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Item#: N82E16813131670

ASUS KCMA-D8 ATX Server Motherboard Dual Socket C32 AMD SR5670 DDR3 1333/1066/800

  • Dual Socket C32
  • AMD SR5670
  • 8 x 240pin

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  • Overview
  • Specifications
  • Warranty & Returns
  • Reviews

ASUS KCMA-D8 ATX Server Motherboard
Most Versatile Dual AMD Opteron 4300 / 4200 / 4100 Serverboard

The ASUS KCMA-D8 server motherboard is a feature-rich yet affordable choice for customers, based on cost effective dual AMD Opteron 4300/4200/4100 series processors, featuring an AMD SR5670/SP5100 chipset, dual-channel DDR3 per processor, high power efficiency, ASUS' unique Proprietary I/O Kit Expansion (PIKE) SAS2 upgrade kit, and ASMB4-iKVM module for remote management, making it an ideal foundation for versatile AMD C32 solution.

12" x 10" ATX Form Factor and 24+8 Pin Power Connector

The ASUS KCMA-D8 serverboard allows users to build a cost-effective and competitive server with more choices. The serverboard follows standard ATX mounting-hole locations, so users can choose either a desktop PC ATX chassis, which is cost-effective and readily available, or server chassis, which offers a rack and tower chassis that can be fitted to a cabinet for enterprise usage. Furthermore, the 24 + 8 pin power connector supports both ATX (for desktop PC use) and SSI (for server use) power supplies, with the former reducing total cost, and the latter offering advanced server features.

High Power Efficiency with 85%+ Vcore Efficiency

The KCMA-D8 delivers 85%+ power efficiency, while CPU is under 30% - 90% working load.

The solid and long life conductive polymer capacitors (sustaining 5,000 hrs @ 105°C) in the serverboard ensure longer component life and lower power consumption — creating higher energy efficiency.

Supports Up-To-Date Opteron 4300 / 4200 / 4100 Processors

KCMA-D8 is based on the latest AMD C32 platform to support 8/6/4 core AMD Opteron™ 4300/4200/4100 series processors, which have outstanding performance-per-watt, saving up to 22% power consumption compared to previous AMD Opteron 2400 series processor (Information is from; while its dual HT3 links (between CPUs) with up to 6.4GTps interconnect rate per link, 6MB shared L3 cache, and eight DDR3 memory delivers better bandwidth performance. The platform is designed for power efficient and cost efficient 2-way server solutions.

Built in Linux RAID 5 Solution

For better data protection, the KCMA-D8 has built-in Promise® ROMB (RAID on Motherboard) to support RAID 0, 1, 10 and RAID 5 in both Windows and Linux operating system. The complete, fast and efficient RAID Solution benefit enterprise customers in maximizing SATA storage system performance.

ASUS PIKE SAS2 6G Storage Supported

ASUS optional PIKE provides slim-sized and flexible storage options. SAS RAID upgrades can be achieved directly via a unique slot - without sacrificing expansion capability. Also, KCMA-D8 supports the latest SAS2 6Gbps storage through PIKE interface, doubling transmission speed of SAS 3Gbps. ASUS PIKE 2008 supports RAID 0, 1, 10 and 1E; PIKE 2008/IMR supports RAID 0, 1, 10, 5 and 50; PIKE 2108 is a hardware RAID solution, which can support high performance RAID 0, 1, 10, 5, 6, 50 and 60.

Built in BMC Engine, IPMI 2.0 + KVM-Over-IP enabled by ASMB4 Module

The optional ASMB4-iKVM provides remote real-time and full control via accessing to the system based on BIOS-level keyboard, video monitor, and mouse (KVM over Ethernet) from any local computer anywhere, anytime.

Learn more about the ASUS KCMA-D8

Warranty, Returns, And Additional Information
  • Warranty
  • Limited Warranty period (parts): 3 years
  • Limited Warranty period (labor): 3 years
  • Read full details

Customer Reviews of the ASUS KCMA-D8

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  • Jeffrey H.
  • 5/4/2016 11:52:02 AM
  • Ownership: 1 month to 1 year
  • Verified Owner

3 out of 5 eggsOk. Not Great.

Pros: Runs very stable so far.
Good price vs other similar boards

Cons: North bridge runs super hot. Installed it in a big case with lots of fans, but still needed to add a fan to keep the temperature down. Might have been fine if you use the onboard video only. Installing a decent video card puts the heat of the GPU right on top of the northbridge.

Other Thoughts: I would have probably gone with a different CPU/Mobo combo if I could go back. Not a Asus issue though. Just not super happy with the Opteron performance.

Manufacturer Response:

Dear Valued Customer,

Thank you for sharing your ASUS experience. Please accept our sincerest apologies for any inconvenience this process has caused. What temperatures is your North Bridge reading at? Please make sure to have direct airflow inside your chassis with cold air intake in and hot air exhausting out to protect your hardware from overheating. If you have any further technical questions or general inquiries, please contact me at We appreciate you feedback and I will let the related department know about your review for ongoing improvements to ASUS products.

