HD 6770 power usage

[SandmanII]

Hello,
I am going to get a Sapphire Radeon HD 6770 (PCI-e, 1 GB GDDR5, HDMI, VGA, 1 GPU).
I have a Core 2 6600 2.4, 2 Mb RAM and a PSU of 450W. Is it enough? Thanks!

 

[AMD X6850]

Do you have the brand + model of the PSU?

450W is enough to power a 6770 but some PSU companies aren't too honest when it comes to wattage.
They can mark something which is actually 350W but then sell it off as a 450 etc. stuff like that. The shadier brands of course.
And it also depends on how the 450W are distributed between the rails.
The brand + model should solve all of this.

 

[SandmanII]

Here are the details: LEVICOM VP450B.BL
Thank you.

 

[AMD X6850]

LEVICOM PLC VP450B.Bl 450 W
Performance:
+3.3 V: 26A
+5.0 V: 28A
+12.0 V: 30A
-5 V: 0.3A
-12 V: 0.8A
+5 Vsb: 2.0A

You should be OK with 30A on the 12V rail (360W).

I checked a few sites out and they say that 25A+ is good for a 6770. The actual peak total system power draw of a 6770 is 110W according to Tom's benchmarks but not sure how accurate those are for real world application.
And I don't know how much overhead there is, so be cautious if you plan on overclocking.

Other than that, you are good to go. That PSU is fine.

 

[SandmanII]

Thanks for your help.