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Item#: N82E16813182186

SUPERMICRO MBD-X8DAi-O Extended ATX Server Motherboard Dual LGA 1366 Intel 5520 DDR3 1333

  • Dual LGA 1366
  • Intel 5520
  • 12 x 240pin

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  • Overview
  • Specifications
  • Warranty & Returns
  • Reviews

Supermicro has established itself as a leader in server technology, and continues its strong commitment to give you best server solution with the MBD-X8DAi-O server board. This board supports up to two Dual-Core/Quad-Core Intel Xeon 5500 series processors at 4.8 GT/s, 5.86 GT/s, and 6.4 GT/s speeds via the Intel QuickPath Interconnect, to handle even the most demanding applications. With 12 DIMM slots, it can support up to 96GB ECC registered or 24GB unbuffered DDR3 800/1066/1333MHz memory to significantly improve the computing capability.

This motherboard has a full range of expansion choices: it features two PCI Express 2.0 x16 slots, providing substantial I/O bandwidth for current and future application needs; it protects your investment with one PCI Express x4 slot and three PCI 33MHz slots as flexible options for server utilization.

The server motherboard has integrated 6 SATAII 300MB/s ports which have built-in RAID support for better data protection. This really benefits small- to medium-sized business with the best upgrade capability and data protection.

  • newegg Supports Dual Intel Xeon 5500 Series With dual LGA 1366 sockets, the SuperMicro MBD-X8DAi-O server board supports up to two multi-core Intel Xeon 5500 Series processors, providing the computing platform capability necessary for your increasing computing demand.
  • newegg Scalable DDR3 Memory Twelve 240-pin DIMM sockets support both registered (RDIMM) and unbuffered (UDIMM) DDR3 memory at speeds of 800, 1066 and 1333MHz, ensuring ample capacity for any application.
  • newegg SATA II with RAID Support The second generation SATA interface delivers up to 300MB/sec transfer speed, doubling that of the first generation Serial ATA. The on-board six SATA II ports with built-in RAID 0, 1, 10 and 5 support provide flexible, scalable storage and enhanced data security.
  • newegg Flexible Expansion With dual PCI Express 2.0 x16 slots plus one PCI Express x4 slot, the SuperMicro MBD-X8DAi-O supports a wide range of add-on cards for superior expandability.
  • newegg Super Doctor III Server Management Software The bundled Super Doctor III software offers a complete server management solution that maintains server health, maximizes system uptime, reduces the total cost of ownership and provides powerful tools for monitoring and controlling your SuperServers from anywhere with ease.

Learn more about the SuperMicro MBD-X8DAi-O

Warranty, Returns, And Additional Information
  • Warranty
  • Limited Warranty period (parts): 1 year
  • Limited Warranty period (labor): 3 years
  • Read full details

Customer Reviews of the SuperMicro MBD-X8DAi-O

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  • Anonymous
  • 11/1/2009 6:18:31 PM
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggslots of space for expanding

Pros: Lots of real estate for future expansion. In particular, lots of space for more RAM. Everything worked out of the box. I actually like the BIOS and find it has a bunch of options. However, this is my 1st server board and so far I can only compare this BIOS to cheapo boards.

Good documentation.

Cons: One of the mounting holes doesn't line up. Not a big deal, but a bit annoying.

IDE connector would be nice.

Other Thoughts: I didn't experience the long POST times others have described. Maybe I got a board with a newer BIOS than they did?!

The board is huge, which I like. Just make sure you have a spacious case for it.

Am running 2 5520s on it and 12GB of RAM. Make sure to buy DIMM's in set of 3s - the board wants them interleaved, so that 3 DIMMs per processor is the minimum.

I am not a big fan of on-board pseudo-RAID. So I haven't tried this option, but rather run a 3Ware Raid controller. If you want though there are plenty of SATA connectors on board the MB.

I am very happy with this purchase and would buy a Supermicro board again.

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  • Anonymous
  • 10/22/2009 9:23:25 PM
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggsnice board, low power consumption

Pros: will use standard or registered memory. Came with six Sata cables. Includes backing plates for server style heatsinks. 12 memory slots, four rear USB ports. maximum 96 GB RAM (registered).

Cons: no onboard video.

