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There was a review back in September that compared the performance of the 770 in 2 and 4gb versions. I wish I could remember who did it so I could send you a link, but the gist of it was that there was no discernible performance difference between the two when running a single card. This might change if you are talking SLI.
again it wont matter as the 770 will not have the gpu power to run settings that need more than 2gb of vram. spending 50 extra bucks for more vram on the 770 is nothing but a waste and that money should be applied towards just getting a better gpu.Correct. 4GB of VRAM doesn't increase performance, but it allows for high resolution gameplay at 4k or surround with higher MSAA and image quality settings. Since OP is at 1600p, 3/4GB may make sense for gaming a year or two from now. Better to err on the side of caution since he is at 1600p.
Historically it's rather obvious with 8800GT 512MB vs 8800GT 1GB and 6950 1GB vs 2GB that more vram benefits longevity of performance
While don't have a 4K screen yet, running eyefinity on single 6970 2GB proved that vram was the biggest limiting factor.
I'm not expecting the 770 4GB to ever outperform 780 3GB, and and am looking at other cards like 680 4GB, but I fear that a 2GB card is just simply not enough for 2015.
Besides highres screens, my concern is stable min fps for VR (oculus rift) games as well
My primary concern for 780 is the high cost. I haven't spend over $350 on a video card since X800XTX
Historically it's rather obvious with 8800GT 512MB vs 8800GT 1GB and 6950 1GB vs 2GB that more vram benefits longevity of performance
While don't have a 4K screen yet, running eyefinity on single 6970 2GB proved that vram was the biggest limiting factor.
I'm not expecting the 770 4GB to ever outperform 780 3GB, and and am looking at other cards like 680 4GB, but I fear that a 2GB card is just simply not enough for 2015.
Besides highres screens, my concern is stable min fps for VR (oculus rift) games as well
My primary concern for 780 is the high cost. I haven't spend over $350 on a video card since X800XTX
7950
The reference 780/Titan/690 cooler is not loud. It's a significantly better reference design than anything else on the market. I was downright shocked at how whisper quiet it was, after having used AMD reference shrouds for some time.