Two 7950's in SLI : How much power will I need?

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dylandylandylan

75 posts

Master Geek

#114469 20-Feb-2013 17:46

I'm planning on running two asus 7950's in SLI
I was wondering how much power I will need to run them?

My rig as is follows,
asrock extreme 4
intel i5-3570k
2 3tb WD drives
OCZ vertex 4 SSD
CX750M Corsair PSU
16gb/32gb RAM. >haven't decided yet.

Let me know, thanks.

~Dylan

~Dylan

tukapa1

753 posts

Ultimate Geek
+1 received by user: 235

#766794 21-Feb-2013 06:56

http://www.extreme.outervision.com/psucalculatorlite.jsp

dylandylandylan

75 posts

Master Geek

#766801 21-Feb-2013 07:48

Thanks for that tool, it's really handy, I'm going to bookmark it! came out at 476w, so I should be all right!

~Dylan

joutei

308 posts

Ultimate Geek
+1 received by user: 9

#766807 21-Feb-2013 08:28

dylandylandylan: Thanks for that tool, it's really handy, I'm going to bookmark it! came out at 476w, so I should be all right!

Its only a guide , I would recommend have an excess of 100 - 150 Watts just incase

TechSol

300 posts

Ultimate Geek
+1 received by user: 30

Technical Solutions Aust

#766849 21-Feb-2013 09:33

dylandylandylan: Thanks for that tool, it's really handy, I'm going to bookmark it! came out at 476w, so I should be all right!

seems a little low to be honest.... I would definitely go higher for the headroom (no point in running a PSU to the brink)

So the 750watt PSU you mentioned should be fine

Oblivian

7345 posts

Uber Geek
+1 received by user: 2117

ID Verified

#766857 21-Feb-2013 09:55

I recently had to replace my nice modular highpower due to sudden death :(

But found the new ATX standards and the better PSUs certifications now all have their rating as the minimum constant output and not a ZOMGDIE@MAX rating.

That is my 550 (purchased on similar calculator 475 recomendation and my old busted fan 425 enermax working just fine as an interim replacement) is 550 with burst output of up to 650