Don't do it! SLI is a headache, a lot of faff with sometimes zero improvements over a single card (and even the occasional performance hit! :confused:).

And while only having 3.5GB of full-speed VRAM isn't much of an issue for single-card 970 users, you will find your cards thrashing against the limit in SLI, as they'll both be sharing a single 3.5GB+0.5GB pool.

Sell your old 970 for ~£150 and with the £188 for this, you're on £338 already - just £22 more gets you a GTX 1070, which has a huge performance boost across all games without depending on SLI support, and also uses even less power than a single 970.

Worth it for SLI, and if you can't drop the extra cash on a 1060. Nice find.

Don't do it! SLI is a headache, a lot of faff with sometimes zero improvements over a single card (and even the occasional performance hit! :confused:).

And while only having 3.5GB of full-speed VRAM isn't much of an issue for single-card 970 users, you will find your cards thrashing against the limit in SLI, as they'll both be sharing a single 3.5GB+0.5GB pool.

Sell your old 970 for ~£150 and with the £188 for this, you're on £338 already - just £22 more gets you a GTX 1070, which has a huge performance boost across all games without depending on SLI support, and also uses even less power than a single 970.

Yeah, was reading some benchmarks yesterday where out of 16 modern games, only 6 games supported SLI/Crossfire. :-(

sli with the gtx970 is fine with many games and it does also use full 4gb vram without any issues at all. The slightly slower +512mb does not give any issues at all . These people saying rubbish do need to change their cpu for a better one. 970 sli needs a good push from a good cpu. Also, for the sli to work well, settings should be as high as possible and usage of higher resolutions will also help a lot, that is what it is for an sli after all. At 1080p or lower and low settings the sli is worse than using 1 gpu and in most of the games, saying so the better the cpu the better the push
Anyway, I got a 970 sli. My suggestion is, go for the gtx1060 if you need a single gpu

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All of that doesn't change the fact the game needs to support it and not many do

Good find. Thanks OP!

list these not too many please but tested by you. Might be your pc that might not support it. Many do insist to run the older 500 fiat engine in a Lambo body thinking to get the same performance of a real lambo, that is the main problem why a powerful sli like the 970 cannot work well in many games. Also as I previously mentioned it work best on the higher settings and higher resolutions as it uses less cpu power, try to believe. DSR on a 1080p monitor can make the trick for a proper testing

Having dropped my second 970 in the last few months, bar bench marking I notice no real difference at all in any games I play performance wise @ 1080P which is all I play at. Never changed any settings of the games I already had installed and the performance is in no way degraded from a playability standpoint - maybe I am dropping a few frames, but it's nothing noticeable.
There are games that get a considerable boost from SLI - Tomb Raider springs to mind from reviews I read a while back which gets you nearly twice the FPS over a single card, but you are still way above 60FPS on a single card anyway...