VRAM Usage - 6970 (2 GB) vs. GTX 580 (1,5 GB) vs. GTX 580 (3 GB)

[Codex]

Originally Posted by Buchon

There a lot of confusion in this thread about how SLI/Crossfire work.

SLI/Crossfire cards and systems dont share VRAM between GPUs.

That's not entirely true. It depends on how the developer has set up the buffers in DirectX. While yes they physically don't share memory, but with DirectX you can map the memory to appear as one huge chunk.

http://msdn.microsoft.com/en-us/libr...=vs.85%29.aspx

[camel24hrs]

Vram makes a huge difference in ROF. (I figure this is the closest sim to COD at the moment) In the ROF setup panel it will tell you how much memory you use as you put in your settings. (And checking with MSI Afterburner it is right on the money) With everything set to max 8x Antializing and 8x Anisotropic and all other sttings to the max level I use 56% of my available vram and that is on a 2 gig geforce 560Ti card. All flights are over land and it is really good graphics in this flight sim. ( I get low 40s to high 50s fps with no shutters by the way). Gogamer has April 18th for my shipment date. I have second day air and I will find out then how it does on a 2 gig card. I am not in any hurry as I only had ROF for a couple of months and have been having a blast with it.

When I did get my card I decided to go with the most Vram that I could get on my series of card.......I figured it could never hurt to have it even if I did not need it. And boy I am glad I got it !!!

[Buchon]

Is true that this game is VRAM demanding but Im playing fine with 1 GB of VRAM.

But i guess that the players with 512 VRAM will have problems, the best way to free up VRAM is shoot down AA.