600 Watts enough for 7870 crossfire?

I'm thinking of getting another 7870 to crossfire but I don't my PSU is good enough. Its a Corsair CX 600. PC part picker estimates around 584 watts but can that number be trusted also would i be able to overclock?

PCPartPicker part list / Price breakdown by merchant / Benchmarks

CPU: AMD FX-8350 4.0GHz 8-Core Processor ($209.00 @ Canada Computers)
CPU Cooler: Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler ($33.66 @ DirectCanada)
Motherboard: Asus M5A99FX PRO R2.0 ATX AM3+ Motherboard ($160.51 @ Vuugo)
Memory: Kingston HyperX Blu 8GB (2 x 4GB) DDR3-1333 Memory ($102.83 @ Vuugo)
Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive ($69.99 @ Canada Computers)
Video Card: Sapphire Radeon HD 7870 GHz Edition 2GB Video Card (2-Way CrossFire) ($304.88 @ Amazon Canada)
Video Card: Sapphire Radeon HD 7870 GHz Edition 2GB Video Card (2-Way CrossFire) ($304.88 @ Amazon Canada)
Case: Fractal Design Define R4 (Arctic White) ATX Mid Tower Case ($112.98 @ Memory Express)
Power Supply: Corsair CX 600W 80+ Bronze Certified Semi-Modular ATX Power Supply ($79.99 @ Canada Computers)
Optical Drive: Asus DRW-24B1ST/BLK/B/AS DVD/CD Writer ($22.03 @ Vuugo)
Monitor: Asus VS247H-P 23.6" Monitor ($179.00 @ Canada Computers)
Total: $1579.75
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2014-04-15 08:48 EDT-0400)
1 answer Last reply Best Answer
More about 600 watts 7870 crossfire
  1. Best answer
    Going from memory the 7870 is a 175w part. So two should be somewhere around 350W. The 8350 is a 125W CPU. That's 475W total. Total draw should be around 525W. The CX600 is rated for 552W on the 12V rail. So you have BARELY enough for stock settings, OC would be a no. Because you are so close to the limit of the PSU I wouldn't do it. If you want to CF the 7870, I'd get a bigger PSU.
Ask a new question

Read More

Overclocking Crossfire Corsair Graphics