"1050W BLACK EDITION PRO 80 PLUS GOLD MODULAR POWER SUPPLY - BLACK"
XFX's unique, continuous EasyRail technology enables you to maximize available power and make setup easy. Stack numerous power-hungry components, such as your GPU, CPU and other components, without fear of crashing. It's also a perfect solution for hardcore gamers. Multi-rail PSUs are safe and often preferred, but it's just not equipped to handle the power-hungry components of today's gaming systems--especially if it's a multi-GPU or multi-CPU setup. Multi-Rail PSUs breakdown power bands into smaller, individual rails so it's possible for over-current and system shutdowns to occur. What's needed is one, big, reliable rail for all of your components. For real high-power gaming needs, XFX EasyRail is the only choice.
SolidLink technology allows XFX PSUs to drastically reduce the wires inside. Other PSUs have numerous wired internal components, which generate heat, wasting energy and decreasing efficiency. SolidLink Technology replaces traditional wired connections with direct pin to port connections. This reduces heat generated by wires which in turn reduces lost wattage giving you clean, consistent high quality voltage.
Traditional Full Modular PSUs tend to have a bundle of cables which generate heat causing wattage loss. This means the PSU has to actually pull in more wattage to make up for the loss to give you the wattage your computer needs. SolidLink Full Modular PSUs don't have all these primary wires, instead using pin lag that directly connect to the connector daughter board which drastically reduces the lost wattage--meaning you'll draw less wall power which saves you money
FEATURES
- 80Plus Gold Certified
- Crossfire and SLI Ready
- Haswell Ready
- EasyRail Plus Technology
- Hybrid Fan Control Modes
- Compatible with Intel Core i3, i5, i7 and AMD Phenom, FX
- DC to DC Converter Design
- Conductive Polymer Aluminum Solid Electrolytic Capacitors
- Active Power Factor Correction [99% PF Typical]
- High +12V Output
- Ultra Ventilation [Grid Structure]
- Multi-GPU Technologies Supported
- All-in-One DC Cabling Design
- Universal AC Input [Full Range]
- 5 Year Limited Warranty
SPECIFICATIONS
- +12V Rail Outputs : Multi-rail
- ATX12V 2.2 & ESP12V 2.91 Compliant : Yes
- Maximum Wattage (W) : 1050W
- Modular Cables : Yes
- Performance Category : Black
- AC Input Current (Arms) : 13-6.5 (Maximum)
- AC Input Frequency (Hz) : 47-63
- AC Input Voltage (Vac) : 90-264
- Active Power Factor Correction (PFC) : Yes
- DC to DC Converters (+3.3 & +5V) : Yes
- EZ Grip Connectors : Yes
- High Reliable 105°C Japanese Capacitors : Yes
- Solid State Capacitors : Yes
- Tight voltage regulation (±5%) : Yes
- OCP/OPP/OTP/OVP/SCP/UVP Protections: Yes
- Cooling Fan Size (mm) : 135
- Intake Fan: Airflow (CFM/min) : 94.8
- Intake Fan: Diameter (mm) : 135 x 135 x 25 mm
CONNECTORS
- 1 x 20+4-Pin ATX12V/EPS12V
- 1 x 8-Pin EPS12V
- 1 x 4+4-Pin ATX12V/EPS12V
- 6 x 6+2-Pin-PCIe
- 11 x SATA
- 8 x 4-Pin-Molex
- 2 x Floppy
- Warranty: 5yr
Top comments
Agharta
9 Jan 164#12
Most people with a single NVidia card and an Intel CPU will struggle to hit even 300W. At that level you are better off with a smaller 80 Plus Platinum PSU efficiency and heat wise.
An 80 Plus Platinum PSU will give you a minimum of 90% efficiency between 20 and 100% load. You aren’t going to generally notice any significant difference between that and a higher wattage Gold rated PSU running at its optimum wattage range giving it a 92% efficiency. In many cases it will be less efficient. A difference of 2% either way is fairly negligible. The overall design of the PSU is much more important and don’t forget that the 80 Plus ratings are a minimum so a good design can beat that.
