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PSU Rating and AMD CrossfireX

Tags:
  • Power Supplies
  • Intel
  • Power
  • Graphics
  • AMD
  • ATI
  • Hard Drives
  • External Hard Drive
  • Radeon
Last response: in Graphics & Displays
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August 1, 2014 1:06:36 PM

Hello there.
I have a 600W PSU from LC Power.
It is the LC600H-12 V2.31 model.
It has 2 rails of 20A so i guess 20A+20A=40A ?
Also I'm thinking to crossfire R9 270 with this PSU. I have one MSI R9 270 and planing on getting another one. So what do you think? Will it work?
The PSU has all the connectors that I need (1x 6 pin & 1x 6+2 pin)
My other specs are:
FX 6300 (stock speed), 4 GB RAM (getting 16), 500GB HDD.
Here is the picture of the side of PSU: http://www.tomshw.it/forum/attachments/gaming/70367d137...
With my calculations it should work but i just wanna ask you to be shure.
CPU max= 150W maybe
1 GPU max= 170W, so 2 GPUs= 340W or 350W
and HDD and fans maybe 20W ?? :D 
Total = 520W ? :D 

More about : psu rating amd crossfirex

Best solution

a b ) Power supply
August 1, 2014 1:46:29 PM

If you're going to crossfire, you're going to want at least 700W-750W. See this: http://www.guru3d.com/articles-pages/amd-radeon-r9-270-...

I don't know about the quality level of your current PSU, but according to spec it will handle a single 270. I wouldn't recommend crossfiring 270s though - it's not worth it. Better to save up and upgrade to a better single card, or at least a better card for the first half of your crossfire. I would recommend getting a PSU from Tier 3 or higher from the list below.
1-5 Power Supply Tier List
Credit to dottorrent. Original thread: See full content
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