is this PSU allright?

andrea888

Honorable
Dec 27, 2013
2
0
10,510
Hi everybody,
I want to assemble a pc with a motherboard Asus B85M-G and a graphics card AMD Radeon HD 6770; my question is: what type of power supply unit this system needs? Is an ATX 12V v2.3 unit suitable?
Does anyone know?

thank you,

andrea
 

jeremyp79

Distinguished
You definitely dont need a 550 watt psu to run such a low end card. A quality 400 watt should be more than enough unless you are going to overclock the cpu and gpu severely. http://extreme.outervision.com/PSUEngine shows about 300w of usage with your gpu(I plugged in "normal" numbers for pretty much everything else, and chose the 4670k as the cpu)
http://www.newegg.com/Product/Product.aspx?Item=N82E16817151074 would be a great one, and is pretty inexpensive.
http://www.newegg.com/Product/Product.aspx?Item=N82E16817139049 would also be a good choice, and is only 30 bucks after rebate.
 

armapker

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May 19, 2012
368
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18,960
1) That graphics card REQUIRES a minimum of 450W

2) 6770 uses about 146W at full load + other components could easily get up to 350W. 430W is awefully close to 350W especially considering that there is no way that PSU with 80 plus BRONZE will output a full 430W, more like 370W and that is cutting it awefully close.
 
I disagree yoyo. Tdp of the 6770 is 108W, Max a haswell processor (we were told it was a b85 MB, therefore haswell) is 84 watts. No overclocking on b85. No way you're getting anywhere near 350 under a synthetic stress test, let alone normal everyday usage. That PSU is fine. Specs on video cards list crazy high wattage requirements to account for the myriad of cheap PSUs that outright lie about their output.
I stand by my recommendation.