If the Canadian Dollar wasn't so sucky right now, 1700usd per would be fair. That's $2150CAD  Plus Shipping... |
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The breakout boards do seem very interesting, but are expensive for what they do Thought about having pcb's made, doing my own. Still considering it  I don't want to clutter the OP's excellent thread (or over-shadow all the compliments rolling in about chicago's girlfriend  ) so I respectfully won't post after this. Expensive compared to what? For large deployment, the difference in price versus off-the-shelf ATX PSU's (even without factoring in the higher efficiency rating) is huge. You can buy a 2880W PSU, breakout board and cables for less than 1 EVGA 1300W G2, and have higher efficiency rating (as well as over 2x the power). If you mean they are expensive versus wiring it up yourself, I personally think they are good value. I have modified MANY smaller 1 kW DPS 800GBA PSU's in the past, and it was at least an hour of work per PSU (with only 4x PCI cables per PSU, not 20+). With 3,000 Watts of AC power, if you go without a PCB you have some serious soldering to do. If you do get your own PCB made up (and essentially your own breakout board), you have to source out the proprietary connectors, which at this point J4bberwock has been waiting on for around 2 months at the factory. They are not cheap, but they do represent a lot of value IMO. /shameless plugs Well, for the psu I'm buying, I found the connectors in Canada for $10 a piece. Was quick. But I can se the plus and minus to the boards. I may still jump and buy 10, but it's a large chunk on my ROI list. |
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blade psu's are very capable ones although i see this are very slim models.
The IBM BB psu's are much bigger but often lack cooling but can cope with insane loads
These are made to be cooled by the airflow in the blade servers, a mate and i tested the max load which is a 2800 watt IBM Blade PSU (2980 W - IBM BladeCenter H (7989, 8852)) could handle
We stopped at about 3500 watt load because going higher would be no longer safe, at this extreme load it becomes a huge risk and fire hazard.
But the psu did not even fail once.
These need some adjustments to get them cooled and you need to get the cables soldered, or try to get some tech wiz to create a breakout box for these monsters
Side note when we turned it on the lamps in barn dimmed, so these are not for the faint hearted.
DO NOT USE these without making sure everything can handle these loads.
The 2880W Bladecenter PSU's are quite amazing. I currently have 3x SP20's hooked up to one at approx 1500 GH/s each, and it is drawing 13.41 amps at the wall w/ an ammeter. Over 3,000 watts and holding steady for well over a week now. But, if anyone thinks the SP20 fans are loud @ 100%, wait till you hear the fans on these bad boys  . I will be distributing J4bberwock's IBM 2880W breakout boards for North America. Should receive my initial order in about 2-3 weeks now, will create a thread at that time. You won't find 80+ Platinum rated power for cheaper, that is for sure. And it beats the heck out of trying to rig up your own fans on the 2000W server PSU's. The breakout boards do seem very interesting, but are expensive for what they do Thought about having pcb's made, doing my own. Still considering it |
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The voltage and draw on the SP20, is 3280ish watts per plug or per pin? Trying to see what 14awg wire will handle 14 awg will handle more than the pins or connectors Housing them. Well, I was more interested in having the pins come out on 16awg for a few inches, than having the three splice together into a single line. of a heavier awg. |
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The voltage and draw on the SP20, is 3280ish watts per plug or per pin? Trying to see what 14awg wire will handle |
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... I think he is meaning population...
Overwhelmingly, the Northern Hemisphere has the greater population.
Northern Hemisphere: 88-90% of the population
Southern Hemisphere: 10-12% of the population
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I can sell you some, PM me
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I've gotten these before, solid. I'm an aircraft electrician, so figured, I'd buy the materials a nd build them. After wiring a single S3+ I said screw it, wasn't worth my time. Wish you would offer some cooler wire  Maybe some of the UV stuff, Really pimp out the server room  |
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I now have 6 for sale hit me up if you still need this.
Yeah it's odd how he spreads around, I can move 50BTC in a day if he wanted, and rate's are negotiable if he has better offers. But he seems to be looking for other people constantly. I do enjoy the RBC client transfers. But only with established people. |
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Two months is an awfully short time to expect to ROI with mining equipment. If you could go up some then I would have a single S3 to sell you. Otherwise it is still profitable for me to continue using (pics and proof of mining can be provided upon receipt of serious interest)
How much do you want for the S3? I can ship you s3+ have a bunch. I sent you a PM. I hope you are located in Canada Not sure what to sell them at now that I think about it, hardwares cheap now, but if bitcoin jumps, they will sell for gold |
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I just ordered 6 SP20 direct from them, for $3050 CAD.
That's nearly 10T/Hash
So I'd agree $1500-1700 is about all he is going to see, and that's CAD.
Especially for used gear, which could of been run over clocked for the last how many months.
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Nope. This will be a HUGE mistake if done. One can source 10-20-50 PSUs, but how about a few thousand of PSUs? We're out of stock on the SP35.
So next gen soon? Use a built in psu that's common like the dps2000, and ship without them? let us buy our own, Big savings there Maybe, but the option could be given. I for one own a number of power supplies, so paying $800 more for the sp30 to get new PSU, and the extra shipping weight? Be a nice savings point |
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Wow... a free miner for 'that? Call that a review? funny
Agreed I'd do a ay better review for a miner |
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We're out of stock on the SP35.
So next gen soon? Use a built in psu that's common like the dps2000, and ship without them? let us buy our own, Big savings there |
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Nothing exists. love to see on my screen, hash rate, pending, payout, etc. Can anyone do this? Can't be that hard, very few apps exist |
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Two months is an awfully short time to expect to ROI with mining equipment. If you could go up some then I would have a single S3 to sell you. Otherwise it is still profitable for me to continue using (pics and proof of mining can be provided upon receipt of serious interest)
How much do you want for the S3? I can ship you s3+ have a bunch. |
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I'd like to point out you can buy brand new SP31s from the Spondoolie's site for $2,075 + shipping.
M
Yah... your prices are crazy for used sorry |
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Please explain, WHY are we still using PCIe connectors? Why not give terminal points, insert wire and secure, Let me run 8awg wire straight in, less wire. Time we move away from crappy pcie a better question would be WHY should anyone gives a shit about home mining. The industry has already moved away from bunch of PSU lying around with wires everywhere. SP20 is the last home miner. Look at SP10-SP3x. Not a single wire, all straight from PCB. Agreed, that being said, why can't both be offered? a few 40amp terminals on the back as well would be nice. Building pcie cables is a pain in the ass, especially for larger gauge, |
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Can anyone tell if the dps2000 has 4 independent rails on the back, or are they the same rail, with 4 out puts? balancing is an issue I'm a bit worried about Thanks. It's a single 12 volt rail. Thank you! That means I can just solder the wires together across the four, than breakout form there. makes balancing much easier The plugs are in town, fedex says today or tomorrow |
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Can anyone tell if the dps2000 has 4 independent rails on the back, or are they the same rail, with 4 out puts? balancing is an issue I'm a bit worried about Thanks. |
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