abhilashkrishn

Personally, I've not used a sub 400W PSU since 2000. ATI Recommends powersupply of 400w with these cards. Also their websites shows TDP of HD5450 is 19W. Then why it needs 400W? I don't know, but one of you guys can explain me before I ran into buying those.

As per your reply I visited the site you said and checked my system with HD 6670. It is showing that minimum PSU wattage it will use is 189W and Recommended PSU Wattage should be 239W. I have a SMPS with 300W now, can I go ahead with the plan of buying HD 6670? Or it will burn my system? Can I trust the value given by the power calculator site?

Im planning for Graphics update of my PC. My PC having 300W Powersupply now. I can buy maximum 360W SMPS for this. Which Graphics card need to select from these? ATI Radeon HD 5450, HD 5670 and HD 6670 Also please guide me which powersupply can I select for this Graphics Card : 300W or 360W (not more than that as my UPS not support more!) My system configuration is as list as below: Intel DG41TY Motherboard Intel Pentium Dual Core E5200 2.5GHz 2 x 2GB DDR2 RAM PC2 6400 800MHz Seagate 500GB SATA2 HDD 7200RPM Seagate 1TB SATA2 HDD 7200RPM LG DVD+RW 300W SMPS USB Mouse PS/2 Keyboard 18.5" Wide DELL LCD Monitor 1366*768 Res V-Guard SLENDER PLUS 600VA UPS