I think I have debunked that idea above. Buy an appropriately rated PSU for your systems wattage and your efficiency preference as well as all the other important metrics.
madh4tt3r
9 Jan 163#11
great deal. those who wonder why would you ever need such a big wattage PSU?
Here are the reasons:
- 80+ gold rating which means that it has to have a 90% efficiency at half load. So for those of us that tend to just run a single graphics card we should never really go above around 500 - 600W at most which means that even though you not using its full potential you are actually making a cost saving compared to a 600W 80 gold which wont have the same efficiency
- When you have a lower wattage PSU it will run at closer to maximum potential while gaming and if you do it for long periods it will heat up the PSU for being under more stress than one that is at half load. So this affects 2 things - heat in the case and the hotter each other part gets the lessens the life span. They still last long enough to become outdated but still is a factor compared to the higher wattage one.
Overall if you have the money, I would always recommend going as high as you can even if you never use it.
meherenow
9 Jan 163#7
£10.50 postage, goodness me!
All comments (36)
New2Deals
8 Jan 16#1
Hot from me, lowest I've ever seen this PSU.
rojo66
8 Jan 161#2
The internals of this power supply are made by Seasonic.
Is that good? or Bad? or just informational? (I think it's the last as it's very factual statement :smile:)... # edit: Just read your link and it looks like Seasonic is a good manufacturer.
About the PSU... I drool thinking what kind of PC needs 1050W (3 way sli?).
Excellent deal. However the new GPUs coming out in the summer won't need much power but if your looking for a replacement psu this is awesome.
rojo66 to elrasho
8 Jan 16#6
Indeed...But most people that will buy a power supply like this will also be overclocking there system. So it's always nice to have that extra headroom.
xenononon
8 Jan 16#5
So tempting
meherenow
9 Jan 163#7
£10.50 postage, goodness me!
neoboy
9 Jan 161#8
All the cool kids get it for free.
rojo66 to neoboy
9 Jan 16#10
Indeed, If you are a forum member and meet the requirements. Package and posting is free.
great deal. those who wonder why would you ever need such a big wattage PSU?
Here are the reasons:
- 80+ gold rating which means that it has to have a 90% efficiency at half load. So for those of us that tend to just run a single graphics card we should never really go above around 500 - 600W at most which means that even though you not using its full potential you are actually making a cost saving compared to a 600W 80 gold which wont have the same efficiency
- When you have a lower wattage PSU it will run at closer to maximum potential while gaming and if you do it for long periods it will heat up the PSU for being under more stress than one that is at half load. So this affects 2 things - heat in the case and the hotter each other part gets the lessens the life span. They still last long enough to become outdated but still is a factor compared to the higher wattage one.
Overall if you have the money, I would always recommend going as high as you can even if you never use it.
Agharta
9 Jan 164#12
Most people with a single NVidia card and an Intel CPU will struggle to hit even 300W. At that level you are better off with a smaller 80 Plus Platinum PSU efficiency and heat wise.
An 80 Plus Platinum PSU will give you a minimum of 90% efficiency between 20 and 100% load. You aren’t going to generally notice any significant difference between that and a higher wattage Gold rated PSU running at its optimum wattage range giving it a 92% efficiency. In many cases it will be less efficient. A difference of 2% either way is fairly negligible. The overall design of the PSU is much more important and don’t forget that the 80 Plus ratings are a minimum so a good design can beat that.
