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This board has an IPMI interface, allowing you remote desktop management over IP
Wiring is easy and straightforward.

Front panel wiring


Power pin outs

Got this combo for  my NAS build, SuperMicro X8DTT-F Motherboard with 2x Intel E5620 CPUs, can't complain for $50-USD. The board dimension is ~17"x7"; so it's easily hacked into a 4U or ATX case.

this is strange as the z820 uses the same 850W as the z800: Delta DPS-850DB A

Both Z800 and Z820 850W PSU have different PN# That may explains the different pin out.

In the end I bought a Z820 barebone, to save cost and time. I'll try to do a trace on the main harness loom when I get a chance.

I saw a z820 motherboard on ebay for $280. not too bad. then I read the seller comment ..

HP Assembly Part Number: 618266-001
Please note: per this HP part number, this system board does not support V2 Processors

Is the z820 motherboard the same as z800 where some wont take V2 and some will?

there's a seller from Taiwan has new Rev.3 z820 MB at same price; it should take v2 CPUs

Big price drop on V2 Z800 board, if anyone want one. @$59
http://www.ebay.com/itm/HP-Z800-WORKSTATION-SYSTEM-MOTHERBOARD-576202-001-MAIN-SYSTEM-BOARD-460838-002-/361853119728?hash=item5440206cf0:g:G-4AAOSwCEdYUBJE

For the Z800 a nice option is an Apricorn Velocity Duo PCIe card - this allows you to have the best of both worlds since you can attach 2x SATA3 SSD's to the card and use these in RAID0 (the card has a built in controller) for speeds of up to 800MB/s.

Interesting find!

Did you mean to say Z820?  As far as I know, a z800 motherboard supports LGA1366 cpus.  The Z820 supports LGA2011-1 cpus.

It's the Z800 MB, You're right about the compatible CPUs

I bought an original case z800 case/mobo with a PSU and I got everything work.  After 2 days, http://www.digikey.ca/product-detail/en/power-integrations/TOP249YN/596-1080-5-ND/865356 blew up.  I didn't even know this was possible.  Luckily, I can get another PSU, but now I'm debating of buying a regular PSU's and adapting it to the z800 mobo/case. 

I'm running 2x 5675 with 96 gb of ram, ati 7850 and 2 ssds so I think I need 850W.  Online calculators show I need 300-350W?  I'm not sure that's correct though. 

A new standard PSU is 140-180 CDN and I'm not sure if they're all compatible. 
A z800 PSU would cost me $200-$400 CDN at 1110W.   

Budget is $200 CDN

Any suggestions?

I ended up buying the barebone Z820 and a pair of E5-2670 to be my primary editing workstation.Hopefully your situation doesn't happen to mine. Fingers crossed.
Also purchasing a V3 Z800 motherboard for $80, and a pair of E5-2650 for $60-- so I can hack it into a standard case and ATX PSU, this will be a replacement to my old FreeNAS. I found some pre-made ATX-Z800 power adapter on Ebay. Hope to have all this rigged up soon.

I haven't heard any good reason to not use the engineering samples. As long as there are no critical bug fixes in the later steppings you should be fine.

I am monitoring the ebay prices of C612 chipset boards. They are still expensive and the Z820 board is not yet a bargain amongst them, plus you have to mod your case to fit it. If I were to buy right now then I'd probably get a Gigabyte MD70 or Asus Z10PE.

The E5 V3 CPUs are starting to fall in price and there's some great deals around from HK/Chinese sellers on the 12/14/16 core models. If the motherboards weren't holding their prices so well then I'd be sorely tempted myself.

Last night I was also looking at this Dell T7810 barebone, at $468 USD shipped; its motherboard supports E5 V3 and has chipset C612. ( EBay: http://www.ebay.com/itm/DELL-PRECISION-T7810-Barebone-Workstation-build-your-own-gaming-computer-/182225542500?hash=item2a6d7d1d64:g:2agAAOSwTZ1XnTYR )The downside is it only have 8 memory slots. Video encoding is CPU intensive, so I am still entertaining various options.  I am also monitoring some 12-Cores E5 V3's; I am not sure which stepping is the ones right before production release.  Thanks for pointing out the Gigabyte MD70 board & Asus Z10PE, it's quite enticing, especially with the 2x 10GbE, unfortunately it's no longer budget build :-)

Hello guys!

I was was impressed with the capabilities of the HP Z800/820  in video production. At first, I was looking on ebay for a barebone Z820 to build up.  After some Googling I came across Andy's Z800 build blog, which is amazing. Now I'm leaning toward going this route--using a Z820 motherboard and 2x E6-2670.    I saw some ES version CPUs on ebay, should I stay away from them? TIA