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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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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



Supported CPU

CPU Socket Type
Dual Socket C32
CPU Type
Dual AMD Opteron 4200/4100 Series
System Bus
HyperTransport Technology 3.0


North Bridge
AMD SR5670
South Bridge
AMD SP5100


Number of DDR3 Slots
8 x 240pin
DDR3 Standard
DDR3 1333/1066/800
Maximum Memory Supported

Expansion Slots

PCI Express 2.0 x16
Slot Location 4: PCI-E x16 (Gen2 X8 Link)
Slot Location 6: PCI-E x16 (Gen2 X16 Link)
PCI Express x8
Slot Location 2: PCI-E x8 (Gen2 X4 Link), Auto turn off if PIKE is occupied, MIO supported
PCI Slots
Slot Location 1: PCI 32bit/33MHz
Slot Location 3: PCI 32bit/33MHz
Slot Location 5: PCI 32bit/33MHz

Storage Devices

6 x SATA 3.0Gb/s

Onboard Video

Onboard Video Chipset
Aspeed AST2050 with 8MB VRAM

Onboard LAN

LAN Chipset
Intel 82574L
LAN Speed
Second LAN Chipset
Intel 82574L
Second LAN Speed
Max LAN Speed
Dual 10/100/1000Mbps

Rear Panel Ports

Video Ports
USB 1.1/2.0
2 x USB 2.0

Physical Spec

Form Factor
12" x 10"

Manufacturer Warranty

3 years limited
3 years limited

Quick Info


  • Limited Warranty period (parts): 3 years
  • Limited Warranty period (labor): 3 years

Customer Reviews of the ASUS KCMA-D8

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  • 12/5/2013 6:48:02 PM
  • Tech Level: Somewhat High
  • 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

Did you find this review helpful? Yes No

  • Ryan F.
  • 11/26/2013 1:19:35 PM
  • Tech Level: High
  • Ownership: 1 week to 1 month
  • Verified Owner

3 out of 5 eggsDoesn't work with Opteron 43xx Procs out of the box

Pros: It's Asus, and I've had great luck with them in the past. Apparently the newer Opterons are supported if you flash the BIOS.

Cons: Need older Opteron to flash the BIOS.

Other Thoughts: Newegg was great about accepting the return on these. For those of you looking to buy one, ensure that you have a processor that is supported on the older version of the BIOS.

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

  • Michael K.
  • 10/21/2013 6:05:56 PM
  • Tech Level: High
  • Ownership: 1 month to 1 year
  • Verified Owner


Pros: LOL!

Cons: We purchased 6 of these boards, 2 of which have gone bad. 6 weeks, these idi*ts still have not been able to get my RMA processed. 18 years in IT, I have never seen such inept support. Give them a shot, you'll see!

Manufacturer Response:

Dear Valued Customer,

If I may, I would like to help. If you are still within the warranty period, please contact our RMA Specialist, Jolene, regarding this issue; and she will be able to set up the RMAs for motherboards. Her email is Within the email, please include a description of the problem, the serial numbers of the servers, and your contact information. Your reference number for this case is 3089643.

For support information, please visit For service, visit For motherboard warranty, visit!Motherboard%20Warranty/c1c20; Refurbished products/accessories:!refurbished-warranty/c16us. For RMA status, visit:


ASUS Customer Loyalty

0 out of 2 people found this review helpful. Did you? Yes No

  • Stephen D.
  • 10/10/2013 10:30:58 PM
  • Tech Level: High
  • Ownership: 1 day to 1 week
  • Verified Owner

1 out of 5 eggsHorrible ASUS Customer Support

Pros: Buidling a vsphere server.. This board works perfect for it. everything showed up great. Would love to use this board for this

Cons: Board came defective. After customer support tech spent about an hour troubleshooting. Tech insisted even though the 4 ram sticks worked in the other 6 slots perfectly. I wasn't using approved ram. Suggested I use newegg's return policy. I shudder to think what I would have to go through if I couldn't return it through newegg.

Other Thoughts: ASUS has completely unreliable customer service. It appears they won't support their products. Also have a zenbook sitting with them for about a month waiting for a repair.

Manufacturer Response:

Dear Valued Customer,

Although the memory you are using is not on the QVL, your memory still may work with the motherboard. In this case, it is unusual that your DIMM worked in 6 out of 8 slots. This would lead me to believe the motherboard is defective. Regarding this, I would suggest setting up a RMA for the motherboard. If you are still outside of the return period and within the warranty, we can set up the RMA as well. Should you need assistance in this, please contact our RMA Specialist, Jolene, where she will be able to set-up the RMA. Her email is

Regarding the Zenbook, I would like to look into this issue myself. Please send your RMA number to my email, and I will escalate this case for you. For both cases, your reference number is 3089885.