Other Thoughts: POST takes less than 10 seconds, unlike the 60 seconds reported in other reviews. After reading reviews and the online manual, I bought a 950 W psu for this board, only to see it register 126 W on my meter. (One 80 W processor, HD 4350 video card, two hard drives,18 GB RAM). Even 500 W would be overkill, I could have saved some money.

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  • Anonymous
  • 10/20/2009 5:52:32 PM
  • Ownership: 1 month to 1 year
  • Verified Owner

4 out of 5 eggsGood Platform

Pros: This is a strong platform to build a workstation. Its rock steady and comes with 2x 16x PCIe slots. The onboard RAID is vary good like most Intel solutions. The integrated NICs have some nice server grade management features. The board is well designed to allow good room for ram heatsinks and the CPU HSF. You do NOT need registered or ECC RAM with this system. I have built 2 workstations with t his motherboard and used diffrent brands of regular non ECC pr Registerd DDR3.

Cons: The system lacks many power management features found in desktop/workstations. It does not do Wake on LAN (WOL) or sleep correctly. BIOS layout could be better. I understand the serial ports are common on servers for UPS management however I think they should stack them and give you more USB on board. Audio is not always as clear as I would expect and has some electrical noise.

Other Thoughts: The slow boot times address by some other review have been corrected with a BIOS update. I used XIGMATEK Dark Knight heats sinks and did not have to go get any special screws they simply worked out of the box. In my case (dual quad 2.26 and 12 dimms of RAM) I didnt need the 2nd 8 pin power connector.

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

  • RYAN O.
  • 9/21/2009 5:38:40 PM
  • Ownership: 1 month to 1 year

5 out of 5 eggsAnimation Super Computer

Pros: I work with programs such as Autodesk Maya, 3dstudio Max, Realflow, Adobe Photoshop, and Adobe Aftereffects. This board scales perfectly it is two computers in one. The benefits are less power less hardware and much more ram………………
If you are looking for a high performance machine this is a good foundation…

Cons: I don’t like to spend a lot of money on the case for a computer. This motherboard unfortunately is very large and If you want all of the holes to lineup and just a case big enough to fit this monster of a motherboard you need to buy the “SuperChassis 745TQ-800 / 745TQ-800B”

Other Thoughts: I have put this motherboard to the test, Rendered for days using 10 to 15gb of RAM and 100 % of the processors. I have used it to calculate millions of particles in RealFlow not once did it even hesitate. This is by far Intel and Super Micros masterpiece.

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

  • Kyle W.
  • 6/3/2009 12:27:48 PM
  • Ownership: 1 month to 1 year
  • Verified Owner

4 out of 5 eggsfast board, after the POST

Pros: lots of RAM
Dual CPU
6 onboard SATA ports
2 internal USB connectors to connect normal external ports. Was helpful when connecting a CD-Drive via a USB adapter since this board lacks an IDE port (and the case I bought a 3U server chassis with an included slim DVD drive)

Cons: takes 62Sec to POST!
NO IDE connector

Other Thoughts: I have 24GB of ECC RAM (6x4GB)
2.4GHz Xeon E5530 quad core CPU with HT - eight virtual cores baby!
Next year I'm going to put in for an upgrade to add a second CPU and double the RAM.

Took me hours to figure out it was normal for the system to take forever to POST. I had gone into diagnostic mode and was trying different hardware when I finally paused to think long enough that the machine POSTed on its own.

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  • Charles R.
  • 5/25/2009 5:51:39 PM
  • Ownership: 1 week to 1 month
  • Verified Owner

1 out of 5 eggsNothing but trouble...

Pros: After it posts, it recognized both my CPU's and ~20/24 GB of my RAM.

Cons: Outrageously long time passes between power on and post. After a crash during an overnight render, the board will not post. Power+HDD LED are unresponsive, yet the fans running off the board are powered.

Other Thoughts: When I contacted T.S. about the long boot times, they told me to update the BIOS, which they make difficult. The BIOS they e-mailed me was the one "floating around the office" in case any of you are looking for an update. I haven't had the chance to figure out the BIOS update process, which is moot because it wont even start now. At this grade I expect more, and for a $400 board, this is ridiculous. My cooling is good enough to rule it out as the culprit. If by some small chance I discover the fault lies elsewhere, I will change my rating, but at this point, all evidence is pointing to the MBD-X8DAi-O.

