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Old September 12, 2013, 10:36 AM
Join Date: Feb 2013
Posts: 22
Default Need suggestions for Power Supply.

Hi professionals~

I have
Asus Sabertooth Z87


GTX 780

3T HDD& 250G SSD

my case is Corsair HAF X

My current power supply is HX 850

I am going to get a second GTX780 for SLI, do I need to upgrade my power supply? If so, which one should I get? Anything else I need to upgrade for 780sli?

Thank you so much for your time!
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Old September 12, 2013, 10:55 AM
SugarJ's Avatar
Join Date: Jan 2008
Location: Langley, BC
Posts: 6,802

My System Specs


I'd think you're good with your HX850. In SKYMTL's test system with a 6-core SB-E CPU and mobo, the stock 780 draws 406 watts. http://www.hardwarecanucks.com/forum...-review-7.html

Your 4-core Haswell CPU should draw quite a bit less, and unless you're running 2x highly overclocked 780 Classifieds I think you have plenty of power head room.
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Old September 13, 2013, 08:17 AM
FreeKnight's Avatar
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Join Date: Jul 2009
Location: Edmonton, AB
Posts: 1,639

My System Specs


You should be fine. I've got an OC'd 1366 920, 24GN RAM, 3 HDDs, 2SSDs and two SLI'd GTX 780 ACXs and I'm fine still.

Edit: With that same PSU, sorry meant to say that at the start

Last edited by FreeKnight; September 13, 2013 at 08:45 AM.
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Old September 13, 2013, 08:28 AM
Bond007's Avatar
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Join Date: Jun 2009
Location: Nova Scotia
Posts: 4,471

My System Specs


I think you will be ok as well.
Desktop: Arc Midi R2, Z77-D3H, 3570K 1.09v/4.1ghz with Zalman Optima Cooler, Corsair Vengeance 2x4gb@1866mhz, XFX R9 280X DD, Bitfenix Fury 750w, WD Black 1TB, Intel 530 120GB
Away from home light Gamer: Acer Aspire 15.6", A8-3500m undervolt and OC to 2Ghz, 2x4gb Corsair Vengeance, Crucial M500 240gb
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