I think I have debunked that idea above. Buy an appropriately rated PSU for your systems wattage and your efficiency preference as well as all the other important metrics.
noss88
9 Jan 16#13
Who use need 1000 watt ;d? I got 32gb ram 4790k ,DVD RW , blu ray RW , 2 Ssd , 970gtx g1 and 650 watt corsair rma and sometimes is using 300-370 watt i can easly go sli 970 that is Max for this but still.... Its only for ati crossfire users
And gold and platinium not mean only power losing in % Its mean how good PSU genneraly is with everything
xenononon to noss88
9 Jan 16#14
People who are using AMD GPUs in crossfire is one example. Power hungry beasts.
neroneuk to noss88
9 Jan 16#17
Why do I wanna a Lambo?? I just want it, lol
ollie87
9 Jan 161#15
Unless they are R9 Nanos.
Snubbs
9 Jan 16#16
I've had this PSU for about 2 years now. cracking price! it doesn't suffer from the coil whine I've found common in Corsair PSUs.
great PSU.
weltysparrow
9 Jan 16#18
I'd always leave some headroom because a PSU, if it's of good quality, tends to outlast your current build by at least one or two builds, maybe even three builds. The standard never changes so any ATX PSU will be compatible well into the future. If you bought a good PSU before SATA was available you'd still be able to use it with simple molex adapters.
If you build something a bit lightweight now (3-400 watts consumption using a 500 watt PSU for example) you may find in a couple of years you want something more powerful. Eg. if going from a 750 ti and dual core i3 CPU to a 290x and quad core with overclocking you'd have to buy a new PSU as the old one doesn't cut it. All of those parts could have been put in the same system and would be an easy upgrade.
Generally the price difference between 500 and 700 watts is negligible compared to what you might save by not having to upgrade it down the line. Obviously this particular PSU would be massive overkill for that situation but I've been using the same power supply for many years. It has never given me trouble and has never needed upgrading despite increasing power usage needs.
Agharta
9 Jan 161#19
I didn't say not to but focussed on the excessive and incorrect ideas put forward by one person.
A 700W Platinum PSU usually makes more sense than a 1KW Gold PSU is the crux of what I was saying and that leaves much headroom for most.
If you are in the tiny minority that would consider running dual 300W GPUs then hopefully you buy an appropriate PSU.
With GPUs finally moving to 1x nm processes this year power consumption will come down anyway not up so all that headroom of a 1Kw PSU becomes even more pointless for most.
rev6
9 Jan 16#20
That doesn't mean high-end GPU's won't require a similar PSU compared with today, it just means they'll be more powerful with a similar power consumption.
Kulaak
9 Jan 16#21
Just read that review. Sounds & looks impressive but that is the Platinum model.
rojo66
9 Jan 16#22
I agree with what you say. It's always best to invest that bit extra in a good quality power supply and give your self some room to upgrade if needed. My corsair 1000w has seen seen me through 3 upgrades so far.
It's about 6 years old now.
I guess the main point here isn't about it being such a high wattage, as you can pay more than this for a lesser wattage power supply.
So I'm really not sure why people are debating about it being a waste and to high a wattage.
rojo66
9 Jan 16#23
There will be differences in quality. But gold rated is still of very high quality. And internals are Seasonic as already pointed out.
madh4tt3r
9 Jan 16#24
I appreciate your comments, its good to have some feedback from all sorts for everyone to make their own judgements. Of Course what I said in my post is only just scratching the surface of choosing the correct PSU and there is a lot more to it than just wattage, in fact wattage usually means nothing and the bits that I mentioned are fairly negligible between like you say a 700W PSU and this 1050W PSU if just running a single gfx card especially in recent years with the power consumption of current parts.
In saying what I did I thought more in the context of the deal rather than going into the full details about choosing the correct PSU. As for my comment of going as high as you can, it might not be as relevant now a days but it certainly was a factor several years ago, I might have to rethink that statement but in the context of this deal, If you go look for a seasonic based 700W PSU that is platinum rated you would be hard pressed to find one for the same price range as this is currently at and like you said the difference of 2% either way is fairly negligible so for the price of this deal and the actual performance of the PSU makes it a very good deal.
