i didnt know that.
why? please
Basically, at lower res the graphics card is doing far less work than what it is doing at higher resolutions.
If your card is really the bottle neck in your system, the CPU speed may mean very little, and the only thing which really increases your frames per second would be for example overclocking the GPU or adjusting the graphics options.
The CPU becauses more a limiting factor either if you have (for example) a 8800 series card, combined with something like a P4, or a Athlon 64 single core. Then, unless you are playing at very high res (1920x1200 most likely) or with a lot of AA, then your CPU will hold you back - because it can not supply instructions fast enough for your card to draw whatever it needs to.
When a GPU is the limit, and not the CPU, then the opposite happens. The CPU is tapping its foot waiting for your card to draw the new frame.
Limits on GPU is usually caused by not enough ram (so it needs to keep swapping out data on the system memory. Symtoms of this are high FPS but then they drop like a stone, and general stuttering). Not enough GPU speed (the actual core speed on the GPU, overclocking may help - but if its a somewhat old card, and it is facing a task like crysis with AA, it probably won't do to much). And finally memory bandwidth (how fast the ram is clocked, and the actual amount of data that can be thrown down the pipes).
AA in particular is a swine for hogging Memory, on my card (a 8800 GTS 320 MB) I can actually play even unreal3 at 1920x1200, but the second I add AA it dies. The same goes for Oblivion, which with just about everything maxed, at 1920x1200 its mostly 40 + FPS, if I add just 4 AA though, the FPS will plumet to 10 or so.
At the moment though, I am waiting for ATI to release its new cards. Apparently they will be faster than what is out now - and hopefully will be released sometime may this year. Until then my 8800 320MB will do
![Da[]San](/styles/overclockers/avatars/4.png){kind=avatar}
