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SUPERMICRO MBD-X10DAX-O Extended ATX Server Motherboard Dual LGA 2011-3 Intel C612
  • Verified Owner
  • neweggOwned For: 1 week to 1 month

4 out of 5 eggs Nice board, if a bit sparse 06/12/2016

This review is from: SUPERMICRO MBD-X10DAX-O Extended ATX Server Motherboard Dual LGA 2011-3 Intel C612

Pros: One of the only 2-CPU boards supporting SLI. I only have it running one CPU for now, but it's rock solid.
Customer service seems responsive and helpful.
Lots of fan headers.
The RAM slots are far enough away from the top PCIe slot that a half-length PCIe card can fit with no problem.

Cons: Now the problems with actually getting SLI up and running:
Unlike SLI-certified boards, this one does not come with an SLI bridge, so you'll have to buy one separately. Even then, though, I couldn't get the video card driver to see that the two cards were capable of SLI. It looks like BIOS 2.0 doesn't actually support SLI. I e-mailed Supermicro, who responded (in 12 minutes!) with a beta BIOS and instructions on how to flash it. The beta BIOS then worked perfectly.

Other minor issues:
- The manual lists level 1-4 for "Supermicro Hyper-Speed", but only 1 and 2 were available for me. (just for info: the level is the percentage BCLK overclock, so level 2 runs the BCLK at 102MHz instead of 100MHz)
- With only one CPU, the only way to use SLI is with the video cards right next to each other, which raises the temperature of the top one dramatically.
- Although there were a lot of fan headers, the actual fan speed control is lacking. (Setting it to "optimal" seems to work OK, but I wish there were more options)
- Stickers on the power connectors say "both 8pin required for heavy load configuration," implying that you don't always need both, but the manual says you must use both or your warranty is void.
- The I/O shield has PS/2 and 9-pin serial cutouts, but the board does not have those connectors.

Other Thoughts: This board seems rather expensive for what is essentially a bunch of wires between a few connectors. The only real chip on it is the C612 chipset. I'm used to "enthusiast" boards with extra USB ports, M.2 slots, WiFi, and other add-ons for this price.
I definitely would have liked some M.2 slots for this. 8 PCIe lanes from CPU1 go unused - they are reserved for the RAID controller on the X10DAC version of this board.
All in all, there were no major surprises. Despite the downsides, I'd still get this board again. Took off 1 star due to SLI issues and price/value.

  • Verified Owner
  • neweggOwned For: more than 1 year

2 out of 5 eggs 07/10/2011

This review is from: OKGEAR FC444PWM-12 12" 4pin PWM fan Y cable

Pros: Usually works OK

Cons: Sometimes one or both of the fans would stop spinning. Wiggling the connector made the problem get better (or sometimes worse!) Plugging in a fan directly works OK. It looks like there is a bad connection at the motherboard connector.

Other Thoughts: A few months back my computer turned off from the CPU overheating - neither fan was spinning. After paying attention to the fans after that, it looks like one of the fans would stop spinning occasionally, then start back up after a few hours. When both fans stopped spinning AND I was running a CPU-intensive program the computer would turn off.

Gave it 2 eggs instead of 1 since it only completely failed twice over the year I've had it.

Western Digital WD Green WD15EADS 1.5TB 32MB Cache SATA 3.0Gb/s 3.5
  • Verified Owner
  • neweggOwned For: 1 week to 1 month

Pros: Silent when idle (but see below), low power consumption, high throughput, BIG!

Cons: 1 out of 5 died after 2 weeks. (Not a big issue; that's why I bought 5!)

The others are doing something very strange. When idle, one of them just decided to make a repetitive seeking noise, like it's reading a fragmented file over and over every second. This starts the instant the drive spins up, even when it is not plugged into the data cable. After another day, one of the other drives started doing the EXACT same thing. Now, after a week of that, the second drive stopped doing it, but a third drive started up...
The drives show no other problems - performance is fine, and the noise stops when the drives are actually being used. SMART results show nothing out of the ordinary. It seems to be entirely inside the drive, as though they spontaneously decided to do some sort of very long self-test.
I hope they figure themselves out soon. I don't want to send back any more of these.

Other Thoughts: Took off 1 egg for the defective drive, and 1 egg for the disconcerting things the others are doing.


Reed W.'s Profile

Display Name: Reed W.

Date Joined: 10/01/03

  • Reviews: 5
  • Helpfulness: 3
  • First Review: 06/26/06
  • Last Review: 06/12/16
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