Topic: Gauging interest around some custom hardware and cabling for GPU rigs - page 5. (Read 6181 times)

edited my previous post..

actually it is perfect for my rig with 4x pcie, a 2kw psu can handle 4x 390/390x or 490/490x (when released) at full power.

i just want to assemble and simulate everything in my mind before making a decision.

Sounds like you don't want it. That's okay. Can I get opinions from the other side?

a stepdown? i didn't know dps2000 dont have 5v

voltage mismatch? i haven't encountered that for 2 and 1/2  years wiith gpu mining.

it's not that i'm just about saving a few bucks, its about component (pico atx, stepdown) availability in my location too..i know someone in the US where the dps2000 with breakout and wires  can be shipped, and before the year ends it will be sent to me (to my country)

in my mind, for troubleshooting power, 1st psu is all about booting the os and dps2000 is all about the gpus. thats it (assuming the new breakout will cater for the 5v for the molex)

the all in one dps2000 solution is still not all in one in my mind in troubleshooting power, it is basically 3, the pico atx, stepdown, and the psu itself.

EDIT: i googled dps2000 only have 0.1A for 5v so a stepdown is necessary

Actually, it's still a stepdown - it's just all integrated and sized appropriately.  In order to have it compatible with any of the server PSU's, it basically needs to be 12v.  Really I wanted something that would make it dead simple to run the risers and clean up the cable mess, and sidehack already had a design in the works that met this need.

The problem you have with mixing and matching PSU's is that you could introduce all sorts of issue related to voltage mismatches - it's really why I wanted to have a single solution anyway.  Ultimately if sidehack does make the kind of miner equivalent of the pico ATX, it's really geared to be high quality and reliable at a good price, probably not the cheapest solution.  That's where my interests are - what's the point of jeopardizing $2k worth of hardware just to save $10 or $20 bucks - I want my base system to be rock solid, so as I swap out cards, I never need to mess with it.

great, waiting to see that new breakout with 5v, that step down complicates things and adds to expenses. just harness the 5v from the PSU.

as for the motherboard/cpu power, I'd rather use some surplus good quality, low power psu to supply the hdd, and some fans. they can be bought less than half the price of 24pin Pico ATX switch you posted up thread.

Right now the power comes from the 12v supply of the breakout from the PSU, and from the 5v step-down converter to the right of the PSU.  It's kind of a clunky setup, and Sidehack is working on a board which will take the 12v from the breakout and break it out to the 12v and 5v that the molex needs - it should be great and really clean things up.

where is the molex for powered riser getting its power? from the breakout board?

I don't have anything for the DPS2000 right now, but I have an HP Common Slot board (which has PSUs from about 500 to 1500W Platinum) with 12 PCIe jacks.

All I have for GPU-rig-specific hardware right now is cables. The 4-Molex conversion boards are still in prototype. MarkAz specifically requested ATX24 conversion boards so he might get dibs on that depending on how everything works out, but I'll try and build 'em one way or another.

Are you able to elaborate on your set-up a bit more? Is that a custom case? Prices for each set-up and whatnot. Very clean and fancy looking!

@sidehack

I would be interested in these boards! I have hosted miners and done business with sidehack and can vouch for his services and products.

In my build I used GPU riser boards - but those need molex power, and sidehack made custom cables for me to take care of it (that's what he's talking about in this post).  The 6-pin's are just your run of the mill 6-pin PCIe cables, but I had him make much shorter ones since in my build the GPU's are close to the PSU.  Finally, he also makes a 6-pin PCIe cable to 8-pin PCIe - the reality is he's using 16 AWG cable, and Optimizer's DPS-2000BB breakout can easily support the load, we're talking more about the connector max amp load instead of the ATX standard max amp load.

So in the end you have a safer (high quality cables, known power limitations), cleaner (correct length cables), cheaper (server PSU+breakout much less than commercial) and more efficient (server PSU typically platinum at least) setup - just buy the parts from Sidehack already, you won't be disappointed! 