£27.00 more than this offer. For a 750w Seasonic gold rated power supply. I'm sure I wouldn't pay more for less.
buckiebull
9 Jan 16#26
I have a Corsair HX1000i PSU running away in my Cooler Master Elite 120 quite fine but as this is a full size psu there is hardly any space and air flow is a big problem but i'm just awaiting the arrival of a Corsair Obsidian as there is more airflow and it will be a new build (Skylake)
on that note this psu is silent even under full load and i'm running an i5 and a R90x in it although it doesn't fit the case as to why i'm getting the new case!
Agharta
9 Jan 16#27
It's hard to say as nVidia have kept consumption lower even on 28nm so it is possible that AMD may choose to do the same at 1xnm. My point was that there is much more likely to be downward movement than upward so less need to over provision than ever.
rev6
9 Jan 16#28
There's no doubt that the next lot of high-end GPU's will use less power/per watt. Say they're 2x the performance per watt compared to the previous generations equivalent yet 2x as powerful... You know what I mean? I guess we'll have to wait and see.
Agharta
9 Jan 16#29
In the recent past AMD have often had to use much higher wattages for GPUs and CPUs to stay competitive. How this pans out at 1xnm is unknown and it will depend also on how they compete relative to each other.
Agharta
9 Jan 16#30
Scan do the Seasonic Platinum 660W for £115 and there are other well reviewed Platinum models in the 650 to 850W under £130.
With a system that pulls 300W at the wall (AC) which is not unusual for an Intel/nVidia combo that equates to ~270W DC. So even with a 650W PSU you are only just above the 40% load level which is okay as the optimal range efficiency wise is seemingly 40 to 50% load.
With a 1,050W Gold PSU with a 270W DC load you are in the ~26% load range. A good one will still be close to 90% efficiency even at that load level so the difference in efficiency might be only 3 or 4%. That’s not a lot in terms of overall wattage saved but it’s quite a lot in terms of the amount of heat that the PSU is generating internally:
300W at 89% = 33W of waste heat generated in the PSU; 11% of 300W.
300W at 93% = 21W; 7% of 300W.
So the Gold rated PSU is creating 12W or 57% more heat than the Platinum one in this example which is probably worst case.
With a 3% difference that comes to:
300W at 89% = 33W.
300W at 92% = 24W.
So the Gold rated PSU is creating 9W or 38% more heat than the Platinum.
A 38 to 57% difference in heat production for a PSU located in a bottom chamber of a case can have an impact on how fast its fan needs to spin and therefore how noisy it is.
A Platinum 750W can run a system that pulls 400W at the wall and be in the 40 - 50% load range.
Note: DC is what PSUs are rated for not AC which is what review sites usually quote when giving overall system power consumption as they measure output at the wall socket which is AC. So that gives you an extra ~10% headroom without many people even realising.
nomnomnomnom
9 Jan 16#31
To put into perspective how little systems are drawing today, a Intel Core i7-4960X @ 4.2GHz pared with 4*8GB sticks of RAM and a 970GTX draws 300 Watt at the wall. This means the system actually uses even less, as you lose some efficiency in the PSU itself.
I'd like a bit more headroom myself, but not much more.
So if you're running an average gaming rig, say an i5 with 8GB of RAM and a 960GTX, you're lucky to even hit 250 Watt.
The number of people who need a PSU of this size are miniscule and fringe cases.
frish
9 Jan 16#32
It's a good deal. I'll repeat that the amount of people that need a 1kw psu is small. People greatly overestimate what is needed. The most important thing is the quality/make of the PSU, so no generic brands if you want anything reliable. You generally want to go slightly over what is needed, but a good psu will output the stated wattage compared to generics that may not even supply the stated wattage. 1kw is extremely overkill, however if you feel it's worth the cost go for it. It's just that with continuing trends of power saving and the fact that most even high end systems don't need 1kw means that it may be more suited to step down to something smaller. I don't see those trends changing since portability is becoming more popular where power efficiency is important. It won't do any harm of course.
