Single Rail PSU Solves CrossFire ( & SLI) Problems

Omega65Omega65 Philadelphia, Pa
edited February 2006 in Science & Tech
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

Comments

  • lemonlimelemonlime Canada Member
    edited February 2006
    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.
  • Omega65Omega65 Philadelphia, Pa
    edited February 2006
    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
  • madmatmadmat
    edited February 2006
    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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