SLI working

[335th_GRAthos]

Originally Posted by ingsoc84

I've heard that two cards does not essentially give you twice the vram of the sinle card,

Correct, I have two GTX570 cards, but my VRAM is 1,3Gb (only).

Originally Posted by ingsoc84

..so is it the case that one card opertaing at 2.1vram or higher will always be better fps than say two 570's?

Yes under conditions: if insufficient VRAM is the bottleneck then, the card with more VRAM will perform better.
Which is the bottleneck in the case of CoD (among other things...)
My point is that today, the GTX580 with 3Gb VRAM is the card to buy (and not the smaller version with 1,5Gb "only").
My personal opinion posted many times is that even the GTX580 is not good enough for the game and we have to wait for two generations of GPUs to see real performance...

Originally Posted by ingsoc84

How are your frame rates with the two 570? I run original textures, grass off..forests low, buildings low, land shades low, fps is improving with these adjustments, but I'd like to see them consistenly 50=60....another question, would I get much of a benefit from increasing my cpu from say 3.3 to 3.5, or is the gpu really the key here?

Screenshots with fps, with/without SLI, GPU1 & GPU2 %utilisation look at page1

From what I have read in various forums it seems that higher CPU speed helps, never saw hard evidence though. Personal opinion, if you know how to and it is easy, you should do it (within reason). I increased my i7 from 2.9GHz to 3.6GHz it probably made a little difference.

Looking at your HDD model and the available RAM you have, I would recommend you invest your time on something else:

Originally Posted by 335th_GRAthos

Without RAMDRIVE, sound was there, no problems at all.
HOWEVER I noticed significant difference in performance: I got some 0,5sec stutters, happened at the most critical moment every time, dogfighting, mostly when a Bf109 was coming from high above at high speed and I turned my head to the sky to track it. I presume it is the speed that the system needs to load the textures of the new object.

So definitively I will stick to my RAMDRIVE (especialy since I have a slow (normal) hard disk and no SSD).
Personally, after this experience, I consider the money to add another 6Gb RAM (and make RAMDRIVE) better invested than money to spent on an SSD.
I will post it at the RAMDRIVE thread, too.

~S~