NIckJH
9 Jan 161#33
It has been said in other ways, but if you read any of the PSU group tests on computing sites or magazines, efficiency drops of quite markedly when PSU's are used at less than 20% of rated output. I built my own home server and it runs 24/7. It has on-board graphics, dual NICs, one 3.5" disk and one 5" 2GB disk and a Core i3 processor. It runs typically at around 30w measured at the mains socket so after taking into account the PSU efficiency. To use a 1Kw PSU running at 3% load would be madness. I use a 120w PicoPSU and even that is a bit of overkill, but is needed as the system boots up. Any system with on-board graphics needs next to nothing so even something like the BeQuiet 300w PSU's are OTT and it is hard to find any conventional PSU with a sensible efficiency rating and lower power. My newer desktop PS's use around 20-25w at the plug and my older one 60w. Really the PSU must be right-sized and bigger is often worse!
Kulaak
9 Jan 16#34
I agree with most of what you say. Although efficiency does drop of sharply at low loads it's not as bad as it appears. Generally for a 750w PSU you can get around 82 to 87% efficiency depending on your chosen model for a low range of power between 40 & 100 watts. As you say tho' using something like a 1kW pSU @ 3% load is just madness. I can't imagine why people would.
EDIT: It appears this is now a discontinued model so maybe a stock clearance.
NIckJH
9 Jan 16#35
This is the great thing about percentages. If efficiency drops from 80% to 60% at your power usage and you are only drawing 30w at the socket, then at 60% efficiency you are losing 12w compared to losing 6w at 80%. Although it is a drop in efficiency of 20%, you're only talking about 6w extra loss. Less than an energy saving 60w bulb which is peanuts and a relatively small cost even at 24/7 running.
![Fresh Breakfast Meat Box (Using code) @ Campbells Meat [Haggis / Lorne Sausage / Bacon / Black Pudding & More]](/images/topics/208684_1.jpg)
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Opening post
XFX's unique, continuous EasyRail technology enables you to maximize available power and make setup easy. Stack numerous power-hungry components, such as your GPU, CPU and other components, without fear of crashing. It's also a perfect solution for hardcore gamers. Multi-rail PSUs are safe and often preferred, but it's just not equipped to handle the power-hungry components of today's gaming systems--especially if it's a multi-GPU or multi-CPU setup. Multi-Rail PSUs breakdown power bands into smaller, individual rails so it's possible for over-current and system shutdowns to occur. What's needed is one, big, reliable rail for all of your components. For real high-power gaming needs, XFX EasyRail is the only choice.
SolidLink technology allows XFX PSUs to drastically reduce the wires inside. Other PSUs have numerous wired internal components, which generate heat, wasting energy and decreasing efficiency. SolidLink Technology replaces traditional wired connections with direct pin to port connections. This reduces heat generated by wires which in turn reduces lost wattage giving you clean, consistent high quality voltage.
