The age old question

wrsj77 · Aug 9, 2013

Will my OCZ ModXstreme Pro 600w be good enough to power a 7950 and the rest of my components? I was really thinking hard about upgrading from the 7850 I have.

idkfa · Aug 9, 2013

Should be enough, AMD is quite power hungry (CPU) but I doubt with a single GPU 600W can't be enough.

125W CPU
200W GPU
+40W Other parts
----------
365W / 0.8
----------
456,25W

Leaves headroom for overclocking.

Any objections?

wrsj77 · Aug 9, 2013

idkfa said:
Should be enough, AMD is quite power hungry (CPU) but I doubt with a single GPU 600W can't be enough.

125W CPU
200W GPU
+40W Other parts
----------
365W / 0.8
----------
456,25W

Leaves headroom for overclocking.

Any objections?

Awesome and thanks for the fast response, I was gonna crossfire this 7850 and buy a higher quality psu but the deal on the 7950 will be to hard to resist.

Bobnova · Aug 9, 2013

idkfa said:
Should be enough, AMD is quite power hungry (CPU) but I doubt with a single GPU 600W can't be enough.

125W CPU
200W GPU
+40W Other parts
----------
365W / 0.8
----------
456,25W

Leaves headroom for overclocking.

Any objections?

Why / 0.8?

idkfa · Aug 10, 2013

Because of the 80% efficiency. I was under the impression a 600W PSU would draw max. 600W off the wall and would deliver 600W * 0.8

Apparently I was wrong

wrsj77 · Aug 10, 2013

idkfa said:
Because of the 80% efficiency. I was under the impression a 600W PSU would draw max. 600W off the wall and would deliver 600W * 0.8

Apparently I was wrong

Well I went ahead and bought it since it was a very good deal $239.00 for a 7950 not too bad.

http://www.newegg.com/Product/Product.aspx?Item=N82E16814161429

Bobnova · Aug 10, 2013

You were close, they're rated on what they can put out, so it'd be 600 / 0.8 = draw at the wall.

ThorV2 · Aug 11, 2013

Should be plenty of power..

NiHaoMike · Aug 11, 2013

Actually, if you make sure the (measured) input power is always less than the PSU rating, the inherent (in)efficiency gives you margin. With really efficient PSUs, you'll probably want more margin than that method gives you.

Bobnova · Aug 11, 2013

lol with a good PSU you don't need to leave a margin.

The age old question

wrsj77

Registered

idkfa

Member

wrsj77

Registered

Bobnova

Senior Member

idkfa

Member

wrsj77

Registered

Bobnova

Senior Member

ThorV2

Member

NiHaoMike

dBa Member

Bobnova

Senior Member

Similar threads