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1.5 gb and 3gb gtx 580.

NVIDIA officially does not support SLI of cards with different memory size. According to http://www.slizone.com/page/slizone_faq.html:

Can I mix and match graphics cards with different sizes of memory?
No. For example, an XXXGT 512MB cannot be paired with a XXXGT 1GB in an SLI configuration.
Click to expand...

If you install a GTX580 1.5GB and a GTX580 3GB into the same rig, you wouldn't be able to see the SLI option in the driver control panel. However there is a hack to enable the SLI option there, called the Coolbits registry hack, which is a hidden function from NVIDIA. Just follow the steps mentioned in that. You'll only have 1.5GB vram per GPU effective in such way.
 
harmony said:
NVIDIA officially does not support SLI of cards with different memory size. According to http://www.slizone.com/page/slizone_faq.html:



If you install a GTX580 1.5GB and a GTX580 3GB into the same rig, you wouldn't be able to see the SLI option in the driver control panel. However there is a hack to enable the SLI option there, called the Coolbits registry hack, which is a hidden function from NVIDIA. Just follow the steps mentioned in that. You'll only have 1.5GB vram per GPU effective in such way.
Click to expand...

Ok thank you very much.
 
harmony said:
NVIDIA officially does not support SLI of cards with different memory size. According to http://www.slizone.com/page/slizone_faq.html:



If you install a GTX580 1.5GB and a GTX580 3GB into the same rig, you wouldn't be able to see the SLI option in the driver control panel. However there is a hack to enable the SLI option there, called the Coolbits registry hack, which is a hidden function from NVIDIA. Just follow the steps mentioned in that. You'll only have 1.5GB vram per GPU effective in such way.
Click to expand...

Well thats definatly wrong because i have in the past paired a 320Mb 8800GTS with a 640Mb one. They must have changed this very recently. I suspect they changed it to stop people trying to SLI a 768Mb and a 1Gb 460 as they vary on more than just the RAM size.
 
Evga says u can't either, there was a couple of threads over on their forums about it and the tech's said it was not possible, i personally would sell the 1.5Gb and get a pair of 3Gb cards or get another 1.5Gb card and sell em both later and get 3Gb 680's :P
 
Krony said:
Evga says u can't either, there was a couple of threads over on their forums about it and the tech's said it was not possible, i personally would sell the 1.5Gb and get a pair of 3Gb cards or get another 1.5Gb card and sell em both later and get 3Gb 680's :P
Click to expand...

well i just brought 3gb version, it is this one, so my plan is now to sell my 1.5gb vserion and the waterblock as well..

I've got to make a post in the watercooling sections now as i do not know what waterblock will fit this card...
 
The 1.5Gb waterblocks fit the 3GB cards if they are reference, only difference is higher density memory modules, i had a 1.5GB card and have done the same as u really, i bought a pair of 3Gb cards and another Koolance block and then sold the 1.5Gb card with it's reference cooler back on.

Edit: Just noticed the link u posted to the card, not sure who makes blocks that fit on thoes non-reference cards.
 
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