Overclocking

In past reviews, we have discussed the importance of overclock test results - even if you never overclock. Everything about a board's quality comes together in these results, as it takes outstanding stability, great parts, and a good design to withstand the heat and stress of overclocking. This should matter to you even if you don't overclock, since it will tell you a great deal about a board's stability at stock speeds and the potential for a long board life.

Overclocking

Overclocking

We have seen a number of really good overclockers for Socket 939 in the past year, but we are tremendously impressed with the overclocking abilities of ATI's Reference board. 245 Clock Frequency at stock multiplier is the highest overclock that we have ever seen with this reference processor, matching the performance of the Sapphire PURE Innovation, which is based on the single GPU version of the same Radeon Xpress200 chipset. Reaching 245 when the best boards that we have tested did 238 and 240 is a strong indication of excellent voltage stability under stress in the ATI Crossfire AMD.

315 at lower multipliers is the second best performance we have ever achieved, exceeded only by the legendary DFI nForce4 SLI board. This places the ATI Crossfire AMD in the company of the few excellent overclocking Athlon 64 boards that have managed to reach a stable 50% or better frequency overclock at lower ratios.

ATI has made tremendous progress in board design since we looked at the initial Bullhead board last November. This Crossfire AMD seems the culmination of those efforts, with the best AMD chipset performance that we have ever tested. Earlier Grouper and Jaguar single-CPU boards have also likely benefited from AMD's continued improvement of Crossfire family boards. We hope ATI is also able to apply this design excellence to the ATI Crossfire Intel board.

General Performance and Encoding Disk Controller Performance
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  • Starcraftfreak - Friday, September 30, 2005 - link

    So you are saying, the Board supports the dividers for DDR500 also on a Revision C core? I can remember when you published an article explaining it's a new feature of Revision E. Please clarify.
  • SLI - Wednesday, September 28, 2005 - link

    Everything I have seen thus far on the ATI chipset points to the FSB dropping to DDR333 *IF* you populate all 4 DIMM slots (with DDR400 RAM) This was an issue at the CPU level with AMD Athalon on board memory controller (at first) but has been addressed with the newer steppings. VIA and Nvidia chipsets have support for DDR400 with all 4 slots populated. This is a very important aspect to me and it needs to be addressed.
  • Wesley Fink - Wednesday, September 28, 2005 - link

    It was addressed in tRAS and Memory Stress Tests in the review - p.5. We had no trouble with 4 dimms at DDR400, though we did have to drop to 2T with 4 dimms as we do on every other AMD chipset. This is more a function of the on-CPU memory controller.
  • sxr7171 - Wednesday, September 28, 2005 - link

    I don't get it. We switched to SATA to get worse performance? SATA performed worse than IDE in every single benchmark.
  • Scarceas - Tuesday, September 27, 2005 - link

    I'd like to know what happens when you try two 6800s in a crossfire motherboard...

    I'm also curious about what happens why you try crossfire graphics cards on an NF4 SLI motherboard...

    Early on I heard rumors that the motherboard implementation would be similar between the two and that mixing motherboard/graphics manufacturers *might* be possible...

    Now the hardware is showing up and no one has tried it?
  • vailr - Tuesday, September 27, 2005 - link

    Check: page 11 "Ethernet Performance" has format errors:
    http://www.anandtech.com/cpuchipsets/showdoc.aspx?...">http://www.anandtech.com/cpuchipsets/showdoc.aspx?...
    Copied & pasted:
    It will almost always be <em>much</em> lower than what we have measured.<br /> <br /> </span> </div> <div class="adcontainer"></div> <table border="0" width="100%"> <tr> <td align="right" colspan="2"> <table border="0" cellpadding="0" cellspacing="0"> <tr> <td><strong><a href="showdoc.aspx?i=2542&amp;p=12" class="smalllink">Audio
  • tanekaha - Wednesday, September 28, 2005 - link

    Ethernet page has same problem as b4 here
    I`m using firefox latest beta and the browser considers the page done after this line.

    Ntttcpr - m 4,0,


    I guess u use a template for these reviews I had exactly the same prob with ( and commented similarly ) with I think the asrock dual article.
    I guess not many others are getting this prob but I`m glad 2 see some! else has a prob and not just me.
    What browser are u using ?
    Wesley have u tried 2 view the article with firefox beta ? or even firefox ?
  • Wesley Fink - Thursday, September 29, 2005 - link

    Articles are created in a document engine by our Web Editor, from basic information layouts we send the Web Editor. The engine generates HTML code. We don't individually generate the code for articles. Any problems with viewing the pages should be emailed to our webmaster Jason.Clark@anandtech.com
  • tanekaha - Thursday, September 29, 2005 - link

    Thanks for the replies gents
    I am not using any blockers or extentions .. apart from FF default pop up blocker.
    I will mail jason with the facts (as I see them)
    I`ll also send the info to the FF team
    THX again
    tanekaha
  • JarredWalton - Wednesday, September 28, 2005 - link

    If you're using any extensions to block ads or other content, you might want to try disabling those. I've been using Firefox for over a year now, and I don't have any issues with the pages. (Some pages render improperly the first time and I need to hit refresh, but that's generally only on long pages, and it seems more of a FF bug than anything.)

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