[QUESTION] running SLI with GTX580

[rampin]

hi guys have a question i would like to run SLI with my GTX580 i have the black ops edition which is shown here

<linked removed as may get in trouble>


i would also like to get this to run the SLI as i cant seems to find the other blacks ops card anywhere i think they might of stopped selling it is it possible to use the normal evga card which i have linked below????

http://www.overclockers.co.uk/showproduct.php?prodid=GX-149-EA&groupid=701&catid=1914&subcat=1812

also i think i may have to upgrade my power supply for this how many watts do you guys think i need thank you.

im assuming that its just the fan that they have changed on the front of card with the black ops logo

 

[Duff-Man]

Any GTX580 should work fine with your existing card. Your PSU should be sufficient to run the setup, although you'll be running at fairly close to capacity if you're planning to overclock.

 

[rampin]

my cpu is already overclocked i dont really intend to overclocking the GPU i have it running at stock.

 

[Mariusz]

I would take the link down could be classed as a competitor.
You can sli any two brands of gtx 580's together, just make sure they have the same amount of RAM.
If going sli and the cards are close together on your motherboard you will be better off with reference design cards that exhaust hot air out the back of case.
Regarding your PSU, Anandtech claim 850 watts of total system power usage in furmark so you may need to upgrade.

 

[Duff-Man]

Regarding your PSU, Anandtech claim 850 watts of total system power usage in furmark so you may need to upgrade.

That's an "at the wall" measure. The actual power draw will be 850W * PSU efficiency, which will be around 80-85% for a good quality PSU. So around 700W power draw.

Also, Furmark is subject to power-throttling on the GTX580 (implemented by Nvidia because it draws so much more power than 'real world' applications). I assume that anandtech found a way to disable this in order to get the 850W furmark power draw. During the original review, the highest power draw they were able to pull from an SLI 580 setup was 777W (see here), by running furmark in conjunction with a second program. Again, that's an "at the wall" number, so around 640W draw.

 

[rampin]

thanks for this table has helped a lot