[Smart Series Owners Club]

I've got a new power supply ( Thermaltake Tr2 RX 750w ) From my old Thermaltake TR2 600w..

The problem is that when i play games , My computer reboot after 1-5 minutes.

I've tested my both video cards one by one ( ATI HD 4890 ) And they arent crashing , It only reboot in crossfire mod.

I tested different cable mod etc etc

The only way it worked in crossfire was to use my 750w on 1 of my card and my 600w on the other video card. The temps of my card was not going over 78 Degree under load which i read and told it was normal.

P.S: My crossfire worked no problem with my 600w , But my cards were clearly needing more power than that. Thats why i bought a 750 W PSU.

So i'm assuming the 750w PSU is a faulty one. Althought , I would like to know everyone's opinion. 

Here are my system specs : 

Q6600 2.4 @ 3.2
4gb DDR2 1066
Ati 4890 crossfire
P5Q Pro Turbo
Thermaltake TR2RX 750w Modular

Thanks in Advance,

Regards,

Mansi Rao(Tekslate)