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PSU enough for 460 SLI and i7 950 OCed?

Last response: in Components
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August 31, 2010 8:29:23 PM

Please let me know if you think this power supply is enough for this SLI build and if not, please give me a recommendation. Also, I plan to overclock the CPU and GPUs. I will probably shoot for taking the i7 950 to either 3.8 or 4.0. Thanks for your comments in advance.


CORSAIR HX Series CMPSU-850HX 850W ATX12V 2.3 / EPS12V 2.91 80 PLUS SILVER Certified Modular Active PFC Power Supply


http://www.newegg.com/Product/Prod [...] 6817139011


2 X GIGABYTE GV-N460OC-1GI GeForce GTX 460 (Fermi) 1GB 256-bit GDDR5 PCI Express 2.0 x16 HDCP Ready SLI Support Video Card

http://www.newegg.com/Product/Prod [...] 6814125333

Intel Core i7-950 Bloomfield 3.06GHz 4 x 256KB L2 Cache 8MB L3 Cache LGA 1366 130W Quad-Core Processor BX80601950

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Crucial RealSSD C300 CTFDDAC128MAG-1G1 2.5" 128GB SATA III MLC Internal Solid State Drive (SSD)

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

CORSAIR DOMINATOR 6GB (3 x 2GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Triple Channel Kit Desktop Memory

http://www.newegg.com/Product/Prod [...] 6820145224

MSI Big Bang-XPower LGA 1366 Intel X58 SATA 6Gb/s USB 3.0 ATX Intel Motherboard

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

ZALMAN CNPS9900ALED 120mm 2 Ball Low-noise Blue LED CPU Cooler

http://www.newegg.com/Product/Prod [...] 6835118046

Antec P193 Gunmetal Gray Aluminum / Steel / Plastic ATX Mid Tower Computer Case

http://www.newegg.com/Product/Prod [...] 6811129062

SAMSUNG Spinpoint F3 HD103SJ 1TB 7200 RPM 32MB Cache SATA 3.0Gb/s 3.5" Internal Hard Drive -Bare Drive

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

LITE-ON Black 8X BD-ROM 16X DVD-ROM 48X CD-ROM SATA Internal Blu-ray Disc Combo Model iHES208-08 LightScribe Support

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Dell UltraSharp U2410 Monitor - $499.99

http://www.dell.com/us/en/dfo/peri [...] 2410&s=dfo

More about : psu 460 sli 950 oced

a b ) Power supply
August 31, 2010 8:37:40 PM

Yes, not only that, you probably have another 100-150 watt overhead. So you can even overclock with no worries!
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August 31, 2010 8:39:29 PM

Thanks for the fast response and I'm glad to hear I have some extra capacity.
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a b ) Power supply
August 31, 2010 10:02:23 PM

No problem at all. Yours is a high quality unit. You made a great buy. Don't worry.
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September 1, 2010 3:11:20 PM

No problems dude.That PSU is one of the best around and has enough juice for a GTX 460 SLI.
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a c 248 ) Power supply
September 1, 2010 4:04:30 PM

+1 what the others said.

Corsair is a brand that has a reputation for high quality power supplies that consistently earn high marks in technical reviews. They are reliable, stable, and come with a 5 year warranty. Some of the newer models come with a 7 year warranty.
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September 1, 2010 4:59:47 PM

How much does overclocking impact the power requirements? I mentioned overclocking my i7 950 to ~4.0 in my initial thread. It sounds like the 850 is plenty of power but I'm just curious how overclocking may impact the overall power consumption (if at all). Also, if I am within 100 watts or so of maxing out the power supply will it run louder and hotter. If I had more overhead room would it run quieter?

Thanks
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Best solution

a c 144 ) Power supply
September 1, 2010 5:18:16 PM

You will be nowhere near maxing out the PSU. A pair of GTX460's need about 20 amps. The CPU will need about 10 amps. A maximum overclock will increase the power consumption of the overclocked items no more than about 25%. So you are talking about from 30 amps to maybe 38 amps at 12 volts.

I doubt if the rest of the system will use 150 watts.

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a b ) Power supply
September 1, 2010 6:03:51 PM

^+1 Your system probably won't use more than 550-600w loaded. :) 
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September 1, 2010 6:18:29 PM

Best answer selected by jsimpso55.
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