Traditional Full Modular PSUs tend to have a bundle of cables which generate heat causing wattage loss. This means the PSU has to actually pull in more wattage to make up for the loss to give you the wattage your computer needs. SolidLink Full Modular PSUs don't have all these primary wires, instead using pin lag that directly connect to the connector daughter board which drastically reduces the lost wattage--meaning you'll draw less wall power which saves you money
FEATURES
- 80Plus Gold Certified
- Crossfire and SLI Ready
- Haswell Ready
- EasyRail Plus Technology
- Hybrid Fan Control Modes
- Compatible with Intel Core i3, i5, i7 and AMD Phenom, FX
- DC to DC Converter Design
- Conductive Polymer Aluminum Solid Electrolytic Capacitors
- Active Power Factor Correction [99% PF Typical]
- High +12V Output
- Ultra Ventilation [Grid Structure]
- Multi-GPU Technologies Supported
- All-in-One DC Cabling Design
- Universal AC Input [Full Range]
- 5 Year Limited Warranty
SPECIFICATIONS
- +12V Rail Outputs : Multi-rail
- ATX12V 2.2 & ESP12V 2.91 Compliant : Yes
- Maximum Wattage (W) : 1050W
- Modular Cables : Yes
- Performance Category : Black
- AC Input Current (Arms) : 13-6.5 (Maximum)
- AC Input Frequency (Hz) : 47-63
- AC Input Voltage (Vac) : 90-264
- Active Power Factor Correction (PFC) : Yes
- DC to DC Converters (+3.3 & +5V) : Yes
- EZ Grip Connectors : Yes
- High Reliable 105°C Japanese Capacitors : Yes
- Solid State Capacitors : Yes
- Tight voltage regulation (±5%) : Yes
- OCP/OPP/OTP/OVP/SCP/UVP Protections: Yes
- Cooling Fan Size (mm) : 135
- Intake Fan: Airflow (CFM/min) : 94.8
- Intake Fan: Diameter (mm) : 135 x 135 x 25 mm
CONNECTORS
- 1 x 20+4-Pin ATX12V/EPS12V
- 1 x 8-Pin EPS12V
- 1 x 4+4-Pin ATX12V/EPS12V
- 6 x 6+2-Pin-PCIe
- 11 x SATA
- 8 x 4-Pin-Molex
- 2 x Floppy
- Warranty: 5yr
Top comments
An 80 Plus Platinum PSU will give you a minimum of 90% efficiency between 20 and 100% load. You aren’t going to generally notice any significant difference between that and a higher wattage Gold rated PSU running at its optimum wattage range giving it a 92% efficiency. In many cases it will be less efficient. A difference of 2% either way is fairly negligible. The overall design of the PSU is much more important and don’t forget that the 80 Plus ratings are a minimum so a good design can beat that.
I think I have debunked that idea above. Buy an appropriately rated PSU for your systems wattage and your efficiency preference as well as all the other important metrics.
Here are the reasons:
- 80+ gold rating which means that it has to have a 90% efficiency at half load. So for those of us that tend to just run a single graphics card we should never really go above around 500 - 600W at most which means that even though you not using its full potential you are actually making a cost saving compared to a 600W 80 gold which wont have the same efficiency
- When you have a lower wattage PSU it will run at closer to maximum potential while gaming and if you do it for long periods it will heat up the PSU for being under more stress than one that is at half load. So this affects 2 things - heat in the case and the hotter each other part gets the lessens the life span. They still last long enough to become outdated but still is a factor compared to the higher wattage one.
Overall if you have the money, I would always recommend going as high as you can even if you never use it.
All comments (36)
http://whirlpool.net.au/wiki/psu_manufacturers
About the PSU... I drool thinking what kind of PC needs 1050W (3 way sli?).
Mandatory link for a U$S30K (family :smiley:) gaming PC: https://www.youtube.com/watch?v=LXOaCkbt4lI
Here are the reasons:
- 80+ gold rating which means that it has to have a 90% efficiency at half load. So for those of us that tend to just run a single graphics card we should never really go above around 500 - 600W at most which means that even though you not using its full potential you are actually making a cost saving compared to a 600W 80 gold which wont have the same efficiency
- When you have a lower wattage PSU it will run at closer to maximum potential while gaming and if you do it for long periods it will heat up the PSU for being under more stress than one that is at half load. So this affects 2 things - heat in the case and the hotter each other part gets the lessens the life span. They still last long enough to become outdated but still is a factor compared to the higher wattage one.
Overall if you have the money, I would always recommend going as high as you can even if you never use it.
An 80 Plus Platinum PSU will give you a minimum of 90% efficiency between 20 and 100% load. You aren’t going to generally notice any significant difference between that and a higher wattage Gold rated PSU running at its optimum wattage range giving it a 92% efficiency. In many cases it will be less efficient. A difference of 2% either way is fairly negligible. The overall design of the PSU is much more important and don’t forget that the 80 Plus ratings are a minimum so a good design can beat that.
