i have sapphire 7850 oc and thermaltake ms-i commander include power supply "thermaltake tt-450nl1nh-1" 450w i have no problem with my card but i need to know this power supply good for my card or not ??http://nickhard.com.ar/tienda/images/uploads/Fuentes/thermaltake700w/tt450woem.jpghttp://imgc.classistatic.com/cps/blnc/120727/428r1/4243hf1_20.jpeg
Hi - HEC the oem for that PSU does make some good PSU's. I don't know about this particular one,
but what 4745454b says really does apply, you'd want more +12v amps & 276w(23a x 12v)
for a higher end card & CPU.
If you live in the US, there's great deals right now on quality PSU's.
With that said, the 7850 draws very little power for it's performance, and you'd be ok with your current
PSU if you can't upgrade right now.