Wattage Calculation Help
- Thread starter fizzyfez
- Start date
Solution
nukemaster
Titan
- Nov 23, 2004
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A quality 550 watt unit should handle that system fine. While you may be able to get by with less, I like to recommend a bit of headroom.
The 7950 has similar gaming power use to the old 5870(impressive for the extra performance). I have had overclocked systems with that video card and saw full loads under 400 watts(at the wall).
Please ensure you are getting a quality power supply with a large portion of its overall power on the 12 volt rails because cheap ones or old designed put more of the power on the less used lower rails(3.3/5)
The 7950 has similar gaming power use to the old 5870(impressive for the extra performance). I have had overclocked systems with that video card and saw full loads under 400 watts(at the wall).
Please ensure you are getting a quality power supply with a large portion of its overall power on the 12 volt rails because cheap ones or old designed put more of the power on the less used lower rails(3.3/5)
Dark Lord of Tech
Retired Moderator
- Aug 18, 2009
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http://www.newegg.com/Product/Product.aspx?Item=N82E16817207013
XFX Core Edition PRO550W (P1-550S-XXB9) 550W ATX12V 2.2 & ESP12V 2.91 SLI Ready CrossFire Ready 80 PLUS BRONZE Certified Active PFC Power Supply
JonnyGuru.com Recommended & KitGuru.com Award Winner
Made by Seasonic.
XFX Core Edition PRO550W (P1-550S-XXB9) 550W ATX12V 2.2 & ESP12V 2.91 SLI Ready CrossFire Ready 80 PLUS BRONZE Certified Active PFC Power Supply
JonnyGuru.com Recommended & KitGuru.com Award Winner
Made by Seasonic.
RetiredChief
Judicious
- Feb 22, 2007
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^ Concur
Not a lover of On-line calculators. Prefer to "Google" a review of GPU and look at what they show for system power - Must users will will be slightly less
Your system should be between 300-> 400 Watts, hence the above recommendations for a 500->550 Watt PSU is correct - Plan on Xfire down stream bump it up to a 650 Watt - Just make sure PSU is a quality PSU as there are some out there that should only be used to prop the door open. SR-71's recommendation is great.
Not a lover of On-line calculators. Prefer to "Google" a review of GPU and look at what they show for system power - Must users will will be slightly less
Your system should be between 300-> 400 Watts, hence the above recommendations for a 500->550 Watt PSU is correct - Plan on Xfire down stream bump it up to a 650 Watt - Just make sure PSU is a quality PSU as there are some out there that should only be used to prop the door open. SR-71's recommendation is great.
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