For support information, please visit For service, visit For motherboard warranty, visit!Motherboard%20Warranty/c1c20; Refurbished products/accessories:!refurbished-warranty/c16us. For RMA status, visit:


ASUS Customer Loyalty

0 out of 2 people found this review helpful. Did you? Yes No

  • Jason D.
  • 5/19/2013 12:48:07 PM
  • Tech Level: High
  • Ownership: 1 month to 1 year
  • Verified Owner

2 out of 5 eggsUsable but Ultimately Disappointing

Pros: ATX format, PCI-E x16 slot, arrived with the latest BIOS supporting Opteron 4300 series, great fan control keeping machine both cool and quiet, thoroughly configurable BIOS options with great administrative features like KVM over IP and network booting.

Cons: Two USB ports. No, seriously. TWO. Two of them! BIOS will only let you configure the six available SATA (1-4, 5-6) ports as either IDE+IDE, AHCI+AHCI, RAID+RAID, RAID+IDE but *NOT* RAID+AHCI. Uses a proprietary add-on SAS/RAID solution ('PIKE') that costs well over $100 and would make this board almost as expensive as the competing Tyan product, no onboard audio, remote administration also requires an additional proprietary add-on module (ASMB4-iKVM) which I believe is around $80 (though not currently offered by Newegg), unbelievably long boot time.

Other Thoughts: Because of the limited SATA port configuration options available in the BIOS, my main boot drive, a Samsung 840 Pro series SSD had to be installed as RAID to reap any benefits of its performance over using IDE and still be able to use a RAID array with other drives on the remaining ports. However, despite Windows 7 Pro x64 installing without issue to the SSD, it and the Samsung Magician software do not recognize it for what it is, so it ultimately underperforms in Windows. TRIM appears to work, fortunately, and the Samsung Magician software can scan it, and update the firmware, but cannot run any performance tests on it or erase it. Almost all of the application's options are grayed out.

Recently, after a catastrophic system crash caused by trying to run third party temperature monitoring software (CoreTemp) because ASUS does not offer such a utility compatible with this board despite there ALWAYS being a necessity for such regardless of market segment, both onboard Intel gigabit ethernet chips got fried somehow. The problem has persisted through driver re-installation (both chips fail internal diagnostics), Windows System Restore to before the crash, Windows System Restore from Image Backup to two weeks before the crash, resetting the mobo to factory defaults, resetting the TCP/IP stack and Winsock, safe mode, bypassing router, and exists in Ubuntu installed on a separate physical drive. Definitely the NICs. Have had to request an RMA through ASUS since the board was purchased over 90 days ago. I've had plenty of system crashes on both Windows and Linux before across many platforms and have never experienced such a singular component failure before. I imagined a server/workstation motherboard would be a bit sturdier...

I've used this board to build a CGI workstation on the bones of a previous system so I was glad for the ATX form factor. Still, not being able to cram at least 4 USB ports on to this board while most enthusiast boards seem to have 6 or even 8 is just min- boggling. I can't have all my peripherals connected at once and will probably have to invest in a USB hub.

Additionally, I've experienced an odd behaviour mentioned by other reviewers about this board: unbelievably long boot up time! When I first turn on the power, the lights and fans kick on with all the usual noise but nothing happens for about 10 seconds. Then the computer appears to reboot; it goes very quiet but the lights stay on, then comes the the BIOS POST and confirmation beeps. POST, RAID Config, and if you leave it enabled, network boot screens, altogether consume about 20-30 seconds of boot time before Windows even start its boot process. Because of this, despite having an SSD (or perhaps since I can't have it on an AHCI controller), it still takes me about two minutes to get from power on to Windows desktop. I've really saved no time despite the upgrades from 7200rpm hard drives and Windows Vista.

Given all these factors, I can't recommend this board.

Manufacturer Response:

Dear Valued Customer,

Sorry to hear that your board got fried. Do you already have an RMA number issued. What is the RMA number so I can check the status of the repair for you. If you still haven't received an RMA number, I can have one of my collegue assist you.

Don't know why there's only 2 USB ports. Could be this is a budget server board, as our new boards have up to 6 USB ports including a couple USB 3.0.

Regarding the bios settings, that is just how the bios is setup. Even on the newer boards, If you use the RAID mode, all drives from port 1-4 are RAID. This is also the same for AHCI.

If you have any questions or comments you can email me at which I reside in the U.S

ASUS strives to meet and exceeds our customer expectations within our warranty policy.



