Anyone Mining using regular silent pc for long term mining ?

[Wotan Wipeout]

Most of my rigs are watercooled. Including 3070s and 3080s.
Old Stuff 1080s / 1080tis / 2080s too.
If you want to keep it very quiet you will need lots of radiators.
Or you put the radiators outside.

[Commie]

Most of my rigs are watercooled. Including 3070s and 3080s.
Old Stuff 1080s / 1080tis / 2080s too.
If you want to keep it very quiet you will need lots of radiators.
Or you put the radiators outside.

I've just started compiling this rig, only 3 3080s so far. I was calculating radiators basing on 240mm for each card with fans on one side only, sure that will be enough? Also, I can put radiators outside but that'll require additional ~3-4 m of tubing with about 1m elevation. Distilled water+10% antifreeze (as biocide and anti-rust agent) as a coolant, waterblocks connected in parallel. Not sure if 2 pumps will be enough for such a setup. Any advice?

[philipma1957]

I'm surprised no one mentioned watercooling yet. I am waiting for gear to convert my 3080s to watercooled ones, hope this will allow me to lower mem temps at least 10C.

Hard to get a new hybrid from evga.

But if I do I will put them in a back room of a barbershop.

I would do 1 hybrid 3080 per rig.

Very likely i will never.get access to these cards

I chose custom ekwb blocks, 7 card rig should come out quite nice and quiet. If I had 3090s I'd consider adding watercooled backplates to them as well.

I had them with soft tube and they leaked.

[Wotan Wipeout]

I had never a leaking softtube. But i use only https://geizhals.de/ek-water-blocks-ek-tube-zmt-schlauch-a1091953.html?v=k&hloc=de.

[philipma1957]

I had never a leaking softtube. But i use only https://geizhals.de/ek-water-blocks-ek-tube-zmt-schlauch-a1091953.html?v=k&hloc=de.

they look nice.

[Commie]

I had never a leaking softtube. But i use only https://geizhals.de/ek-water-blocks-ek-tube-zmt-schlauch-a1091953.html?v=k&hloc=de.

Same tubes I ordered.

[Wotan Wipeout]

The question is not how to cool. Its how much noise you want.
I run 4 x 3080 Suprim X on 1 x 360 Radiator. With Kaze 3000 Fans.
https://geizhals.de/alphacool-nexxxos-monsta-360-white-special-edition-35435-14193-a901781.html?v=k&hloc=de

This keeps the 3080s under 60 degrees. If you want it quieter you should go for 2 Rads with other
Fans. I prefer bigger fans - 38mm - to get more pressure.
I can run the 3080 Suprim X on 110 Mhs ETH, watercooled.

For the CPU i have

https://geizhals.de/arctic-alpine-12-passive-acalp00024a-a1871633.html?t=alle&plz=&va=b&vl=de&hloc=de&v=k#offerlist

So only 3 fans overall.

I run Corsair AX 1500i with it. But for more 3080s you should go for a mining power supply.
Dont forget to use PCI-E Risers! Molex will be overloaded if you connect more than 1.
My 3080s take around 44 Watt of the PCI-E.
I use a quad sli board and 1 pump. So overall its very compact.

You can check the power usage of the PCI-E with HW-info! (and you should do it ...)



Overall 1.1kw for 440 MHs/s ETH. 3070s are better but you need more.

[Commie]

The question is not how to cool. Its how much noise you want.
I run 4 x 3080 Suprim X on 1 x 360 Radiator. With Kaze 3000 Fans.
https://geizhals.de/alphacool-nexxxos-monsta-360-white-special-edition-35435-14193-a901781.html?v=k&hloc=de

This keeps the 3080s under 60 degrees. If you want it quieter you should go for 2 Rads with other
Fans. I prefer bigger fans - 38mm - to get more pressure.
I can run the 3080 Suprim X on 110 Mhs ETH, watercooled.

For the CPU i have

https://geizhals.de/arctic-alpine-12-passive-acalp00024a-a1871633.html?t=alle&plz=&va=b&vl=de&hloc=de&v=k#offerlist

So only 3 fans overall.

I run Corsair AX 1500i with it. But for more 3080s you should go for a mining power supply.
Dont forget to use PCI-E Risers! Molex will be overloaded if you connect more than 1.
My 3080s take around 44 Watt of the PCI-E.
I use a quad sli board and 1 pump. So overall its very compact.

