Asus A8R-MVP: Board Layout
The box for the Asus A8R-MVP is dark grey and strewn with confetti, perhaps to announce the party inside, but it is certainly not a serious package like we see on the top-line Asus boards.
Click to enlarge.
Nonetheless, all the top Crossfire AMD features are there, such as dual x16 PCIe slots that support a single x16 video card or dual x8 Crossfire.
Just as important are the SB450 south bridge limitations that are not here. The Asus A8R-MVP is the first board that we have reviewed that uses the ULi M1575 south bridge instead of the SB450. This means full support for 4 SATA2 devices, and fully competitive USB performance with 8 USB 2.0 ports.
The ULi M1575 also has the necessary hooks to support Azalia HD audio, like the ATI solution. Asus has chosen the Analog Devices Azalia High Definition AD1986A audio chip to drive 6 channels of High Definition Audio. You can find more information on the Analog Devices HD Audio AD1986a at
http://www.analog.com/en/prod/0,2934,AD1986A,00.html.
The A8R-MVP uses a simple slot insert that Asus calls MVP for x16 and dual x8 switching. This is the same simple arrangement that we saw on early ATI Reference boards. The card goes into the slot nearest to the CPU for x16 mode and is removed for dual x8 Crossfire. There are no complicated internal switches as we've seen on some other Crossfire boards, which may be one of the reasons for the excellent overclocking that we see on this Asus.
Click to enlarge.
The basic layout of the A8R-MVP is typically Asus, meaning that the layout overall is very good. Cooling is passive - there are no active fans - which is also typical of Asus designs. You will notice that there is nothing on the board which would announce that this might be a serious overclocker, except perhaps for the large heatsink covering the power Mosfets. Even here, we see a 3-phase design instead of the robust 4-phase designs used on the ATI Reference boards.
The 4-pin 12V and 24-pin ATX power connectors are at the preferred location on board edges. There is no need to snake cables over the CPU or slots when this location is used. The 4 DIMMs are also color-coded for Dual-Channel: the blue slots are one channel and the black slots are the other. When running 2 DIMMs, this alternate spacing makes it easier to keep the DIMMs cool.
A single video card goes in the blue slot, so even if it's double-width, you still have a usable PCIe x1 and 2 PCI slots. In the worst dual video arrangement of two double-width cards, you still have 2 usable PCI slots. If the cards are single width, you gain a PCIe x1 and another PCI slot.
Asus does not include an additional SATA2 controller on the A8R-MVP, but it really isn't needed. The ULi M1575 provides four SATA2 ports that can be combined up to RAID 5 if you choose.
IDE and floppy connectors are ideally located on the right edge of the board - where they belong. However, they are really strewn all the way across the right board edge instead of being concentrated in the upper right quadrant. The lower IDE and floppy connectors are card-edge connectors, which keep cables out of the way of cards. However, you may want to connect these card-edge cables before securing the board in your case - especially in a tight case design. You shouldn't have an issue with IDE, floppy, or SATA connector placement, but look carefully at how cables will be managed in any case that you are considering.
This may be a mainstream board, but Asus still includes IEEE1394 Firewire and HD audio. There are also 6 jack-sensing connectors driven by the HD audio chip and a coaxial SPDIF port.
Facebook
Twitter
RSS
74 Comments
View All Comments
EnlightenedOne - Thursday, December 8, 2005 - link
Hey Wesley, Great Review!I was wondering a few things with this motherboard and the setup.
First, do you think the clawhammer 4000+ would overclock better than the Diego?
What voltage are you feeding your ram to reach such a high frequency?
Do you suggest using the 246 x 12 or the 325 x 9 set up for games?
Finally, what voltage are you feeding the PCIe slot? Also, why haven't you upped the voltage to your cpu core to maintain stability and go beyond 2 days? :)
Zebo - Thursday, November 24, 2005 - link
Great having spread out memory slots. I found many A64 boards stack the dual channel sticks so close they are actually touching between sticks fi you have heat spreaders on there and they can't cool.Price!! I sure miss top of the line boards in the $100 range (Abit NF7-S Abit IS7 etc)granted this new era has high power requirements and thus a beffier boards but no excuse for these $200+ mobos floating around for enthusiants. nV and Intel must be charging crazy high prices for thier newer chipsets.. Thanks ATI.
Legacy support - My printer won't work with full features on USB alone... needs Parallel cable for full control which my DFI does'nt have.
- overclocking potential as Mr. Fink illustrated.
- full features including Fast disk benches and great on-board audio (FWIW).
- Passive cooled mobo design - How many of you hate those whinny 40mm/60mm fans that come on mobos? When they work that is.
Asus really needs to adopt Black though for thier entire lineup unless it goes in an OEM build.. I mean that yellow traces and green board is so 1990's.:(
Live - Thursday, November 24, 2005 - link
s.I couldn’t agree more. Those small fans are highly unreliable and very noisy. And with today’s heat pipe tech there is no reason to not go passive even on the high end boards. ASUS seems to be leading the pack on this. To bad they cant/won’t go all out in their bios. DFI in particular have them beat in bios all the time.
Sxotty - Wednesday, November 23, 2005 - link
That is really not a very thoughtful way to look at it.
If ASUS was "surprised" by your results that would argue they are atypical not typical. It is not as though they never tested the motherboard to see if it worked. If you ever find an engineer surprised by your results than you should assume that they do not represent what the acerage was expected to be. Perhaps it is a wonderful overclocker, but that is evidence that it is not. Perhaps the engineer that was so "promising" really did an excellent job and the other people you spoke with just did not happen to know the test results.
Wesley Fink - Wednesday, November 23, 2005 - link
I can only report what I actually find, and we can both "suppose" all day long. Time will prove whether these overclocking results are typical or atypical.As i said in a comment above: "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."
I have worked closely with the Asus Engineering team in Taiwan on several Enthusiast board projects, and since my initial results were shared with them after the second BIOS they have not given me any reason to expect that they are not typical for this board. As I said in the Final Words: "We would feel much more comfortable in our praise of the A8R-MVP if we had an opportunity to prove similar overclocking on another five boards pulled at random from retail shelves."
Zebo - Thursday, November 24, 2005 - link
ATI “Certified Motherboard?"?afrost - Wednesday, November 23, 2005 - link
I can't wait to get my hands on this board.....I have been waiting for a solid passively cooled board like this for a long time.The HD audio is a very nice bonus.
Wesley Fink - Wednesday, November 23, 2005 - link
We did additional tests on the Asus A8N32-SLI Deluxe Dual x16 this morning, running at our standard 1280x1024 with AA and AF turned off, with 81.87 drivers. We have added A8N32-SLI benchmarks to F.E.A.R., SC-CT, Quake 4, Doom 3, Far Cry, and Wolfenstein - Enemy Territory.The added benchmarks do not really change any of our conclusions. As you can see, the Asus A8R-MVP is very competetive with the top-line A8N32-SLI Deluxe.
nvidia4ever - Wednesday, November 23, 2005 - link
Thanks for the updates. It really does look like there is another performance choice now for AMD systems. I still would find it interesting to see how a x1800xt performs on ATIs own chipset.Duplex - Wednesday, November 23, 2005 - link
The only thing me and my friends missed is overclockingresultsfor the memory with tight timings like 1T 2-2-2-5 or 2-2-2-7.
The 1T overclocking performance for Asus and Abit has yet been very poor,
with tigh timings even worse. Abit has added higher vdimm options but it
hasn´t helped much. Has this changed with this Asus-Ati-mb or is dfi nf4
still my only option for pc-builds? 230/240/250/260 (/270) MHz???