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I have pretty much the same setup but just 4 3080s in one machine. If you go to rent something from vast.ai, you can see the hardware specs of the most performa
by knicholes 3y ago
I have pretty much the same setup but just 4 3080s in one machine. If you go to rent something from vast.ai, you can see the hardware specs of the most performant machines. I just copied those and pieced together the rest. Learning about PCIe versions and ports was very interesting, as I thought I could use another motherboard for a similar purpose, but just because there are four PCIe 3 slots, it doesn't mean they're all usable at 16x AT THE SAME TIME!
I bought 21 R12 Aurora Alienwares and turned a side-office in my garage into a hot-ass crypto farm with two swamp coolers, four 20A circuits, a 15A circuit, and a bunch of surge protectors. I was always afraid to move something in fear that I'd overload a circuit due to the effort in calculating which power supply was powering which machine(s).
I gave away the 3080s to friends and family and kept the 6 3090s.
- deleted 3y ago[deleted]
- Havoc 3y agoSwamp coolers for electronics?
- jacquesm 3y agoPhase change based cooling, especially when combined with a natural source of low temp air (such as a large basement) can be remarkably effective. Your typical DC has much too high a power density to be able to utilize this but for a single large rig in a home it could work very well.
- eep_social 3y agoIn a dry climate the increased humidity still barely moves the needle and they’re extremely cheap to build and operate.
- nomel 3y agoConsumer electronics are designed for consumer living conditions. In many parts of the world, indoor humidity can sit over 60%, all year long. In a dry climate, you could get some significant cooling, and still be under what you'll find in my house.
- Havoc 3y agoMakes sense thanks
- knicholes 3y agoThe humidity (in Utah) in that room was like 4%. Datacenters should be between ~45 or 60-80% humidity, depending on which source you read, to prevent electrostatic discharge. It was way cheaper than installing and running a mini-split. Plus, I NEEDED the added humidity.
- keyle 3y agoI have a dumb question - what do you do with it? And why is it better to have your own hardware for it? Will you ever see positive return on investment from building this or is it feeding the nerd chute?
- jacquesm 3y ago> what do you do with it? >> crypto
- trustingtrust 3y agoQuantFinance. Money in the stock market (or crypto market but similar) is probably the only way to justify tens of thousands of dollars worth of GPUs that become obsolete quickly. The other thing I can think of is Reseach scientists who use it for research. But funded research scientists that I know generally don't get hardware to take home. They usually either get tons of cloud credits or time on a supercomputer to do their stuff.
- jacquesm 3y agoThey wrote crypto in the original comment.
- trustingtrust 3y agoAh okay missed it. So not QF. I was hoping someone does QF at home :P
- knicholes 3y agoIf my hardware can do it, point me to how I can do it! I'll give it a try and let you know how you changed my life. ;)
- wwtdtgotiatl 3y ago> tens of thousands of dollars worth of GPUs that become obsolete quickly I sold a 4yo gpu for more than I bought it for not long ago. It's the only thing in a pc that doesn't depreciate much these days, besides maybe the case.
- belter 3y agoDo you have a direct phone line to your local power company, and do you have to ask them for permission, before turning your rig on? :-)
- knicholes 3y agoWell, I can say that at $0.0875/kWh, it was a steal. I don't want to draw any conclusions about why they recently raised electricity price for everyone by 25%... But I'm suspicious that I and similar others may have contributed.