I think I have debunked that idea above. Buy an appropriately rated PSU for your systems wattage and your efficiency preference as well as all the other important metrics.
And gold and platinium not mean only power losing in % Its mean how good PSU genneraly is with everything
great PSU.
If you build something a bit lightweight now (3-400 watts consumption using a 500 watt PSU for example) you may find in a couple of years you want something more powerful. Eg. if going from a 750 ti and dual core i3 CPU to a 290x and quad core with overclocking you'd have to buy a new PSU as the old one doesn't cut it. All of those parts could have been put in the same system and would be an easy upgrade.
Generally the price difference between 500 and 700 watts is negligible compared to what you might save by not having to upgrade it down the line. Obviously this particular PSU would be massive overkill for that situation but I've been using the same power supply for many years. It has never given me trouble and has never needed upgrading despite increasing power usage needs.
A 700W Platinum PSU usually makes more sense than a 1KW Gold PSU is the crux of what I was saying and that leaves much headroom for most.
If you are in the tiny minority that would consider running dual 300W GPUs then hopefully you buy an appropriate PSU.
With GPUs finally moving to 1x nm processes this year power consumption will come down anyway not up so all that headroom of a 1Kw PSU becomes even more pointless for most.
It's about 6 years old now.
I guess the main point here isn't about it being such a high wattage, as you can pay more than this for a lesser wattage power supply.
So I'm really not sure why people are debating about it being a waste and to high a wattage.
In saying what I did I thought more in the context of the deal rather than going into the full details about choosing the correct PSU. As for my comment of going as high as you can, it might not be as relevant now a days but it certainly was a factor several years ago, I might have to rethink that statement but in the context of this deal, If you go look for a seasonic based 700W PSU that is platinum rated you would be hard pressed to find one for the same price range as this is currently at and like you said the difference of 2% either way is fairly negligible so for the price of this deal and the actual performance of the PSU makes it a very good deal.
£27.00 more than this offer. For a 750w Seasonic gold rated power supply. I'm sure I wouldn't pay more for less.
on that note this psu is silent even under full load and i'm running an i5 and a R90x in it although it doesn't fit the case as to why i'm getting the new case!
With a system that pulls 300W at the wall (AC) which is not unusual for an Intel/nVidia combo that equates to ~270W DC. So even with a 650W PSU you are only just above the 40% load level which is okay as the optimal range efficiency wise is seemingly 40 to 50% load.
With a 1,050W Gold PSU with a 270W DC load you are in the ~26% load range. A good one will still be close to 90% efficiency even at that load level so the difference in efficiency might be only 3 or 4%. That’s not a lot in terms of overall wattage saved but it’s quite a lot in terms of the amount of heat that the PSU is generating internally:
300W at 89% = 33W of waste heat generated in the PSU; 11% of 300W.
300W at 93% = 21W; 7% of 300W.
So the Gold rated PSU is creating 12W or 57% more heat than the Platinum one in this example which is probably worst case.
With a 3% difference that comes to:
300W at 89% = 33W.
300W at 92% = 24W.
So the Gold rated PSU is creating 9W or 38% more heat than the Platinum.
A 38 to 57% difference in heat production for a PSU located in a bottom chamber of a case can have an impact on how fast its fan needs to spin and therefore how noisy it is.
A Platinum 750W can run a system that pulls 400W at the wall and be in the 40 - 50% load range.
Note: DC is what PSUs are rated for not AC which is what review sites usually quote when giving overall system power consumption as they measure output at the wall socket which is AC. So that gives you an extra ~10% headroom without many people even realising.
I'd like a bit more headroom myself, but not much more.
So if you're running an average gaming rig, say an i5 with 8GB of RAM and a 960GTX, you're lucky to even hit 250 Watt.
The number of people who need a PSU of this size are miniscule and fringe cases.
EDIT: It appears this is now a discontinued model so maybe a stock clearance.