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Do I need more power??

Last response: in Components
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January 16, 2013 1:50:32 AM

I built my first gaming rig a couple of months ago and wanted to confirm that I had a sufficient enough PSU.

My rig includes:

Corsair HX850
GA-990FXA-UD3
FX-8350
G Skill Trident 16GB 1866 8-9-9-24 33
X2 Sapphire HD7950 stock clocks 925/1250
Cooler Master V8
256 GB Samsung 840 Pro SSD
500GB WD Velociraptor
160GB WD Green
Lite On Blu-ray/Burner
CM Storm Sniper Case /w fans
FANS: x2-200mm, 140mm,120mm,90mm(All with LEDS

I've put in these entries into various PSU calculators including the extreme PSU calculator and they all pretty much say that I'm good.

I just wanted to confirm with you guys that I'm indeed ok with 850 or would it benefit me to upgrade.

Thanks in adavance

More about : power

a c 1196 ) Power supply
January 16, 2013 2:08:34 AM

For a system using two Radeon HD 7950 graphics cards in 2-way CrossFire mode AMD specifies a minimum of a 750 Watt or greater power supply. The power supply should also have a maximum combined +12 Volt continuous current rating of 45 Amps or greater and have at least four 6-pin PCI Express supplementary power connectors.

Total Power Supply Wattage is NOT the crucial factor in power supply selection!!! Total Combined Continuous Power/Current Available on the +12V Rail(s) rated @ 45°C - 50°C ambient temperature, is the most important factor.

Overclocking of the CPU and/or GPU(s) will require an additional increase to the combined +12 Volt continuous current ratings, recommended above, to meet the increase in power required for the overclock. The additional amount required will depend on the magnitude of the overclock you are trying to achieve.

The Corsair HX Series HX850 Power Supply ( SKU# 75-001219 / CP-9020032 ), with its maximum combined +12 Volt continuous current rating of 70 Amps and with six (6+2)-pin PCI Express supplementary power connectors, is more than sufficient to power your system configuration with two Radeon HD 7950 in 2-way CrossFire mode.
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January 16, 2013 12:51:55 PM

ko888 said:
For a system using two Radeon HD 7950 graphics cards in 2-way CrossFire mode AMD specifies a minimum of a 750 Watt or greater power supply. The power supply should also have a maximum combined +12 Volt continuous current rating of 45 Amps or greater and have at least four 6-pin PCI Express supplementary power connectors.

Total Power Supply Wattage is NOT the crucial factor in power supply selection!!! Total Combined Continuous Power/Current Available on the +12V Rail(s) rated @ 45°C - 50°C ambient temperature, is the most important factor.

Overclocking of the CPU and/or GPU(s) will require an additional increase to the combined +12 Volt continuous current ratings, recommended above, to meet the increase in power required for the overclock. The additional amount required will depend on the magnitude of the overclock you are trying to achieve.

The Corsair HX Series HX850 Power Supply ( SKU# 75-001219 / CP-9020032 ), with its maximum combined +12 Volt continuous current rating of 70 Amps and with six (6+2)-pin PCI Express supplementary power connectors, is more than sufficient to power your system configuration with two Radeon HD 7950 in 2-way CrossFire mode.



Thanks a lot for the confirmation. I was hoping all of my previous research wasn't for nothing.
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