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Enough power??

Last response: in CPUs
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September 5, 2011 5:21:22 PM

Hello,
I just did a order with computer planet.
I ordered:
CPU AMD Phenom II X4 965 (4 x 3.4 GHz) AM3 6MB - Black Edition
Motherboard Asus M5A78L-M/USB3 (AMD 760G) - VGA
Power Supply 450W PSU

With an intention of getting a gtx 460 1024mg graphics card in a month or so.

However, the site has said I need to upgrade my power supply to a 600W fan for an extra £50!
Do I really need that??
Every forum I have read suggests the 965 and 460 are okay with 450W?

Jon

More about : power

a c 190 à CPUs
a c 272 ) Power supply
September 5, 2011 8:10:29 PM

It really depends on what 450W unit it is, all power supplies are not created equal. 80% of a modern units power draw comes off the 12V rails so if its a 450W unit that can only give you 220W on the 12V rail you are going to have problems, if its a good 450W unit that can provide 400W from its 12V rail it would be sufficient so it really depends on which power supply it is, but for the most part very few 450W would be good for running a 460, you really should have gone for a 550-650W unit from the start
a b à CPUs
a b ) Power supply
September 5, 2011 8:30:43 PM

Hunter315 has it correct.

The GTX 460 draws ~160W full load so you'd need a PSU with about 30 amps on the 12V rail. Few 450W PSUs will provide this power @ 50C operating temp except top quality PSUs. A 550W-650W would be a better choice unless you buy a 450W top brand PSU like Seasonic, PC Power and Cooling, etc. that can provide the necessary 30 amps. on the 12v rail(s).

http://www.guru3d.com/article/geforce-gtx-460-review/13
September 5, 2011 9:18:06 PM

Thanks guys, I took the reccommended upgrade, after all I am wanting a Pc I can continue to build on in the future...

Got the 'Corsair 600W (CMPSU-600CX) PSU - Low Noise'

Hope its worth it and its just bumped up my budget lol!
!