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SLI Power Supply

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October 22, 2013 7:43:21 PM


Had an issue with a PSU (Apevia 650W) in my new build (First build).
Recently added an extra GPU and 2 weeks later the PSU died, PC shutdown mid game and the PC wouldn't turn back on. I Removed the GPU and swapped the new (dead) PSU with an old PSU and the PC turned on for a few seconds but turned off again. I figure this to be caused by insufficient power from the old 350watt PSU. I figure everything else is fine aside from the PSU.

My questions:
#1:
I'd like to know how many watts would be sufficient for my build.

#2:
My mobo supports 3 way SLI but there isn't enough space between the bottom mounted PSU and the 3rd PCI-E slot to fit a GPU so I use the top two slots for my GPUs, is this typical or safe? There seems to be adequate room between the two cards for heat dissipation and proper air flow and have not run into any problems minus the previously stated PSU issue.

And I will take my answer off the air, thank you!

Specs:
MSI Z77A-GD65 mobo
Intel Core i7-3770k w/stock HS
16GB (2x8GB) Mushkin Blackline DDR3 1600
2x EVGA GTX760 SC 2GB 256-bit SLI
80GB Corsair Force SSD
1TB 7200RPM Seagate Barracuda HDD
Asus Blu-Ray, DVD+RW,CD+RW combo
4x120mm 1200 RPM casefans
Thermaltake Chaser A31 Case ATX mid

More about : sli power supply

a c 122 ) Power supply
a c 185 U Graphics card
a b Î Nvidia
October 22, 2013 7:53:38 PM


GeForce GTX 760 - On your average system the card requires you to have a 500 Watt power supply unit.
GeForce GTX 760 SLI - On your average system the card requires you to have a 700 Watt power supply unit.

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a c 259 ) Power supply
a c 255 U Graphics card
a c 87 Î Nvidia
October 22, 2013 8:07:37 PM

Apevia power supplies are iffy quality at best and stressing low quality power supplies can kill your entire system so don't try that one again ;) 

As stated above 700-750 watts is what you need. Here is a handy chart for future reference.

http://www.realhardtechx.com/index_archivos/Page362.htm

This is an absolute steal. NCIX has the XFX Pro 750w Black Edition for $91 after rebate. It's made by Seasonic like all XFX power supplies and is a rebadged Seaonic X series. Arguably the best units on the market. 80 Plus Gold certified and full modular.

http://us.ncix.com/products/?usaffiliateid=1000031504&s...

A Seasonic X would cost you $160. This is the same unit internally.
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a c 134 ) Power supply
a c 225 U Graphics card
a c 75 Î Nvidia
October 22, 2013 9:15:27 PM

Anytime ya wanna kno this answer, peek and the manufcatyrers specifications or systems requirements

http://www.geforce.com/hardware/desktop-gpus/geforce-gt...

Quote:
Thermal and Power Specs:
97 C - Maximum GPU Temperature (in C)
170 W - Graphics Card Power (W)
500 W - Minimum Recommended System Power (W)
Two 6-pin - Supplementary Power Connectors


500w for system and 1st GFX card + 170 for 2nd card = 670 watts
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October 23, 2013 1:34:50 AM

That's exactly what I was looking for and then some, thanks a bunch!
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a c 259 ) Power supply
a c 255 U Graphics card
a c 87 Î Nvidia
October 23, 2013 1:53:55 AM

Glad we could help! :) 
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