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ASUS Radeon HD 5870 Overclocks to 1525 MHz

This forum post over on Xtreme Systems claims that community members Elmor and Kinc managed to overclock an ASUS EAH5870 MATRIX Radeon HD 5870 card (2GB) to a crazy-fast core speed of 1525 MHz (core), making a 70-percent speed jump over the default core speed of 894 MHz (850 MHz for the reference card).

The memory overclock wasn't quite as spectacular, cranked up to 1300 MHz, showing a rather pleasant 8.3-percent increase. The overall process remained quite stable at the 1500 MHz point, proven with the use of 3DMark Vantage and scoring P29342 points at the performance reset.

The duo kept the overclocked card cool by using liquid-nitrogen evaporators. The bench also featured an Intel Core i7 980X Extreme Edition six-core processor clocked at 4492.9 MHz, an ASUS Rampage III Extreme motherboard, 6GB of Corsair Dominator GTX DDR3 memory, and an Antec 1200W power supply.

The forum post displays all the validating credentials such as the bench, 3DMark Vantage screens, and CPU-Z screens. "Around 1525-1550/1325-1350 should be possible with more time on this one," the post claimed.

  • RazberyBandit
    Nice OC, but with LN2, I'm not really surprised. Now if somehow they did this on air, I'd be shocked!
    Reply
  • jacobdrj
    Interesting. Still wish there was headroom with air.
    Reply
  • septentriones
    I wonder if you could build large passive heat-sinks to replace the stock fan. I you had them sticking out into the empty space in your case it should cool better right? I wonder if you could buy them or cut some out of aluminum.
    Reply
  • jerreece
    I was impressed by this initially. Then I realized it had to be using LN2. At which point I decided it wasn't very exciting.
    Reply
  • drowned
    Meh the Phenom II goes up to 6ghz on liquid helium, but sucks against intel when overclocked on air. So forgive me if I don't get excited for something that 99.999% of people won't be doing and therefore doesn't matter.
    Reply
  • daeros
    Why do I get the feeling that everyone over at Nvidia just
    Reply
  • nforce4max
    DaerosWhy do I get the feeling that everyone over at Nvidia just a little?
    I thought I smelled something......

    Reply
  • tacoslave
    I bet it probably still uses less power than a fermi card.
    Reply
  • elel
    septentrionesI wonder if you could build large passive heat-sinks to replace the stock fan. I you had them sticking out into the empty space in your case it should cool better right? I wonder if you could buy them or cut some out of aluminum.The problem is that there is much more material between the heat and 'gone'. Think of this passive heatsink as a broad river with almost no slope, the active as a narrower one with more slope and a shorter distance. The second will get rid of its water (heat) faster than the first.
    Reply
  • septentriones
    elelThe problem is that there is much more material between the heat and 'gone'. Think of this passive heatsink as a broad river with almost no slope, the active as a narrower one with more slope and a shorter distance. The second will get rid of its water (heat) faster than the first.If a large passive block wouldn't work (sorry stupid idea), could you have a ducted series of thin fins extend from the processor and have a dedicated 120 mm or so fan blow over them to the outside? with the greater surface area and a powerful fan I would think more heat could be removed.
    Reply