PSU power distribution problems for mining equipment – Super User

PSU power distribution problems for mining rig - Super User

I’ve built a GPU mining equipment for mining altcoin cryptocurrencies (ethereum et ofschoon) and I’m having problems with what I believe is either my PSUs or my power distribution.

  • Two x Raidmax Cobra RX-700ae 80+ Gold 700W PSUs
  • 1 x Intel Celeron G3930 Kaby Lake CPU
  • 1 x Crucial 4GB DDR4 RAM
  • 1 x Biostar 250-BTC Motherboard
  • 1 x 60GB SSD
  • 6 x PCIe Powered Risers (with USB and SATA to 6 speld cables)
  • Two x AMD Radeon RX480s (one 4GB and one 8GB)
  • Trio x AMD Radeon RX580s (all 4GB)
  • Running Windows Ten with AMD’s Crimson ReLive Beta for Blockchain Compute (patched)

The current power setup:

I’ve got one PSU feeding power to the motherboard and CPU along with the two lowest power consuming GPUs and one of the powered risers.

The remaining Two GPUs along with Trio of the powered risers are being fed power by the 2nd PSU.

PUs are using 6+Two speld cables. Powered risers are using SATA cables from the PSU connected SATA -> 6 speld adapters, which are then plugged into the riser boards.

Albeit both PSUs are rated for 700W and are 80 Plus Gold certified, I can’t seem to get the 5th GPU to work without causing problems. I’ve attempted feeding the 5th GPU and riser houtvezelplaat power from the 2nd PSU and from the 1st PSU and switching GPUs around a bit without any luck so far.

One of the PSUs will shut off, I’ll get a BSOD (blue screen of death), or some other problem occurs. Thesis generally toebijten when I embark Claymore Miner and waterput the GPUs under blast. Prior to that, the GPUs report fine. Which is why I believe this is a power kwestie somewhere.

Right now, with just the Four GPUs I’m reading 720 watts being drawn from the wall on average (using an outlet peettante) inbetween the two PSUs. This is just under what one of thesis PSUs are rated for.

Does anyone have any suggestions on what exactly the problem could be or whether I need higher rated PSUs or another PSU or if this is another problem that I am unaware of entirely? Thanks!

Both PSUs are connected to the same power unclothe, meaning they should be sharing the same outward ground.

PSU 1 is pulling about 405W and PSU Two is pulling about 315W on average.

Two Answers

After more research on various forums/sites, I wasgoed able to find a solution that has worked well so far for mij.

I read that all of the powered risers should be powered by the same PSU spil the motherboard (see diagram below). I also read that powering a portion of the risers by one PSU and the surplus by another PSU causes potential problems.

I rewired my equipment so that all the powered USB risers are being powered by my very first PSU along with the motherboard/CPU/etc and only powering the GPUs by the 2nd PSU.

After making this switch, my equipment now works. No hardware errors, no PSU shutdown, no BSOD, and I’ve bot mining for overheen Nineteen hours with no issues so far. PSU 1 is drawing just overheen 300W from the power strook and PSU Two is drawing just overheen 400W from the power strook.

Just because a PSU has a specific rating, it doesn’t mean it can all be drawn out of a single, or even a pair, of outputs.

Thesis are designed to have a 700 watt blast distributed inbetween all the various outputs, not just 1 or Two. If you had butt-plug adapters to go from SATA to PCIe power connectors (not that I know if they make them), you would most likely be better off with a single PSU that can more than serve all your power than numerous PSUs. You would most likely also need numerous +12v spoorlijn to support this setup.

Numerous PSUs have the potential to have ground loops, which I don’t think the average PSU is designed to treat. Server PSUs, very likely, but not your average desktop PSU.

You are very likely witnessing the shutdown of 1 PSU because it’s eyeing an unevenly balanced draw, and a circuit protection might be coming into play. Or it might just be that you are attempting to draw too much power out of the GPU circuits and it’s shutting down spil a fail safe.

What you are attempting to do is certainly not a standard setup, and while I think it could be accomplished, I don’t think what you have is fairly the right configuration, yet. Throwing more PSUs at it might or might not work, but generally Smooch.

EDIT: I did a search on Amazon, and they have SATA to 6 speld PCIE power adapters, even te a Five pack.

Also, I left behind to mention that bitcoin mining is hard on equipment, plus PSUs lose power rating overheen time. Along with that, the lower procent of the total capacity of the PSU you are using, the more efficient and longer lasting the PSU will be. Eg: a 700 watt PSU with a 675 watt stream will be less efficient and have a much shorter life than a 900 watt PSU with the same stream, even if they have the same efficiency rating, spil long spil they have similar quality of components.

With the power draw and the hitting this equipment is going to take, a very large PSU (spil ter overheen 1000 watts) would be recommended. A large PSU like that may have thicker gauge wire on it’s outputs, which will help ter several ways, and it should have better components, so the stress it’ll be under will be treated better.

Related movie: Totally Wrong brief – Earth-Chan

Leave a Reply

Your email address will not be published. Required fields are marked *