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Old 02-29-2012, 02:09 AM   #1
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Exclamation PSU power? Please help!

AMD Phenom II 840, 3.1 ghz
Asus 990FX Mobo
4 Dimms @ 1600mhz, 16GB total
Western Digital 650GB SATA III
A few fans here and there

I'm looking to crossfire two HD 5770s. Ones an XFX, the other Saphire. Both working very well. Both stock. I have a Cooler Master 600W PSU. No 80+ cert...I don't think thats enough. eXtreme PS calculator says I need 530W ish, but I'm getting shut downs, crashes, blue screens...it's not right. Plus, I know my system by itself, no GPUs, runs around 350W and XF 5770s runs around 300W as well. Is this: Newegg.com - CORSAIR Enthusiast Series TX650 V2 650W ATX12V v2.31/ EPS12V v2.92 80 PLUS BRONZE Certified Active PFC High Performance Power Supply enough? Or should I bump up to 700W? I don't wanna totally future proof this thing. But I got the second 5770 to be ready for ME3, and it won't work well if I get blue screens every time I run the game. PLEASE HELP!
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Old 02-29-2012, 05:03 PM   #2
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Default Re: PSU power? Please help!

According to this:

Newegg.com - Recommended Power Supply Calculator.

You want at least 590W. 650-700W should be enough for you and give you a little headroom if you decide to add a second drive.
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Old 02-29-2012, 06:17 PM   #3
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Default Re: PSU power? Please help!

Newegg.com - COOLER MASTER eXtreme Power RS600-PCARE3-US 600W ATX12V V2.3 SLI Ready CrossFire Ready Power Supply

That's what I currently have. 600W. But no 80 Plus certification, 70% efficiency.
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