gkay09 :
It would be able to handle the HD 4770...but I doubt it would be able to handel high powered graphic cards like the HD 4890/ 4870...
Could you post more details about that PSU ? And what other PSU options do you have ?
And do you already have that PSU ?
Feature:
◆ Comply with Intel ATX12V V2.2
◆ Dual rails +12V1,+12V2 output
◆ Fan 120mm for excellent thermal control
◆ Super silent with intelligent-thermal fan control technology
◆ 78%+ high efficiency performance
◆ Active PFC with PF up to 0.99
◆ Support Intel/AMD all series processor
◆ 20+4Pin connector for M/B
◆ SATA connector for HDD
◆ MTBF > 65,000 hours at 25℃
◆ EMI: EN55022 Class B
◆ Total output power 450W, Max output power 500W
Specification:
Voltage +3.3V +5V +12Vi/o +12Vcpu -12V +5VSB
Min Current(A) 0.5 0.3 1.0 1.0 0 0
Max Current(A) 22.0 20.0 14.0 16.0 0.3 3.0
Dimension: 150mm*140mm*86mm
Safety: CCC、CB、CE、UL
yes i do already have the power supply gkay09,all i could find on the great wall website was the 2.2 500w..but the one i have is a 550w...maybe it is new and not on the site yet,i got it from ....computeronline.com.au....,thanks for your time gkay09