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

  • Timothy L.
  • 5/19/2009 12:04:46 AM
  • Ownership: 1 week to 1 month
  • Verified Owner

3 out of 5 eggsNice once it's working

Pros: Supports two processors, fast. Very good intermediate workstation for those who don't want to go with a full server setup, but need dual processors.

Cons: As both reviewers mentioned, the bottom right hole does not correctly align in an EATX case.

Had the same problem as working_in_tx, system takes about 45 seconds to post. I'm using the CT3KIT25672BA1339 RAM kit, and I assume the problem might be related to how this 1333 FSB Ram interacts with a 1066 FSB processor (e5520). If RAM is not installed, it will give you the "no ram" beep code immediately, but if RAM is installed but a video card is not, it will wait 50 seconds before giving you the "no video card" beep code. However, once it's up there are no problems.

The best graphics card slot is annoyingly covering the hookup for external 1394 so it's hard to cable things to use both.

Other Thoughts: Many thanks to working_in_tx, who saved me from two weeks of staring at this thing and wondering why it wouldn't post.... i kept turning it off after about 20 seconds thinking it had hung.

You have to be careful with your choice of heatsink. This already has a backplate, so some heatsinks whcih require their own backplate (e.g. Coolermaster Hyper N520) will not work with this case. Some on here mention the Noctua's, I went cheaper and used the xigmatek Dark Knights, which seem to work very well.

You'll also want to be careful to make sure that your power supply has two 8 pin 12 V rails, or at least an 8 pin and a 4 pin rail, then you can buy a 4 pin to 8 pin converter for the second.

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

  • Paul M.
  • 5/14/2009 12:15:06 PM
  • Ownership: 1 week to 1 month
  • Verified Owner

3 out of 5 eggsWorks with Caveats

Pros: Once it works, it works great
2 x16 pci slots
EATX form factor

Cons: WARNING: be careful what psu you use: does not work well with Thermaltake toughpower 1200 or Enermax Revolution 85+ 1050. After trying both, I was successful with a Corsair TX750W which has one massive 12v rail.

I agree with paul_in_salem: 1 of the EATX mounting holes is not aligned.

Time from power on to POST seems slow (>30sec), and doesn't seem to be related to the amount of ecc memory (I've tried 2GB-12GB). I've tried several different BIOS options to limit this time, and haven't had any success.

There are minor design nits: placement of main 24p connector is too close to a row of memory, so that one stick needs to be pulled if you want to unplug it. Also 1394 headers are too close to one of the x16 pci slots: externally keyed connectors may need to be trimmed, and any card in the pci slot may push down on the top, but they're workable.

Other Thoughts: I also used Noctua's for cooling, and had to customize the connector. My advice: don't use the black plastic spacers that come with the Noctua - they'll rest on some surface mount capacitors, and too much pressure could kill them. Instead I cut 3mm threaded rod and installed lock nuts at the appropriate height, resting the top half of the Noctual assembly on that. I hear Noctua is reworking how they attach to these new xeon sockets, so just double check before you buy.

Northbridge fan seems quiet, which is good because adding a different cooler would be difficult without losing a x16 pci slot -- particularly if you're using the slot for a 2 slot wide graphics card.

7 out of 7 people found this review helpful. Did you? Yes No

  • Paul D.
  • 5/2/2009 7:30:41 AM
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsClose to an X58 Skulltrail

Pros: Fast, 16 cores with 5500 series CPU, low power/heat, lots of fan connections.

Cons: Mounting holes don't 100% line up with standard EATX case (1 hole off), only 2 PCI-E 2.0. Had to go to Lowes to get 3mm screws to install Noctuas. Only allows SATA DVD.

Other Thoughts: Machine is used as an academic research platform, not a gaming rig. One PCI-E 2.0 holds a Tesla C1060, the other a FX570. Uses two 5520s, two 500G WDs in RAID0, HAF 932 case, 24G XMS3 RAM, ST1200 power, Noctua NH-U12P coolers, Sony BluRay, Vista x64. Noctuas are overkill, 5520s are very cool (in temperature).

8 out of 8 people found this review helpful. Did you? Yes No

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Item#: N82E16813182186
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