You can check the power usage of the PCI-E with HW-info! (and you should do it ...)



Overall 1.1kw for 440 MHs/s ETH. 3070s are better but you need more.

Thanks for the info.
What are your fan speeds and mem temperature readings? With air cooling I never managed to get memory temperatures below 80C, getting 101-102 Mh/s. This rig (when fully  complete) will be running on 2x1300W EVGA PSUs just because I have them, next one will be on server power supply again. Instead of quad sli boards I chose a ek-pro manifold, can hook all 7 cards to it.

PS For years I use Molex with my risers, 2-3 per cable. No issues whatsoever.

[Wotan Wipeout]

Fan speed is always full power. Mem temperature depends on water temp. When it was
very hot here in germany i was over 100. But never throttled.
Have the EK-Pro manifold here too. But was afraid of the throughput.
When you have lets say 70 L per minute and you connect 7 GPUs you have only 10 L per GPU.
Because i use server rigs i stayed with 4 for safety.
If i were you i would use https://geizhals.de/ek-water-blocks-ek-xtop-revo-dual-d5-pwm-serial-a1351867.html?v=k&hloc=de for 7 GPUs. Ohterwise could lead into problems.
I put always 2 GPUs on 1 Molex row. But can only tell to avoid this on the 3080.
Because i have Suprim X i needed a lot of PCI-E. These have 3 x 8 PIN.
I love it compact and 7 or more really call for trouble. 1 Suprim X can take up to 440 Watt on
other algos. And who knows what comes in the future...

For 7 GPUs you need over 2000 Watt power supply for ETH.
Running such a beast on mtp needs up to 3100 watt just for the gpus.

Dont forget to send some pics.
I really liked to build my 3080 rig.

Dont forget to buy a bunch of

https://geizhals.de/alphacool-eiszapfen-g1-4-schnellverschluss-mit-schottverschraubung-17367-a1697375.html

these help much.

[Commie]

Fan speed is always full power. Mem temperature depends on water temp. When it was
very hot here in germany i was over 100. But never throttled.
Have the EK-Pro manifold here too. But was afraid of the throughput.
When you have lets say 70 L per minute and you connect 7 GPUs you have only 10 L per GPU.
Because i use server rigs i stayed with 4 for safety.

Building it card by card will allow me to collect enough data for comparation - temperatures, flow etc. So by the time I buy 4th card I will already see (hopefully LOL) bottlenecks and ways to overcome them. Like, at the start I will have 420mm radiator with 3x140mm fans cooling 3 cards, if I don't like the temperatures I'll connect a spare 240mm rad I already have and see what changes, etc.

If i were you i would use https://geizhals.de/ek-water-blocks-ek-xtop-revo-dual-d5-pwm-serial-a1351867.html?v=k&hloc=de for 7 GPUs. Ohterwise could lead into problems.

Duly noted, thanks.

I put always 2 GPUs on 1 Molex row. But can only tell to avoid this on the 3080.
Because i have Suprim X i needed a lot of PCI-E. These have 3 x 8 PIN.
I love it compact and 7 or more really call for trouble. 1 Suprim X can take up to 440 Watt on
other algos. And who knows what comes in the future...

For 7 GPUs you need over 2000 Watt power supply for ETH.
Running such a beast on mtp needs up to 3100 watt just for the gpus.

Just checked (more out of curiosity as I know my cabling is okay). Connectors on both sides aren't even warm.

Dont forget to send some pics.
I really liked to build my 3080 rig.

Sure will, once I finish it. Or I might start a topic when all watercooling stuff arrives and I equip 3 cards I currently have, then report progress as I go. It would be really interesting to see pictures of your rig too, especially with comments on various components etc. Probably as a separate topic, too.

Dont forget to buy a bunch of

https://geizhals.de/alphacool-eiszapfen-g1-4-schnellverschluss-mit-schottverschraubung-17367-a1697375.html

these help much.

I bought these  - https://koolance.com/qd3-ms10x16-bk-quick-disconnect-no-spill-coupling-male-for-10mm-x-16mm-3-8in-x-5-8in-black (there are matching female connectors too, of course). This was my first concern - I wanted each card to be serviceable without the need to dismantle the entire system. Yes, these couplings are great.