Solved

Trying to figure out optimal VRAM configurations for SLI at high resolutions (5760*1080)

I'm planning to step up from my GTX 660 Ti SLI setup to increase performance with my Nvidia Surround setup (5760*1080). I'm looking at replacing them with either, in favorable order:

1. GTX 780 Ti
2. GTX 770 SLI 4GB or 2GB
3. GTX 770 3-way SLI 4GB or 2GB
4. GTX 780 SLI

My question is, how does the memory bandwidth of a card affect performance with varying sets of memory capacities?

Eg:
Does 3GB @384-bit on a GTX 780 beat 4GB @256-bit on a GTX 770 at 5760*1080, and at what resolutions do each make sense?

Here's a list of memory configurations to help me make sense of it all if anyone can clarify it:
384-bit@3GB, SLI & non-SLI @ 5670*1080 (abbreviated to NvS for Nvidia Surround), 1440p, 1080p
256-bit@4GB, SLI & non-SLI @ Nvs, 1440, 1080
256-bit@2GB, SLI & non-SLI @ NvS, 1440, 1080


TLDR; Trying to balance memory bandwidth vs capacity such as 384-bit@3GB vs 256-bit@4GB at higher resolutions, and whether or not SLI will have bottleneck issues due to memory bandwidth.
3 answers Last reply Best Answer
More about figure optimal vram configurations sli high resolutions 5760 1080
  1. the bandwidth isn't as important as total vram. I'd think that 3gb on the 780ti would be enough.
  2. woltej1 said:
    the bandwidth isn't as important as total vram. I'd think that 3gb on the 780ti would be enough.


    Can you clarify as to why more VRAM is more beneficial to high-resolution gaming compared to a wider bus?

    Essentially, would 256-bit@4GB be better for higher resolution rendering compared to 384-bit@3GB, and what would either increase or lower performance based on those two factors?
  3. Best answer
    you won't saturate the bandwidth gaming at 256 bit or 384, but higher resolution requires more than 2gb now, probably 3 a couple years down the road.
Ask a new question

Read More

Capacity Graphics Nvidia Surround Bandwidth SLI Memory VRAM Bottleneck