Messages

I know it Marco, but I'm in a context to be pressed by time 
The HP Z800 was my first goal but finally when I see the barrier to have a full stable system... It's for my society, not for me, so...
I'm pretty sure that with a correct flash etc I have chance to work with my dual Xeon 5670 and my 48Gb ECC RAM, but the doubt is still here. And even cheap (I known it) the Xeon 55xx will take time to come. :/

As you said with the Supermicro MBD-X8DAH-F-B, there is no hack and the full price (inclu taxes and shipment) was 210â,¬, so cheap, and the same as HP Z800. Re-buy, re-sell, it's a "white operation" at the end 

The board:
http://www.rdrelectronics.com/russ/apr14/cpu1.JPG

Cheers

I highly doubt that board is SLI certified so you will not be able to run three 780 ti connected to one another.

Pretty sure the hyperthreading issue was in windows 10. It may have been fixed with an update. Definitely not related to hardware.

I ran the early tech previews with no problems at all.

BTW If people are looking for easy to install aftermarket CPU coolers, the coolermaster hyper t4 requires no modification. The screws go directly in the current plate for the CPU. I will be posting picture of my rig soon.

Did you sort your hyperthreading issue out? I'll be eligible for the free upgrade to Win10 when it comes out and would like to know there's a smooth path ahead.

Hyperthreading issues? I've been running 12C/24T since day one with zero issues

only quick info for all original Z800 users, successfully running 2x X5687 + 2x R9 290 OC with stock 1110W PSU (no additional psu needed).

power to GPUs
V-G1 6pin -> 8pin
V-G2 6pin -> 8pin
1x molex -> 6pin
1x modified CPU power cable -> 6pin (1x +12 CPU0  1x +12 CPU1)
(Obsidian Series 800D 8-Pin Motherboard Power Extension Cable Corsair CC800D-8PIN)

all stable

quick info:

i was searching for max power output thought 6pin GPU connector and i find this pdf
http://www.nvidia.com/content/quadro/maximus/di-06471-001_v02.pdf
where they use  6-pin to 8-pin adaptors for tesla and quadro fx5xxx in Z800

because i want to try SLI GTX980 and dont want case full of molex conversion cables

Z800 board is not GeForce SLI certified so you will need to use an SLI hack to make it work. I did this back in the day on an Asus P5Q-E board. As far as powering them if you're using the standard Z800 case you can run dual 5.25" drive-bay PSUs (1 for each GPU) I'm doing this for my dual AMD R9 280X set up as Crossfire requires no certification. Here is a picture of my set up:

Can you share pictures of your custom cable and how you have it connected?

There must be something wrong with your fans as my Z800 is nearly silent but you can get speedfan working by going into advanced settings and selecting the controller. It doesnt work great but you can definitely quiet them down

Hello can one of you measure your motherboard for me? I'm thinking about migrating my Z800 into a Corsair 900D and I need to know if the board will fit the tray. Thanks!

36x33cm.

Remember that the PCIe slots need to line up with the case slot fixings as well.



I just took a look at the 900D and I thought my DS6 was big - the 900D is enormous!

Yup I know. Thanks for measuring! It should fit as it's somewhat smaller than the SR-2 board from EVGA that's HPTX. Hoping they'll be material to drill standoffs in. Going to water cool both processors and go for a quad 280X set up using pcie ribbon extensions to drop the cards down a slot since the 900D has 10 expansion slots bs the Z800s 7

Hello can one of you measure your motherboard for me? I'm thinking about migrating my Z800 into a Corsair 900D and I need to know if the board will fit the tray. Thanks!

Progress made - I'm out of the box and into a case. More pics uploaded.
But cannot install Windows 8.1 Pro with WMC. I use WMC w/ ServerWMC and Mediabrowser 2 to stream TV to devices. I like WMC best out of all media centres. The laptop that I had this on was Celeron level with 4GB RAM that couldn't keep up so the purpose of this HP Z800 build was firstly to use this as the TV server with 2+ HD streams, secondly as my RTL-SDR twin trunking decoder box streamer, scanner streamer, flight tracker(7 RTL-SDR USB devices), thirdly as a desktop with some VMs.

Is it that 8.1 Pro w/WMC doesn't like 24GB or it doesn't like the two Xeons?

Im running 8.1 Pro WMC with zero issues

6-32 screws thread right in. That is what I have holding my noctua coolers in place

quick info:

i was searching for max power output thought 6pin GPU connector and i find this pdf
http://www.nvidia.com/content/quadro/maximus/di-06471-001_v02.pdf
where they use  6-pin to 8-pin adaptors for tesla and quadro fx5xxx in Z800

because i want to try SLI GTX980 and dont want case full of molex conversion cables

Z800 board is not GeForce SLI certified so you will need to use an SLI hack to make it work. I did this back in the day on an Asus P5Q-E board. As far as powering them if you're using the standard Z800 case you can run dual 5.25" drive-bay PSUs (1 for each GPU) I'm doing this for my dual AMD R9 280X set up as Crossfire requires no certification. Here is a picture of my set up:

Hi Andy and everyone who love the way we hack z800.

From my last post, I try to use intel E5520 to boost in bios and hoping to upgrade for xeon x5650 but no avail.
I use dual power (800w and 650w) and mod cable as Andy's instruction. When I start, power is on, Video Card is on, but I couldn't boost in bios. Nothing on my screen. I just boost in bios 1 times, but system shut down after 2 minute.

@Andy: Do you have any idea for this problem?

HEre is my video: http://youtu.be/XivKqJJzofQ

Please put a heatsink on that porocessor

Don't forget to check out HP Performance Advisor for in-depth information on your machine and this cool graphic 
http://i.imgur.com/BpxTp1r.jpg

I also added USB 3.0 to my build with a PCIe card that has a USB3 header on it. That and a 5.25" hot swap bay (1 2.5" drive and 1 3.5" drive + 2 USB 3.0 Ports)

Hi Jon and welcome to the forum. It's quite densely packed inside the official case isn't it? I see you've replaced the official CPU heatsink/fans with some nice looking replacements as well.

You certainly get your parts for great prices in the US. My total cost exc. storage/graphics is about GBP 800 (2x X5680, board, case, PSU, 48Gb RAM). It's the VAT (20%) and import duties that hurt us over here.

Not actually, there is room for 2 more expansion slots to be filled (which I'll be adding USB 3.0) and I just cleaned up the wiring some. I replaced the heatsinks with noctua units and had to but different screws so they would thread into the HP back-plates. works great though and still super quiet. Also the two drive bay power supplies I have keep the system running under heavy 3D load so it does not shut off like you were experiencing. These are just glorified 7970s.

I just did a build with one of these! Picked up the Z800 with 1100w PSU and 5660 for $400 USD. 2x Xeon X5680's for 400USD. 12GB of RAM I already had and 2x AMD R9 280X GPUs for gaming!