Sufficient PSU for SLI?

xlinesh

Honorable
Apr 24, 2012
3
0
10,510
Hey guys,

I am currently using a gtx 560 ti and im hoping to add another to run 2 way sli soon. i am currently using a Inwin Commander II 750W psu, and according to my knowledge i know this should be sufficient, but then i came across somewhere on this forum that my psu needs to have a combined +12 Volt continuous current rating of 44 Amps or greater.

According to my psu specs (http://www.techpowerup.com/reviews/InWin/IRP-COM750W-II/2.html) the +12v channel only has a current rating of 32amps... so now i am confused... would i have to upgrade my PSU as well if i add another gpu?

Here are my exact pc specs:

Intel i7 2600 @3.4Ghz
Asus Sabertooth P67
Asus Geforce GTX560ti Direct CU II Top
Corsair Vengeance 8GB 1600Mhz CL9
INWIN Mana 134 Casing + INWIN 750w Commander II
CoolerMaster Sickleflow 120mm x6, CoolerMaster XtraFlow 120mmx 1
Seagate 1TB 7200 rpm, 24x Asus DVD RW

i was planning on adding either the same Asus card or a gigabyte card.

thanks in advance.
 
Your PSU has (4) 12V rails that are rated at 32A each that can provide a total of 648W...or a maximum 54A across all the 12V rails. Your PSU with 54A on the 12V rails and (4) 6+2 pin PCIe power connectors is sufficient to power your planned upgrade to (2) GTX560ti in SLI.
 

xlinesh

Honorable
Apr 24, 2012
3
0
10,510


Thank you very much for clarifying that. :)



Yes, i bought this PSU coz it was alot cheaper than a Corsair or a Coolermaster 750 (tight budget u see:p) so this was kinda expected, but as long it works with my future upgrade its all good. ty.