Basic Features: Asus A8R-MVP

 Asus A8R-MVP
CPU Interface Socket 939 Athlon 64
Chipset ATI RD480 Northbridge - ULi M1575 Southbridge
Bus Speeds 200 to 400MHz in 1MHz Increments
Memory Speeds DDR200, 266, 333, 400
(433, 466, 500 with Rev. E AMD)
PCIe Speeds 100 to 150MHz in 1MHz Increments
PCI/AGP Fixed at 33/66
Core Voltage Auto, 0.8V to 1.45V in 0.025V increments
PLUS 0.2V with vCore Over-voltage
(Maximum vCore 1.65V)
CPU Clock Multiplier 4X-25.5X in 0.5X increments
DRAM Voltage Auto, 2.65V to 3.2V in .05V to .1V increments
HyperTransport Frequency 1000MHz (1GHz)
HyperTransport Multiplier Auto, 1X to 5X
PCI Express Voltage 1.2V, 1.3V, 1.4V, 1.5V
Southbridge Overvoltage Enabled (+0.1v)
PEG Link Mode Auto, Disabled, Normal, Fast, Faster
PEG Bugger Length Auto, Short, Long, Longer, Longest
AI Overclocking Manual, Auto*, Standard*, Overclock Profile
*Set CPU Frequency and Other Parameters Automatically
Overclock Profile Options 3%, 5%, 10%, 15%, 20%, 30%
Memory Slots Four 184-pin DDR DIMM Slots
Dual-Channel Configuration
Regular Unbuffered or ECC Memory to 4GB Total
Expansion Slots 2 PCIe x16
1 PCIe x1
3 PCI Slots
1 Asus MVP Switch Card in Secondary (Black) PCIe Slot
Onboard SATA/RAID 4 SATA2 Drives by ULi M1575
(RAID 0, 1, 1+0, 5, JBOD)
Onboard IDE/IDE RAID Two Standard ATA133/100/66 (4 drives)
Onboard USB 2.0/IEEE-1394 8 USB 2.0 ports supported by ULi M1575
2 1394 Firewire by TI 1394
Onboard LAN 1 Gigabit Ethernet
PCI Ethernet by Marvel Yukon 88E8001
Onboard Audio Azalia HD Audio by ADI AD1986A Soundmax codec
BIOS Revision AMI 0037 (11/17/05) Beta

While the BIOS adjustments are not as extensive as the Asus A8N32-SLI Deluxe or the DFI RDX200, most of the adjustments needed for overclocking control are definitely here.

This includes memory voltage to 3.2V – much wider than most boards and the equal of the Asus A8N32-SLI. Memory voltage does not extend to 4.0V as it does on the DFI, but the only memory requiring these high voltages is OCZ VX and Mushkin Redline, both of which have been discontinued.

After our initial testing showed the A8R-MVP to be an excellent overclocker, we suggested to Asus that they support the higher memory ratios of the Revision E and above AMD Memory Controller and include additional adjustments for memory. Asus added the ratios and a few more memory controls, which will be available on-line as the board begins shipping this week.

The arrangement of options in AMI BIOS has not always been the most intuitive. You will find memory adjustments under “Advanced”, “CPU Configuration”, “Memory Configuration”, and “Memory Timing Configuration”. The logic of this menu nesting is obscure, but once you drill down to memory timing adjustments, you will find a fairly complete range of options. In most cases, you will need to change from “Auto” to “Manual” to bring up the adjustments.

Asus A8R-MVP: Board Layout Overclocking & Memory Stress Testing: Asus A8R-MVP
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  • Avalon - Wednesday, November 23, 2005 - link

    Wesley, just for giggles, can you set a RAM divider and drop your CPU multiplier down to 7x, and see how high the HTT can reach stably? That would be nice to see.
  • n7 - Wednesday, November 23, 2005 - link

    I may have just founds my next motherboard!

    As long as prices do come to the level of a mainstream mobo, this looks very good.

