Topic: Power Supply PSU Calculator Requirements Comparison (Read 3238 times)

To answer my own question, about 460Watts max with all 3xGPUs running at 100%.

CPU will be pretty idle... GPUs only. Thanks!

You're looking at about 600 watts of usage when everything is running - assuming you're not maxing out the CPU along with everything. A 750w PSU should be sufficient for what you're doing.

Building a new system for about $1000. Using various PSU calculators, I've got a wide range of numbers and am not sure which are accurate. I've got a Kill-A-Watt so I will know for sure once the system is up and running, but for now it's an educated guess. What's your recommendation?

GPU: 3 x SAPPHIRE 100355-1GOCL Radeon HD 7850 1GB 256-bit GDDR5 PCI Express 3.0 x16 HDCP Ready CrossFireX Support Video Card OC Version
PSU: 1 x Corsair Professional Series  HX 850 Watt ATX/EPS Modular 80 PLUS Gold (HX850)
MB: 1 x ASRock MB-970EX4 Socket AM3+/ AMD 970/ AMD Quad CrossFireX& nVidia SLI/ SATA3&USB3.0/ A&GbE/ ATX Motherboard
CPU: 1 x AMD FX-4100 Zambezi 3.6GHz (3.8GHz Turbo) Socket AM3+ 95W Quad-Core Desktop Processor FD4100WMGUSBX
RAM: 1 x Corsair Vengeance 8 GB ( 2 x 4 GB ) DDR3 1600 MHz (PC3 12800) 240-Pin DDR3 Memory Kit for Core i3, i5, i7 and Platforms SDRAM CMZ8GX3M2A1600C9
Case: 1 x LIAN LI PC-7HB Black Aluminum ATX Mid Tower Computer Case
CPU Cooler: 1 x COOLER MASTER Hyper 212 Plus RR-B10-212P-G1 "Heatpipe Direct Contact" Long Life Sleeve 120mm CPU Cooler Compatible with Intel 1366/1155/775 and AMD FM1/FM2/AM3+

http://support.asus.com/powersupply.aspx
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Your Recommended Minimum Power Supply is: 900 Watts

http://www.msi.com/service/power-supply-calculator/
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Your recommended minimum power supply is: 572 Watts

http://images10.newegg.com/BizIntell/tool/psucalc/index.html
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Our recommended PSU Wattage: 735 W

http://www.extreme.outervision.com/PSUEngine
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Recommended PSU Wattage: 447 W

http://www.matthewb.id.au/power/computer_power_consumption_calculator.html
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Power Supply Rating Suggested: 1519 watts

http://www.vbutils.com/powercalc.php
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our power supply rating should be greater than 641 watts.

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