Thank you for choosing ASUS!

Best Regards,
ASUS Customer Loyalty – US Support

Did you find this review helpful? Yes No

  • Anonymous
  • 1/19/2016 12:33:12 PM
  • Ownership: 1 day to 1 week

1 out of 5 eggs"Supported" features listed not actually supported

Pros: None, nothing, nada, and zilch.

Cons: 2 CPUs positioned poorly (right next to each other), preventing staggered airflow

Other Thoughts: Hardware RAID 5 flat out does not work on this board, even though it is supposed to be a supported feature. We bought 2 boards for 2 identical machines specifically for RAID 5, and both have the same inability to use Hardware RAID 5. After spending 5 hours on the phone with unhelpful tech support (who would frequently disconnect and never call back by the way, so I'd have to talk with someone new all over again), they have no resolution.

0 out of 1 people found this review helpful. Did you? Yes No

  • Anonymous
  • 7/28/2015 12:39:14 AM
  • Ownership: more than 1 year

4 out of 5 eggsTerrible PCIE Slot Information for Crossfire Setup

Pros: This MOBO is a workhorse. With the drop in AMD C32 chips prices, building an affordable workstation is very doable.

Cons: ZIP,ZERO,ZILCH information from ASUS on how to configure PCIE slots, so no Crossfire yet.
Pike raid is problematic.

Other Thoughts: Handles SSD drives, Handles BluRay Burners, Handles SoundBlasters, Handles SCSI cards

Did you find this review helpful? Yes No

  • Zongxiong Y.
  • 4/8/2015 7:03:38 AM
  • Ownership: more than 1 year
  • Verified Owner

1 out of 5 eggsRAM modules failed CPU memory test

Pros: Purchased 3 boards in 2011 to build 2 servers, one as a backup. The 3rd board was bought as extra insurance.
The board in the main server has worked well so far.

Cons: One week ago, the power supply for the backup server was dead. When a new PSU was installed, BIOS kept complaining some dimm modules failed CPU memory tests. After trying all different combinations, BIOS finally accepted five 16GB ram sticks out of eight. Even worse, these five RAM sticks only provided 64GB usable space instead of expected 80GB. The 3rd unused board accepted even fewer RAM sticks.

Other Thoughts: The 2nd board was a replaced one from ASUS in 2011 because of the same issue of some RAM slots failed CPU memory test. That was why I bought the 3rd one as additional precaution. Connection between CPUs and RAMs is the most crucial aspect in a motherboard and should be made robust and error free even for low end server board like KCMA-D8. ASUS failed this and was a huge disappointment.

Manufacturer Response:

Dear Valued Customer,

I apologize for the inconvenience this may have caused you. Assuming all the RAM sticks are all known good components, the defective power supply that was replaced might have cause some damage to the components on the motherboard due to unclean and unregulated power going into the motherboard and is causing CPU memory test failure on the RAM modules. I may suggest that you send the motherboard for further testing, assuming the replacement power supply unit is a known good hardware. If you need further assistance sending it in, please email me at and write down service# N150441455 on the subject line.

Thank you for choosing an ASUS product.


ASUS Customer Loyalty

1 out of 1 people found this review helpful. Did you? Yes No

  • Eric E.
  • 3/25/2015 10:17:09 AM
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsGood home server mobo

Pros: Lots of great features packaged into one server-class motherboard.

Cons: The iKVM module for this board (ASMB4) is sold out everywhere I tried to find one. Also the PIKE RAID cards are a little hard to come by.

The chipset gets very hot and the cheap tower case I am using doesn't offer enough airflow over it. I had to mount a dedicated fan to keep it cool.

Other Thoughts: Using this to run OpenStack for visualization and a FreeNAS instance to provide a home file server. Using the ASUS PIKE 2008/IMR RAID controller.

Did you find this review helpful? Yes No

  • Jennifer S.
  • 12/9/2014 6:48:23 PM
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsWow.

Pros: Tried this after getting a SUPERMICRO MBD-H8DCL-6F-O that was was dead on arrival. ASUS continues to never let me down after years of quality motherboards.

Quality build. Worked with two AMD Opteron 4386 8 core CPU's out of the box. Has no problem using all of the CORSAIR XMS 64GB (8x8 GB) memory I installed in it running at 1333.

This was used for a workstation build. With two 4386's and 64GB of memory, it just blows me away as far as performance is concerned.

Cons: The motherboards are hard to get every now and then? Other than that. None.

Other Thoughts: I've only used this board for workstation builds. But for a workstation, this is a great base to build on.

Manufacturer Response:

Dear Kalamaru,

We appreciate your time posting this review and we want to thank you for it. Its good to know that your satisfied with the product. For further assistance please email me at and put case # N141258824 in the subject for your reference.

