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[Official] nVidia Surround - Page 73

post #721 of 8948
Quote:
Originally Posted by wermad;14876520 
Are you oc'ing your fermis?

nope.. im wwaitng to install my ek waterblocks on sunday.. as the heat problem is really an issue for my cards.. they r the gigabyte ultra durable 3 fan version..

ps. how should i oc my fermi's? to about what clocks?
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post #722 of 8948
Quote:
Originally Posted by steelballrun99 View Post
nope.. im wwaitng to install my ek waterblocks on sunday.. as the heat problem is really an issue for my cards.. they r the gigabyte ultra durable 3 fan version..

ps. how should i oc my fermi's? to about what clocks?
That's really good for stock! Are your fermis clocked @ 772 or do they have a factory overclock?
post #723 of 8948
772.. ( I saw that your cards r 3gb on your sig) sorry but does it mean that 1 card has 3 gb of memory, so 3 in sli would have 9 gb?? Wow
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post #724 of 8948
Quote:
Originally Posted by steelballrun99 View Post
772.. ( I saw that your cards r 3gb on your sig) sorry but does it mean that 1 card has 3 gb of memory, so 3 in sli would have 9 gb?? Wow
each card outputs a frame each, so all the graphics power is used in sync, hence 3gb on each card is only 3gb usable total.
post #725 of 8948
Quote:
Originally Posted by steelballrun99 View Post
772.. ( I saw that your cards r 3gb on your sig) sorry but does it mean that 1 card has 3 gb of memory, so 3 in sli would have 9 gb?? Wow
Total vram is technically is 9gb, but effective vram is 3gb.
post #726 of 8948
so my gtx 580 has 1.5gb.. which means my total vram (effective) would be 1.5gb??
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post #727 of 8948
Quote:
Originally Posted by steelballrun99 View Post
so my gtx 580 has 1.5gb.. which means my total vram (effective) would be 1.5gb??
For one card yes. For sli (ie) its total vram of 3gb but effective 1.5gb. If you sli 3gb, total 6gb but effective is 3gb. Basically effective vram is what each card has on its own.
post #728 of 8948
Thread Starter 
I'm going to put in my sig from now on:

SLI/CrossFire treats VRAM like RAID1 does HDDs. More cards does not mean more VRAM.

Because it's the thing that 90% of people seem to not grasp about SLI/CrossFire. Not helped by the manufacturers obfuscating the situation.
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post #729 of 8948
Quote:
Originally Posted by Paradigm Shifter View Post
I'm going to put in my sig from now on:

SLI/CrossFire treats VRAM like RAID1 does HDDs. More cards does not mean more VRAM.

Because it's the thing that 90% of people seem to not grasp about SLI/CrossFire. Not helped by the manufacturers obfuscating the situation.
The dual gpu cards don't help with this (ie 4gb 6990, 3gb 590, 3gb Mars II, etc) either
post #730 of 8948
Thread Starter 
Quote:
Originally Posted by wermad View Post
The dual gpu cards don't help with this (ie 4gb 6990, 3gb 590, 3gb Mars II, etc) either
Yeah, that's exactly what I meant; the manufacturers sell the dual GPU cards like they have the full amount of VRAM available to each GPU. Which they don't. They should really label the boxes 2x1.5GB or 2x2GB, or whatever, rather than "3GB VRAM! 4GB VRAM!"

But it's marketing, and it'll never change.
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