Greetings one and all!
My name is Ender, long long time lurker, first time poster.
I was introduced to the modding community many years ago by a previously very active member, colleague and very close friend who went by Langer. Unfortunately he passed away a few years ago and left a big hole in everyone's lives. Some of you may remember his PrometheusCU and Helios case mods, among others.
I still work and operate the company once founded by Langer -Society Inc- and we're still working on a bunch of very cool tech projects. One of our projects requires TWO very serious PCs for the development of a next generation type VR/AR headset akin to what you may have seen from Hololens/MagicLeap/GoogleGlass.I'm going to be doing a project log in the coming months reviving Langer's Helios case mod
... a little homage to my old buddy. I've worked with his family to get some very similar 8mm thick carbon panels, like those used in his project log years ago. I've updated and improved his drawings and designs. As well, I've ordered all the hardware already... and I'm at over $60,000cad into this project now already.
The hardware list of the two machines is as follows, The First is going to be pretty standard in terms of it's construction and will live in a rackmount case, very little modding here:
x1 - Asus - Z10PE-D8 WS Motherboard
x2 - Intel Xeon - E5-2687 V3 Processors
x8 - Kingston - 16GB ECC DDR4 RAM Stick
x3 - Evga - Titan Z 12GB Graphics
x1 - Samsung - SM951 256GB M2 Drive
x8 - HGST - HE8 8TB HardDrives
x1 - Asus - PCE-AC68 Wificard
x1 - Asus - Xonar Essence Soundcard
x1 - Evga - 1600w Titanium PSU
x1 - Case - Rugged Rackmount
The second is going to be something pretty special, and will be the topic of discussion with my questions further below:
x01 - Asus - Z10PE-D8 WS Motherboard [130w]
x02 - Intel Xeon - E5-2690 V3 Processors [300w]
x08 - Kingston - 16GB ECC DDR4 RAM Stick [36w]
x03 - Radeon - R9 Dual Fury X 8GB [unreleased] Graphics [1600w]
x01 - Samsung - SM951 256GB M2 Drive [5w]
x08 - Corsair - Neutron XT 960GB SSDs [50w]
x01 - Asus - PCE-AC68 Wificard [15w?]
x01 - RME - HDSPE AIO Soundcard [20w?]
x02 - Supermicro - PWS-2K04A-1R 2KW Power Supplies [2000w out]
x01 - Turemetal - TL240 240W PICO ATX Power Supply [240w out]
x12 - Noctua NF-A14 Industrial PPC-3000 Fans [100w incl pumps]
x01 - VERY CUSTOM Case, lots of Watercooling.
total - ~2256w under absolute max load (likely more ~1750watt under heavy operating load)
I've opted to use two rackmount 1U server style hot-swap power supplies, in this case they deliver 2000w at 230v, (1000w at 120v), of 12v power, rated 80+ titanium.
They look a little like this: http://i.imgur.com/xl3AgwC.jpg
(note that there are no wires, these PSUs use 'gold finger connections')
SO this brings me to my specific system, I've drawn a rough map below:
Here's a little Langer inspired teaser, a totally updated and revised Helios mod plan in keeping with his aesthetic style:
This is just a little taste, but communicates the parts layout well enough, the long pink rectangles in the bottom are the Supermicro PSUs. Note that in total we have only 10 wires going to the motherboard and GPUs for power. Also all the connections for power (and data) are built right into the chassis for total modularity.
As you can see I want to run the two 2kw 12v PSUs in parallel, which will drive the various 12v components of the build.
They also power a very small 240w DC-DC ATX power supply that will provide the various voltages for the motherboard, as well as the necessary 5V for the SSD Sata drives.
The order of business here is wire reduction, I plan on eliminating the normally standard ~167 wires needed to power all my gear and cooling down to just 30wires.
1) I haven't had anyone say anything to the contrary as yet in regards to bridging like wires. For example, the 24pin ATX connector only consists of 8 different connections... if the necessary current is provided for is there any reason I cant just jump all the connections throughout the built and minimize the wire count (as shown in my diagram)?
2) Same goes with the 6x and 8x pin 12V connections on the motherboard, I would like to jump all these together and run just 2x wires from the PSU. In the case of the 12v GPU power lines, I've seen the 2-wire mod done before: http://imgur.com/a/LEG2L
Full build log here: http://community.thermaltake.com/index.php?/topic/1426-australia-stuart-tonks/
3) I know almost nothing about these server style power supply units, there's a great about them that's still a mystery to me. I've reached out to Supermicro, who asked me to sign an NDA in exchange for some documentation... but I found very few answers to the deeper question. I see a lot of reference to current sharing in one document, and there is a loadshare pin (ishare) as well as a wake-up bus pin that seem to be related to this but can be ignored, can anyone help me better organize the necessary circuit and connections to make this work?
I got some feedback from reddit that tells me ishare simply needs to be joined on each psu, and I've seen a vague wire diagram that eludes that wake-up-bus works the same (although I suspect wake-upbus requires some additional circuitry between each psu).
4) In the case of the +5v standby out from the Supermicro units, it's my thinking that i should bridge these lines and run the current to the motherboard; ignoring the 5Vsb from the Pico PSU. Same goes with the DCGOOD wire, I'm thinking that I should bridge and run it to the motherboard as well, in place of the pico.
Please take a look at my diagram above, let me know if I've done anything glaringly wrong... I'm sure I have, as I mentioned I have no idea how to force a current sharing situation with these units so it's all guesswork. Any little bit of input would no doubt be of huge help!
Thanks in advance.