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Vram

post #1 of 5
Thread Starter 

how does two 560s run this resolution with 1gb of VRAM
i always thought that VRAM wouldn't be shared will the eyefinity set up change that? and if the 1gb is not split in any way will it suffer the quality of the graphics since it can't have all the textures on just one 1gb on enthusiast.?
post #2 of 5
If a game maxes out the vram on your gpu, you can still run it. the vram is not combined, it is mirrored in both CF and SLI. From what i have experienced, running out of vram does not necessarily kill your fps everytime you run out of it. Crysis at enthusiast settings @ 1680x1050 use all of the vram (512mb) on my 9800gtx's. The game would normally use about ~870mb, if i had enough vram from what ive seen. I still get decent fps in the low 40s and sometimes high 30s. If i set the textures to low, and tweak all the everything to reduce memory usage, it doesn't really add much performance. Its not really until you start to add AA that you will see big drops in performance if you don't have the vram. Also, i played nfs: hot pursuit 2010, and it used all of my vram at max settings, but i still got a buttery smooth 60fps (with vsync on).

However, you will experience more stuttering and random fps drops in-game if you have no vram left. crysis uses at least 900mb of vram at 1920x1050 as you can see in this thread http://www.overclock.net/graphics-ca...-you-need.html. The gtx 560's will definately run out of vram at 5760x1080, but still manage to pull 24 fps average as you can see in the corner of the monitor
Edited by Brian123 - 1/26/11 at 5:26pm
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post #3 of 5
Thread Starter 
wait but did he have aa on and also wont u see a lack of as much texture if you run outta vram
post #4 of 5
he didn't have aa on, and if you run out of vram, i believe the gpu will start to use system ram (obviously slower than using its own onboard ram). Sometimes you might also come across a texture thats really blurry, but in my experience is a bit rare.
Edited by Brian123 - 1/26/11 at 8:06pm
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e8400 underclocked @ 1.91ghz evga 780i sli sli 9800gtx+ 4gb corsair ram 800mhz 
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CPUMotherboardGraphicsRAM
e8400 underclocked @ 1.91ghz evga 780i sli sli 9800gtx+ 4gb corsair ram 800mhz 
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seagate 500gb hp w2207h silverstone op750 antec 900 
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post #5 of 5
Thread Starter 
really i never heard that 0o so in that case thats where u see games played where things load as u run
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