I Want The Power!

Aha... I'm not having fun with my all new PC. First of all, it took me ages to figure out that I had to disable a few bios options for it to be stable with SLi (it was written in the manual, but who reads the manual?!). Now that I'm passed that, the system is fine 2D, go 3D though and a few minutes in it turns itself off! No warning, no bleeps nothing, just turns itself off. I've boiled it down to me having a crap PSU. Even though it's 500w, it's from someone called jeantech and they suck. Now I gotta shell out on a bigger, badder psu from antec or something. damn.
I can't blame the psu really... here's what's inside

Abit AN8 SLi-Fatil1ty mobo
Pioneer DVR-109 40x32x16x6x dual layer DVD burner
Samsung 16x48x DVD drive
Mistumi 7 in 1 Floppy + media reader
2x XFX Geforce 6800 Ultras in SLi
Western Digital Raptor 36gig
2x Western Digital Raptors 74gig
AMD 64 Fx-55 (San Diego) Processor

In total there are 3 fans on mobo, 3 on the case, 2 on psu, and 2 on the GPUs (total 11).
I don't think my crappy PSU is keeping up, and rather than blowing up (like my old one did when it didn't take the pressure of doom3), this one just turns off.

I'm gonna order one now, shower, play some resident evil 4, and sleep. STOP