Overclocking Comparisons

Maximum overclock data was added to our Performance graphs beginning with the nForce4 SLI roundup earlier this year. The overclocking performance graphs allow a better comparison of the overclocking capabilities of tested boards. For more details on the specific overclocking abilities of a specific board, please refer to the Overclocking and Memory Stress Test section of individual board reviews.

Overclocking

Overclocking - A64 4000+ (Clawhammer)

The overclocking performance of the Asus A8R-MVP was spectacular, reaching 325 at the reduced multiplier, and matching the highest stock overclock of 246 that we have tested with this CPU. Both results are at the top of our overclocking results charts. Considering that the competition at the top includes very expensive boards designed specifically for overclocking, the overclocking performance of the A8R-MVP has to be considered remarkable.

No one, least of all this reviewer, expected this kind of overclocking with this mainstream Asus board. Once in a while, you run across a mainstream or value board that surprises you with its capabilities. This board is one of those surprises. Frankly, the Asus A8R-MVP may be the best thing to happen to ATI's new Crossfire chipsets.

ATI has made tremendous progress in board design since we looked at the initial Bullhead board last November. Asus definitely went their own way in the design of the A8R-MVP, but the simplicity of the board more than likely contributes to the great overclocking that we experienced.

It is very important that users change the default 2T Command Rate to 1T for best performance. Asus ships the A8R-MVP with 2T enabled to satisfy some memory manufacturers. The board has no trouble running 1T with quality memory, but you have to set the 1T Command Rate manually. All overclocking was performed with the Command Rate at 1T and the Command Rate was verified in AMD Tweaker.

Gaming Performance USB and Disk Controller Performance
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  • Wesley Fink - Wednesday, November 23, 2005 - link

    Theoretically nVidia SLI can run on ATI crossfire without much trouble. We have tested hacked drivers that do just this and it appears to work fine. However, until nVidia allows Crossifire board operation in their video drivers it is officially not supported. The same goes for ATI Crossfire on nVidia - ATI has to support it in their drivers. Single video cards are supported on all platforms.

    As for avaialability of X1800XT, our video reviewer received a review sample about 6 weeks ago, but we have not seen another X1800XT from ATI. The X1800XT was to be available for sale November 5. ATI tells us daily there are none available for sampling, but we can expect a unit for motherboard testing "very soon".

  • shabby - Wednesday, November 23, 2005 - link

    Geez if your having this much trouble getting a x1800xt i wonder when you'll recieve the crossfire ones.
  • Schro - Wednesday, November 23, 2005 - link

    Has Asus stated the general availability date of the board? The only vendor that I can find with it listed is ZZF @ $199 for a pre-order, which is certainly not a mainstream price.
  • Wesley Fink - Thursday, November 24, 2005 - link

    I just did a search on Google's Froogle at http://froogle.google.com/froogle?q=A8R-MVP+&b...">http://froogle.google.com/froogle?q=A8R...;btnG=Se.... There are 4 listings for the A8R-MVP - buy.com for $104.99, Computer Brain for $108.21, PC & Stuff for $115.94, and PCSuperDeals for $119.15. These prices are very much in line with what Asus projected - in fact they are even better. A Crossfire motherboard with these features for $105 is a terrific value.
  • Wesley Fink - Wednesday, November 23, 2005 - link

    We confirmed final pricing with Asus yesterday. They told us the board should sell initially in the $115 to $125 range. Obviously a new board, a good review and limited availability drive up the price in capitalism. Asus confirmed last evening the boards have shipped from Taiwan to US e-tailers and should begin appearing for sale Friday or Monday (November 25th or 28th).
  • Live - Wednesday, November 23, 2005 - link

    This board is listed for pre-order from several e-tailers here in Europe at just the price range ASUS is suggesting.
  • Calin - Wednesday, November 23, 2005 - link

    it's nowhere near the $100-$125 suggested by the article... but the price will fall when availability increases
  • OrSin - Wednesday, November 23, 2005 - link

    Poster before me hit it right on the head. My next motherboard will most likely be one of these ATI boards but it seems this was fluck to me. I guess we can wait for other sites to seee if they get similar results.
  • poohbear - Wednesday, November 23, 2005 - link

    excuse me, great review, but when presuming that this board is not a fluke u state:

    "based on the Asus expectations being set very low for this board, and the genuine surprise that Asus expressed when we reported our results, I would venture to say that what we found is not a fluke."

    how are the 2 aforementioned reasons related to it NOT being a fluke? i was a bit confused reading that. if a mobo manufacturer's expectations are low, and then they're surprised, would'nt that mean that this mobo might on the contrary, be a fluke?
  • Wesley Fink - Wednesday, November 23, 2005 - link

    I receive some emails complaining that I must receive "Cherry" motherboards for testing since my OC results are so high. Of course, part of my success is due to being a long-term overclocker, and overall my results have not noramlly been that different than what other experienced overclockers found on retail boards.

    In this case Asus positioned this as a mainstream board and advised us the board was not positioned as a top overclocker. The ATI Crossfire chipset is an outstanding overclocker and I believe this board, with the design efforts of a talented design team turned out to be a surprising overclocker and that retail boards will also. I really don't think Asus as a company considered that this might be a top overclocker, but certainly someone in Asus design did consider this with the BIOS options that are available.

    The first BIOS was not particularly good for overclocking, but version 2 and 3 are outstanding. We have seem many manufacturers, even tier 1, design boards for overclockers that were mediocre in performance. We have also seen boards that had a solid design but no great OC credentials rise to the top as a great overclocker. In fact, Asus has had a number of this type of "wolf in sheep's clothing" boards over the past few years.

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