Connecting DPS- 2000BB in GPU ?

What did use?

Here's the exact one that I use:

http://amzn.to/2b1KiAG

The important thing to consider is that this only powers the MB and SSD, not the riser boards - you'll also need a 6-pin PCIe to 8-pin ATX plug on the MB.  For the risers, Sidehack is making a board which I think will be awesome for them, basically giving several +12/+5 molex plugs that can easily handle the load of even demanding cards like the RX 480 (demanding on the molex side).

Using a server-PSU and a setup with a bunch of Sidehack's cables is the way to go - no comparison to some consumer-grade PSU with poor AWG wires.

How do you power the 24 pin socket on the motherboard with that PSU.

I have 1 not used for the btc antminers so it would be great if that could power my next rig.

Thanks

Correct - whichever card is designated the primary video card, I put a dummy plug in it to ensure that Windows boots smoothly (some of the ASRock's had problems, so it's worth the $20 to not have any).  I run TightVNC on it, so I just remote in with that and do anything I need - works like a champ, although I really don't do a whole lot of tweaking once the machine is up and running.


Thanks!  I always enjoy designing and tweaking the cases - plus with the GPU side of things, if you spend the time to nail the case, it just makes everything a whole lot easier in the long run.  The cost of the case is obviously more than the light weight ones on here, but it's also ensures that 100% of the fan airflow is used for cooling, which is important to me.  I also like having things mounted securely - this case could fall off the rack and I doubt anything would happen to it.

This is currently my v3 rev of the case - and I'm just finalizing the v4 to incorporate some of the things that Sidehack mentioned above.  The reason the build is coming together as cleanly as it is, is all thanks to cables that Sidehack has made for me.


Yeah, I have about 100x DPS-2000BB's lying around, so I use them like candy.    Right now I'm just using the one cooled by the fans - you'd be surprised how well that works, but the PSU does get warm.  I use Optimizer's breakout board for it (the best one I've used), and I'm looking forward to getting his 4k boards when they're available - that will probably be the final update I make as part of the v4 rev of the case.  While It's far more power per case than I need, he says he's tested it without active cooling at 2k and it works great - so that way I would get redundancy AND even better temperature performance.

Never played with the 2500's, but assuming they're the same as the 2000's but just with an extra 500w, they'd be an excellent supply to use.  Right now my heaviest power 6 GPU system is close to 1800w, and really I don't see things ever going much beyond that.  2000w still gives me a bit of headroom (especially considering these are server grade PSU's), but 2500w would be ideal...

And the next one I build will be for the GPU's I just bought from you, so you know they're going to a good home...

mark you have a plug in one card it is an hdmi socket.  What does that plug do?  is it just a dummy plug?  I am asking because how do you see the cards on a screen to adjust them.

Nice clean build.  I wish my gear looked that way.

I have had a lot of gear from sidehack  it works well.



I have  spare  dps-2500 units   which are a step above  dps-2000 units.

I would love to use one or two of them.

It looks to me like you have a dps-2000 running your build.

I've been buying cables from sidehack and they're top notch - MUCH better than anything else you can find elsewhere.  Plus it gives you the opportunity to really clean up the internal wiring - here's some of my latest machines running some of sidehack's work:

You mentioned PCIe splitters?


I've seen cards where an extra power connector is added even though the TDP does not even surpass a single 8-pin + PCIe demands. This makes those cards unfavorable since they would require more wires and result in needing more PSU units in a rig. And it is a shame to pass up a card with extra power phases

I think it would be usefull.

I would say a package to power 6 risers, hard drive, CPU and MB would be and immediate sell for me and most likely others wanting to use server psu's. I have 30+ of the DPS-2000 PSUs and would prefer to use those for my rigs if possible. Can you PM me a ballpark price for x6 of these "kits"