Single Rail PSU Solves CrossFire ( & SLI) Problems

Omega65 (Omega65) According to The Inquirer switching to a single rail PSU can solve some problems you might have running dual video cards.

February 28, 2006 8:11 AM ET in News

According to The Inquirer switching to a single rail PSU can solve some problems you might have running dual video cards.

ATI key motherboard designer John Bruno told us that a single rail PSU is better than a multi rail PSU. He reported that ATI had some issues with multi rail PSUs while all of the single rail 500 W + PSUs were running fine. It turns out that both OCZ Power stream 600 W PSU and Akasa 650W PSU are using more than one power rails.

We got a nice link where one of the top overclocker, our good friend Sampsa had the same problem with 600W multi rail PSU and A8R-MVP board and two X1900 cards in Crossfire. He solved its troubles by switching to a single rail 560W PSU. You can check the post here.

Well, Well, Well

Source: The Inquirer

3 Comments:

  1. lemonlime
    28 Feb '06, 2:28 pm

    Yep, I've been a big advocate of hefty single rail PSUs for quite some time. I dislike having the amperage split across weaker rails. It is sometimes difficult to judge exactly where the heft of the draw will be.

  2. Omega65
    28 Feb '06, 4:25 pm

    PC Power & Cooling latest Monster PSU The Turbo Cool 1K Has 3 12v Rails, 1 36A and 2 16A Rails

    Of course you can dual boot 2 Sparkle Power FSP550-60PLG 550watts +12v@36A (if you have the space) and achieve the same thing at 40% of the price

  3. madmat
    28 Feb '06, 6:32 pm

    The trouble is that UL (I think it's UL) won't certify a PSU with over 25A on the 12V rail so that makes many PSU mfg's shy away from offering PSUs that can't be certified.

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