Will this SLI setup work in my system?

[taylorwallace9]

Hey everyone, I want to go SLI mode with my EVGA GTX 570. I want to get the Asus ENGTX570 but I dont know if that will work. If that does not work with my existing card i will get the same EVGA GTX 570. I also have a corsair HX750w 750Watt PSU, will that be enough for two cards?

 

[mister g]

Different brands work in SLI, you just need newer drivers than Nvidia's 180s. As for the power supply I would suggest something a little more powerful.

 

[taylorwallace9]

I read that 750 watts will be enough, as long as you don't OC the cards which i had no intention of doing

 

[mister g]

I would agree, it's just that a little extra headroom is pretty good in my book, besides it helps the power supply maintain its efficiency if the power draw is between 65-85% of its rated output.

 

[taylorwallace9]

true say, having more is always for comforting and efficient but i dont really feel like buying an 850W

 

[mister g]

Okay stick with what you have. Manufacterer's sometimes sets lofty requirements anyway to cover their asses in case something goes wrong. I was using the 4870 x2 as a metric and AMD recommends a 650W power supply, considering that the 570 is slightly more power hungry and factoring in manufacterer inflation the 750 would handle it.

 

[taylorwallace9]

i did a few power consumption tests on a power calculator and it said i needed at least 681 watts so i think i will continue to use my HX750. But i could get an asus ENGTX 570 a long with my existing EVGA 570? yes or no

 

[mister g]

Go ahead, though 91% load isn't always the best the power supply could sustain it in stride.

 

[taylorwallace9]

hmm well ill look around and consider an 850 watt

 

[mister g]

You could also do 800, it's right at 85% efficiency assuming the load is accurate. You won't have to buy right now it's just something to consider further down the road when you want to SLI two 590s.

 

[taylorwallace9]

800 would be good too but i feel that 850 is more comforting but ill most likely never get a 590. A 570 is good enough for me

 

[mister g]

Good for you, it gives a little more headroom to expand. Personally I wish I didn't go for my 650W when I knew I could never Crossfire nor would I ever surpass 500W.

 

[taylorwallace9]

lol i was going for an 850w at first but thought i didnt need that for only 1 card, should of got it lmao

 

[mister g]

Just future proofing, glad I could help in any way I can; good night.

 

[taylorwallace9]

thanks a lot for the info