Kaya ra ba sa Silverstone ST50F-ES 500W for this set-up?

[Pykuhan]

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Posting for a friend. Nag plan siya mag upgrade to Phenom X6 (wa koy idea unsa nga model) nya pair niya with a Radeon HD6950 or HD6870.
Enough na ba ang Silverstone ST50F-ES 500W ani nga set-up? Tanan will be running on stock.

Other Specs
Mobo: MSI880G-E45
RAM: 4GB DDR3(corsair)
HDD: 250GB
Para sa case ventilation kay naa to siya 3 Fans gamit.

[eXpLoDe]

6870 max wattage is 151 watts. so required power supply is 500 watts minimum. recommended 600 watts or higher for xfire set-up.

try use this one. and make sure 100% ang system load na gamiton.
eXtreme Power Supply Calculator

see this one also for gpu comparison of the two motherboards.
Video Card Comparison - GPUReview.com