Radeon 6850/PSU Amps?
By
Father Xmas,
Posted on: 2010-11-06 04:39 in ALL ACCESS Gameplay Technical Issues Bugs
http://www.guru3d.com/article/radeon...review-test/13
Quote:
The 6870 uses less power than the 5870, but these numbers are a pretty good guideline.
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Radeon HD 5870 * The card requires you to have a 500 Watt power supply unit at minimum if you use it in a high-end system. That power supply needs to have (in total accumulated) at least 40 Amps available on the +12 volts rails. Radeon HD 5870 CrossfireX * A second card requires you to add another 188 Watts. You need a 700+ Watt power supply unit if you use it in a high-end system. That power supply needs to have (in total accumulated) at least 55~60 Amps available on the +12 volts rails. |
Well since the question is about the HD 6850 it would be less. The HD 6850 fall between the HD 5850 and the HD 5770, maxing at 127 watts for itself which is about 25-30 watts less than the HD 5850 and 20-25 watts more than the HD 5770 (all at stock clocks).
127 watts is a tad over 10.5 amps at 12 volts. So worse case lets say a Crossfire configuration will use 130 watts and 11 amps at 12 volts more than whatever the single card requirements are.
AMD lists only a 500 watt PSU minimum but no amps at 12 volts requirement, they rarely if ever list an amp value. Checking over at XFX and Sapphire, they both only list the official 500 watt requirement, nothing on amps or Crossfire. MSI doesn't officially list anything at all on power requirements other than the need of a 6-pin PCIe power connector on the product page.
That link you provided HwaRang looks to be in the ballpark, rounded within 50 watts for the Crossfire numbers but I would try to stick with the 500 watts for a single card and probably 30 amps at 12 volts but it depends on your system, CPU wattage, any overclocking of the video card or CPU, etc. Your mileage may vary.
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Thank you for replies. I really appreciate the time you guys spend on answering people's posts.
Also, do to my hours at work, I apologize for not responding quickly.
Take care...
Hey folks,
Hope all is well. Noob here...trying to match Radeon 6850 with a PSU. I am struggling to find Amp information for the Radeon.
Anyone know? I stumbled on a website that says this:
Radeon HD 6850 CrossfireX - 35A and a 600W PSU minimum
Radeon HD 6850 - 25A and a 450W PSU minimum
http://forum-en.msi.com/index.php?topic=104805.0;wap2
Can anyone confirm?
Thanks in advance.