ASUS Customer Loyalty is dedicated in helping you and all other ASUS customers.

Thank you for choosing ASUS.

ASUS Customer Loyalty

Did you find this review helpful? Yes No

  • Joshua R.
  • 11/11/2014 8:35:18 PM
  • Ownership: more than 1 year
  • Verified Owner

4 out of 5 eggs2yr review

Pros: Plenty of expansion options, running a home server dual AMD 4130's 2.6GHz, 16GB ram, 8 HDD. Still running strong. Windows 8.1 and several Hyper-V machines, in process of migrating to Server 2012 with Hyper-V's for better network control

Cons: Unable to update the bios error for the ps/2 (which has not worked since purchase). Wanted to use an old ergonomic ps/2 keyboard when purchased. Not the worst issue. Also unable to have the motherboard raid configured, system would not boot up. Instead, used separate Rosewill PCI raid controller.

Other Thoughts: Recommended. Why use for home and have all this server power,.....why not. More or less

Did you find this review helpful? Yes No

  • Craig C.
  • 7/17/2014 12:47:14 AM
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsAn Update After 2+ Years of Ownership

Pros: Crossfire support! - For those who have been wondering, yes crossfire indeed works! Crossfire does not work under a server OS, however.

Stable, when using Windows 7/Server 2008 R2 or earlier, this thing is rock solid. Windows 8 has a few issues, but nothing that can't be dealt with.

TRIM works with SSDs in RAID 1 with the Promise ROMB. It probably works with RAID 0 too. TRIM also works with the Pike cards.

Cons: The built in RAID, when configured in a RAID 5, does not get along with Windows 8+. Windows has issues detecting the array even after the Promise drivers are loaded. Other RAID levels work fine.

Further more, the ASUS Pike 2008/IMR, when configured in a RAID 5 under Windows 8, does not work either. At least on this motherboard.

The Pike 2008 and Promise RAID cannot be enabled at the same time. You have to choose one or the other, and if you want all 14 drives, you have to place the Promise RAID into AHCI mode. I mainly use the Pike with just a Blu-Ray and DVD drive connected to AHCI.

Has some ACPI related issues that can result in a BSOD in Windows 8+. If you prevent Windows from sleeping, you won't get any crashes.

Other Thoughts: My setup has grown quite a bit since I first built this PC:
AMD Opteron 4180 Processor
Noctua NH-U9D0 CPU cooler
2X 300 GB WD Velociraptor RAID 1
2X 1 TB Seagate RAID 1
2x KVR1333D3LQ8R9S/8GEC 8GB RAM (16GB)
850W Coolermaster PSU
Windows 7 Professional x64

2x AMD Opteron 4340 Processor
2x Noctua NH-U9D0 CPU cooler
2x Samsung 840 Series 120GB RAID 1
6x WD 1TB Black RAID 10
ASUS Pike 2008/IMR
8x KVR1333D3LQ8R9S/8GEC 8GB RAM (64GB)
2x AMD R9 290x
1200W Corsair PSU
Windows 8.1 Pro x64

Make sure you get a case that has good cable management. You will end up with SATA spaghetti if your cable management is poor.

If you purchase the CPU cooler I have, you will need to move the fans slightly up the side of the heatsink and attach them. If you put them in their proper spots, they will touch the RAM.

If you decide to install a pair of video cards, they will be almost touching. Keep this in mind if you do not buy a card with a reference cooler.

Don't be surprised when you start your new rig up for the first time, if it just sits at a black screen for a bit. It takes a little while for it to start POSTing. If you let this motherboard do a full POST, it takes forever. It's a server board though.

I have had very few issues outside of my own creation with this motherboard, and still highly recommend it.

3 out of 4 people found this review helpful. Did you? Yes No

  • Jonas A.
  • 5/8/2014 8:42:49 AM
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsReliable motherboard for over 2 years and counting

Pros: Running for a few years now without issues, reliable, no hiccups

Cons: None

Other Thoughts: It was slightly cheaper than alternatives but the build quality is still great.

Did you find this review helpful? Yes No

  • 12/5/2013 6:48:02 PM
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsGreat value

Pros: Had VMware ESXi 5 up and running within an hour. Dual Opteron 4334, with 2x samsung registered 16g dimms, booting off USB. Works like a charm, didn't have to flash BIOS for the 4334's. Anything that ships past Oct-2011 per ASUS should be a new enough build to support 4200+ Opterons. If it has the 2001 BIOS it will support 4200 and 4300 CPUs out of the box. The 4334 (hex-core) was a steal for $200 apiece (put $30 coolers on each one). Very cost efficient.

Cons: haven't found any so more. For a budget performance server, it is running great. No issues

3 out of 3 people found this review helpful. Did you? Yes No

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Item#: N82E16813131670
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