URGENT New Case. Old PSU. Big Problems haha Anyone Help?

VictorNeedsHelp

Honorable
Dec 16, 2012
2
0
10,510
Hey Guys. i recently (Today) got a new computer case. the CM HSF 912 i Think. and ive been having some issues.

i have a crappy diablotek PSu that came with my old pc.
i got a new 200MM Fan and a 120MM on Side.
And i have a Coolermaster N520.

when i take off my GPU it turns on.
when i put it on the mobo it turns off.

im like 99% Sure its the PSU.
Its 450W Btw And on the 12v Rail is 30Amps.
i have 80 Bucks i might want a smaller fan later.

soo can someone just clarify if its my PSU and Maybe Show me one at tigerdirect i can go and buy tommorrow.

Specs. AMD Phenom x6
8 Gb RAM
500GB HDD
Amd 6850
 

InvalidError

Titan
Moderator

GPU manufacturers' figures are always grossly inflated since manufacturers have no way of knowing the quality of someone's PSU and the rest of their system configuration. Lousy PSUs often fail to reliably deliver even half their rated power, sometimes catastrophically/spectularly so.

The GPU's real-world power requirement is closer to 150W and if you throw in 150W for the rest of the PC, you only need 300W of real continuous power so a high-quality 380-450W PSU would get the job done.

I wish GPU manufacturers would actually publish their card's REAL power requirement instead or alongside their PSU rating recommendation so people who want to size their PSU the right way would have the REAL numbers they need to do so.