    I have to admit, until the A8N32-SLI Deluxe, & now this, i was extremely unimpressed with all Asus A64 motherboards.

    Now the last two i've seen from Asus look very good :)
  • fitten - Wednesday, November 23, 2005 - link

    quote:

    It is very important that users change the default 2T Command Rate to 1T for best performance.


    I see this a lot (particularly on AnandTech) and have yet to see any *real* benchmarks that show this change results in anything more than a 1% to 2% performance gain, which is typically within the statistical margin of error for the benchmarking performed by most review sites. Are there any definitive benchmarks (that are statistically significant) that show more of a gain than this?
  • Wesley Fink - Wednesday, November 23, 2005 - link

    You have seen this a lot on AT and any site that specializes in performance and overclocking. Memtest86 is a standard test used in the memory industry to test performance. It shows a 5 to 10% increase in performance at 1T compared to 2T - depending on CPU speed and memory frequency. Similar increases are reported by SiSoft Sandra Unbuffered and Everest, which also measure memory bandwidth.

    Memory is only one small part of total performance, and in gaming 1T only increases framerate 1% to 5% depending on the game and equipment used for testing. You are correct that this won't be noticed by most end users, but if you are aiming for absolute top performance in gaming or competetive benchmarking this does matter. We covered this pretty thoroughly with test results in a memory piece several months ago.
  • Live - Wednesday, November 23, 2005 - link

    Very nice review and a nice find!

    I would have loved to have seen the ASRock 939Dual-SATA2 included in the benchmarks. Why? It is just as close in price as many other boards and frankly cater to sort of the same user group. This would also show what can be had in the different price groups.

    I also find this quote a bit strange
    quote:

    But 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.


    I would think that ASUS having low expectations on this board and they being genuinely surprised would indicate that there internal testing does not show the same results as your sample does. Thus indicating it is indeed an over performing sample. This possibility seems just as likely anyway. What I am missing?
  • Wesley Fink - Wednesday, November 23, 2005 - link

    Asus does extensive overclocking tests on their top-line boards aimed at that market. They generally know how they will perform in overclocking. They do more modest tests on mainstream boards. It is my opinion it never occured to Asus that the A8R-MVP might be a monster overclocker until I reported my results back to them. Once I did, Asus was very helpful in adding additional options to BIOS that I suggested would be welcomed by overclockers. Some components limit what Asus can add, but they had added additional options that could be added.

    We do have a very good working relationship with Asus. As an example the first Asus A8N-SLI Premium boards (without the paddle) were supposed to be top-end. Our pre-production samples turned out to be very poor overclockers due to the automatic switches and Asus decided to rework the board rather than bring a mediocre board to market. The revised Premium came about 8 weeks later and we confirmed it was an oxcellent overclocker and a good performer. That is the board Asus brought to market.
  • Live - Wednesday, November 23, 2005 - link

    Thanks for the clarification. I think I got what I was missing. In that light this board does look like a true gem in disguise.
  • nvidia4ever - Wednesday, November 23, 2005 - link

    Is there a reason why the X1800XT was not tested? By chance, did you test the board with a Opteron 148? I could see this combination being great together considering how well both overclock. That would be a killer package at $350. When will the board be available?
  • Wesley Fink - Wednesday, November 23, 2005 - link

    The motherboard lab does not a X1800XT for benchmarking, a fact we point out to ATI whenever we get the opportunity. ATI is still having X1800XT supply problems and they have promised we will have cards for testing as soon as they are available for sampling.

    We have to wonder aloud if we have had so much trouble getting X1800XT for testing, what chance does a "mere mortal" have to buy an X1800XT. We can only say we're glad ATI does not appear to have motherboard chipset supply issues, because the video card situation is horrendous.



  • nvidia4ever - Wednesday, November 23, 2005 - link

    There are several x1800xt cards available here - http://www.newegg.com/Product/ProductList.asp?Manu...">x1800xt cards Is ATI just screwing around with you guys? Can this board run nvidia sli cards?

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