More Features: Asus A8N-VM CSM


The 4 DIMMs support up to 4GB of ECC/non-ECC unregistered DDR memory in a dual-channel configuration. The color coding is correct here - match colors for each channel - but this places the DIMMs with no spacing in-between in a 2-dimm setup. IDE and Floppy cable connections are all at the upper right edge, which is normally the best location.

The 430 Southbridge supports 4 Sata2 ports, where the cheaper 410 supports just 2. Asus uses the full-surround SATA connector for a more durable port connection.

Keeping with the image of a higher end integrated chipset, Asus includes an IEE1394 Firewire port on the rear IO. You can also see the Dual video connectors in the IO ports. We tried running both ports at the same time and had no problem at all. IMPORTANT: The DVI-D port will only work with a digital display, such as a flat panel or digital TV. You cannot use an adapter on the DVI-D connection to drive an analog connection.

The BIOS options were surprisingly sparse on the Asus A8N-VM CSM. As you can see, there really aren't any voltage adjustments at all - no vCore, vDIMM, or chipset voltage adjustments. The board supports AMD Cool'n'Quiet, but then has no means of adjusting multipliers in BIOS. The CPU clock is adjustable, but with a very limited range from 200 to 240. The point is that there are extremely limited means to really overclock the A8N-VM.

Asus provides a fairly complete selection of memory adjustments, but without the most important voltage adjustment for memory, the adjustments are something of a moot point. There are no memory voltage adjustments at all in the current Asus BIOS.

We confirmed that the Graphics Clock Frequency was really 475 instead of the 425MHz seen in the base GeForce6100 chipset. While this should provide better graphics performance, you will see that the real impact is pretty small.

Basic Features: Asus A8N-VM CSM Test Setup
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  • highlandsun - Thursday, December 1, 2005 - link

    Yes, Googer is missing the point that this is supposed to be a complete *Media Center*, that means audio too. I need SPDIF in/out for my minidiscs and other audio devices. I have a multichannel amplifier but I'd prefer to feed it with a pure digital signal. And yes, the PCI slots are already spoken for (Fusion HDTV tuner).
  • BigLan - Thursday, December 1, 2005 - link

    Actually, spdif and HD audio are pretty much mutually exclusive. The main benefit of spdif is to pass a dolby digital or dts audio stream untouched to a receiver from the dvd disk (or .avi file.) HD audio allows the motherboard to do 7.1 sound on the motherboard, which is then sent out of the analogue outputs - the 7.1 sound in games etc doesn't use spdif unless you have a soundstorm2 board or certain soundcards which do dolby digital encoding.

    For most HTPCs, HD audio doesn't actually do anything.
  • Googer - Thursday, December 1, 2005 - link

    If i am not mistaken, ATI's chipset allows for 32 or 64MB of dedicated video RAM to be soldered in to the motherboard. This prevents it from having to resort to system memory.
  • USAF1 - Thursday, December 1, 2005 - link

    Hmm... I could be mistaken, but I'm pretty sure that the Marvell 88E1111 "Alaska" chip is just functioning as the PHY for the GbE resident in the nForce 430 southbridge chip. I don't see anything in the 88E1111 tech docs that indicate that it's a fully functional PCIe GbE controller - for that you'd need something like the Marvell's 88E8050 "Yukon" chip. Here are some links:

    http://www.marvell.com/products/transceivers/singl...">http://www.marvell.com/products/transceivers/singl...
    http://www.marvell.com/products/transceivers/singl...">http://www.marvell.com/products/transce.../Alaska_...'marvell%2088e1111'
    http://www.marvell.com/products/pcconn/yukon/index...">http://www.marvell.com/products/pcconn/yukon/index...
  • Wesley Fink - Thursday, December 1, 2005 - link

    The Marvell is a Gigabit PHY, just as in other nForce4 chipsets. As our benchmarks show, it is definitely operating at PCIe speeds.
  • USAF1 - Thursday, December 1, 2005 - link

    The fact that a certain PHY (Marvell 88E1111, Vitesse VSC8201RX, etc) and nForce4 MAC combo runs at speeds similar to a dedicated PCIe controller, doesn't make it a PCIe-based solution. Your article would lead one to believe that the Marvell 88E1111 is a PCIe-enabled GbE controller, which in fact it is not.
  • Wesley Fink - Thursday, December 1, 2005 - link

    We stated clearly in the Features Chart that the Marvel is a PHY (Physical Layer) chip. This is what we have been seeing in nF4 chipsets for quite a while.
  • USAF1 - Thursday, December 1, 2005 - link

    Sorry Wesley, but I still think that your article is misleading. The quote "Asus used the PCIe Gigabit hooks in the 430 Southbridge to provide PCIe Gigabit LAN on the A8N-VM." is just not factual. Neither are the "PCIe" labels next to "Marvell 88E1111" on your graphs. The fact of the matter is that there is no PCIe GbE on this board, yet it's plastered all over the "ethernet performance" section of your article. Why don't you just fix the mistake? Where is Anandtech's vaunted journalistic integrity???
  • Wesley Fink - Friday, December 2, 2005 - link

    Upon further research, it does look like the 88E1111 does use a different approach to Gigabit LAN than the PCIe solutions. Marvell refers to the chip as a "Single Port Transceiver". From a users perspective, the performance was found to be the same as PCIe Ethernet, but we have made a few changes in the wording and graphs to more accurately describe the Gigabit LAN used on this board.
  • USAF1 - Friday, December 2, 2005 - link

    Thank you very much, Wesley. Now I can stop talking bad about you and your extended family. ;)

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