Did you find this review helpful? Yes No

  • Derek T.
  • 5/13/2013 7:21:07 PM
  • Tech Level: Somewhat High
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggs Great board for budget server

Pros: I have owned the board for over a year. Running dual quad core processors with 16GB of DDR3 ram and a 32GB OCZ SSD. Originally installed VMware ESXI 5.0 and updated to 5.1 a few months ago. Great hardware to run vm's on. Great motherboard to expand on.

Cons: First motherboard I received was not powering up correctly being an electronics techniction in trade pulled out the multimeter and found a schematic online and found that there was a bad capacitor on the board. Got an RMA from newegg and had it replaced within a week. Sometimes you can't help manufacturing defects which in my opinion should not effect the overall rating of the product.

Did you find this review helpful? Yes No

  • Patrick S.
  • 1/21/2013 12:48:28 AM
  • Tech Level: High
  • Ownership: more than 1 year
  • Verified Owner

4 out of 5 eggsGood board, but one big issue

Pros: Lots of features, good performance. Used it in 2 different server builds

Cons: The graphics on this board always lag, no matter what processor or OS I've used.

The real big con to this is bios support, or at least right now it is. NewEgg will not tell us what bios we will be getting for a new order. So all the C32 chips they have might not even work with it since it will need the bios update.

Of course you can't do the bios update without an older supported processor.

I wanted to use this board for another build, but I think I'll have to choose another unless I can get a confirmation from NewEgg/Asus that the ones shipping now will support the 4334

Other Thoughts: I would buy this board again, allowing I knew the bios wouldn't be an issue.

If you have the 4100 series chips, then you have no issues.

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

  • Anonymous
  • 9/23/2012 11:46:00 PM
  • Tech Level: High
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsWorks as expected

Pros: Server board in ATX formfactor. I bought this board to run with Hyper-V server. Specs:

2x Opteron 4180 (6 core)
8x Corsair 4GB DDR3 "Value Memory" (32GB total)
2x Dynatron F558 Socket F CPU Coolers

After more than one year I have upgraded the server to boot from an 80GB SSD and upgraded Hyper-V 2008 to Hyper-V 2012.

The server has 4 1.5TB Seagate SATA drives. 2x Raid 1. I am running about 15 VM's on it, but I have started to run out of RAM so I will be upgrading to 4x Kingston 16GB modules of registered memory.

This board has worked just fine, right out of the box, for what I use it for.

Cons: There are no cons when this is used as a server board.

Did you find this review helpful? Yes No

  • Matt W.
  • 9/18/2012 8:45:06 PM
  • Tech Level: Average
  • Ownership: 1 month to 1 year
  • Verified Owner

2 out of 5 eggssomething just isn't right

Pros: nice dual socket mobo with lots of cool things to play with.

Cons: from the start, one of my ram slots would not start, dimm_C2. It would boot to an error saying this slot has not passed ram checks, from here i can either boot with 3 sticks or go into settings. I moved all my sticks around to every configuration, but still dimm c2 would not work.. I thought it was one of my cpus, replaced and still have problem. Updated bios, no change. The bios in system information says 12gb ram, but when I boot into windows it says 16gb (12 usable) weird? gentoo detects 12gb.

Also, another con is that my mobo will not save any settings. For example, I have a pci sata 3 card. If I set the mobo to boot from that, the next time I boot, it will boot from my sata 2 harddrive. I have to manually go into bios every time I reboot.

Other Thoughts: buying non-popular boards makes it hard for any forum or online support because there is a small community.... aka there is almost nothing online about this board, even after a year that I've had this.

2x 4180 opteron
16gb GSkill ripjaws
gtx 460
sata 3 ssd

Manufacturer Response:

Dear Valued Customer,

Depending on if you use one CPU, DIMM_C2 is not used. If you use two CPU's and have 4 DIMMS, populate in slots A2, B2, C2, and D2 (2 DIMMS for each CPU). Can you tell me what memory you used? Please specify part no.

You should be able to set boot order via Boot > Boot Device Prioirty > PCI SATA 3 card as the 1st Boot Device. Do you have other settings in BIOS changed such as system clock but are lost after a reset?

My email is Please reference #C1037-4590 when replying.

Thank you.

ASUS Customer Loyalty

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

  • Justin M.
  • 7/23/2012 2:58:05 PM
  • Tech Level: High
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggs

Pros: A lot of hardware packed into a small budget. Over a year running with dual six-core Opterons and this board hasn't skipped a beat once. No complaints.

Cons: None

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

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Item#: N82E16813131670
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