Does this power supply meet these graphic cards requirements?

Piecrust2 · Apr 22, 2014

Hi, I have a question for my future build,

Will a Corsair ax 860 have the right pci-e connectors for 2 EVGA gtx 780s (in sli)?

PSU:

http://www.newegg.com/Product/Product.aspx?Item=N82E16817139044

GPUs:

http://www.newegg.com/Product/Product.aspx?Item=N82E16814130918

Please let me know guys, thanks!

Suztera · Apr 22, 2014

yes. It will be fine.

Piecrust2 · Apr 22, 2014

Suztera :

Are you sure the pc-e connectors included with the psu will be enough for two gtx 780s?

Suztera · Apr 22, 2014

Piecrust2 :

I believe it has 6 6+2 pin connectors. Each card takes 2 8 pin connectors

numanator · Apr 22, 2014

Yes, it will work perfectly. The Ax860 comes with 6 x 6+2 pin connectors, each 780 should require either 2 8 pin (6+2) or 1 8 pin and 1 6 pin for a total of 4 out of the 6 being used.

Beezy · Apr 22, 2014

heres a review from the newegg page, it would appear this person was able to run 2 780s (although at a high power draw he mentions) this could depend and vary widely on the rest of the components though in his and your rig.

v\This review is from: CORSAIR AX series AX860 860W ATX12V / EPS12V SLI Ready CrossFire Ready 80 PLUS PLATINUM Certified Full Modular Active PFC Power Supply New 4th Gen CPU Certified Haswell Ready
Pros: The power supply has been performing flawlessly and i actually hear the large 120 mm fans on the top of my case more than the the powersupply.

Cons: The only problem is that i didn't anticipate how much power draw there would be with two 780 gtxs that are water cooled. I thought I would be around the 860 watt mark with a pump, 6 fans, two 780 gtx sli, a ssd, and two hdds. It runs fine until i hit a taxing game while overclocked. Causes my system to reboot immediately. This is my fault for not anticipating the power draw.

Piecrust2 · Apr 22, 2014

Ok thanks guys, I was really really worried that it wouldn't, just wanted to make sure. Thanks for the info ^^

Piecrust2 · Apr 22, 2014

Beezy :

hmm, so are you implying that 860 watts wouldn't be enough? The only other component I have that is overclocked would be the cpu, would that cause a problem?

If you're curious here's the rest of my whole build:
cpu: i7 4770k (overclocked to around 4.0 to 4.3 ghz)
cpu cooler: Cooler Master Hyper 212
gpu: 2 EVGA gtx 780s
motherboard: ASUS Maximus Hero VI
psu: Corsair ax 860
ram: Corsair Vengeance (2x8gb) LP
a cd/dvd rom (Haven't chose one yet)
hdd: Western Digital 1tb
ssd: Samsung 840 evo 250gb

Beezy · Apr 22, 2014

Piecrust2 :

Beezy :

hmm, so are you implying that 860 watts wouldn't be enough? The only other component I have that is overclocked would be the cpu, would that cause a problem?

If you're curious here's the rest of my whole build:
cpu: i7 4770k (overclocked to around 4.0 to 4.3 ghz)
cpu cooler: Cooler Master Hyper 212
gpu: 2 EVGA gtx 780s
motherboard: ASUS Maximus Hero VI
psu: Corsair ax 860
ram: Corsair Vengeance (2x8gb) LP
a cd/dvd rom (Haven't chose one yet)
hdd: Western Digital 1tb
ssd: Samsung 840 evo 250gb

id say its pushing it kinda close to a concerning load, but not unsafe (and maybe thats just me, i want to be at 50-60% psu load). If you have problems you can consider ditching the DVD drive (extra unneeded power draw, u can install windows from a USB stick and d/l games), also downclock the CPU to stock. the AX series are great units, i think it will handle it fine.

Piecrust2 · Apr 22, 2014

Beezy :

Piecrust2 :

id say its pushing it kinda close to a concerning load, but not unsafe (and maybe thats just me, i want to be at 50-60% psu load). If you have problems you can consider ditching the DVD drive (extra unneeded power draw, u can install windows from a USB stick and d/l games), also downclock the CPU to stock. the AX series are great units, i think it will handle it fine.

Well the main purpose of this build was to be able to upgrade certain things in the future, and I was definitely planning on adding more ssds or hdds to the system, but now I'm concern it won't be able to handle it

Although I could take out the cd drive, I do use it every now and then (for burning cds to my pc and vice versa and installing software and games); so I'm afraid that may be a necessity.

Should just move to a 1200 watt, I know it's kind of drastic for this build but it's the next step up in the ax series and will most definitely be sufficient in powering this build.

numanator · Apr 22, 2014

A few options to consider if you decided to go over your 860w:

Power Supply: XFX ProSeries 1050W 80+ Gold Certified Fully-Modular ATX Power Supply ($198.98 @ Newegg)
Total: $198.98

Power Supply: SeaSonic X Series 1250W 80+ Gold Certified Fully-Modular ATX Power Supply ($268.98 @ SuperBiiz)
Total: $268.98

Beezy · Apr 22, 2014

the AX 1000 unit should be fine if thats around. i would say 1000 quality watts from Seasonic, XFX, or Antec would be best.

Piecrust2 · Apr 22, 2014

Ok cool, thanks for the recommendations, really appreciate it ^^

numanator · Apr 22, 2014

No problem, Seasonic is the brand I trust most for power supplies (they make about 1/2 of the corsair models too) and the XFX are made by seasonic as well so either of them or the AX would be good.

Beezy · Apr 22, 2014

The ax 1200 is a tier one unit really great. It will leave u with enough headroom for overclocking and upgrades and will be great

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