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...today after i restarted one of them after tweaking voltage,yellow and green lights didnt light up at all,so after alot of differenet tries to recover it with switching power cords,restarting,sd card rebooting,and so on,i concluded that my controller board on top of the miner has probably gone.So i replaced this board with other from different miner,lights are up and miner starts normally,so my question is can this controller be repaired or i shouldnt bother...
This is going to sound crazy, but I have one miner which behaves exactly like this after every power outage (fan spins and Ethernet link lights, but no yellow/green miner LEDs light and it just sits there doing nothing). I managed to get mine working again with a hair dryer. Chances are it will not work for you, but it can't hurt to try: 1) You will probably need to use a SD boot card (not recovery) 2) Before powering up the miner heat it up with a hair dryer on the high setting for 60 seconds (blowing it into the air intake is fine) I've done this with mine three times now and each time it started right up. Like I said, it can't hurt to try it. Whoa ... this morning I had a ethernet switch problem and none of the mining gear could connect. When I fixed the problem almost all of my SP20's were exhibiting the "no lights but ethernet problem" and refused to boot. Repeated power cycles, waiting, power supply swapping, even disassembly and cleaning .. nothing worked. However I found this post ... tried it out ... I almost couldn't believe it ... it worked for every single machine ... wtf! I've had these machines since January ... I certainly don't recall this being a problem back then. Actually come to think about it ... maybe it was a problem, I have had some odd "doesn't want to start" problems in past that have all "magically" resolved themselves. Perhaps it has been this heat issue the entire time? |
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UDPATE: AUCTION ENDS 06/08/2015 @ 11:59:59 PM PDT
Just a reminder auction ends tomorrow evening! |
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I am kind of lost on your post. Unless you give us a price how do you expect anyone to host with you?
If you want to keep it secret, fine but you haven't pmed me with the info either.
Prices in the USA range from $75 up per kWh.
I was just saying that I will match any other hosting providers rate plans. Even if I post rates people will always try to negotiate them by comparing to another provider. So I just simply decided that any rate plan with any provider I need to compete with so I will offer the same deal they do. I might be making this harder to understand than it is .. if so .. my apologies. |
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Exactly, thus people that aren't interested in buying said product should Butt out and move on, instead of flapping their insulting BS to the seller.  Back to the OP. What's your Hosting /KWH pricing like? Please PM me with info and all fees, charges, etc.. etc... Thanks I've given up on posting pricing given the competitive nature of hosting mining gear. My rates are whatever the best rates are offered by competitive hosting providers. That way you always know your getting the best deal as you could anywhere else. Now I do have expenses and every now and then there is a deal I just can't compete with. In those cases you are welcome to pay to ship them to the hosting provider of your choice. I usually don't charge much for pack up and ship out. In some situations like this sale the seller is willing to pay me to ship them out so the buyer pays nothing but the shipping charges. So ultimately .. I've chosen to peg my pricing to others instead of publishing a fixed schedule that is endlessly scrutinized by people who are lucky enough to have favorable electric rates or free power entirely. I just figure these people don't understand that people in Europe, Australia, California, etc, etc have no choice but to pay rates that often exceed hosting providers fee's by a great margin. For these people most hosting deals are a bargain. I honestly like the competition, well as long as I can compete  It's opening up opportunities for home miners to realize some of the benefits that larger operations usually were only privileged to. Coming from a data center background I can certainly tell you these $75/kW-month +/- deals are just impossible in a traditional data centers. Hopefully all this competition may even bring the rates of traditional providers down. |
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Sorry about hijacking your thread, I'm honestly interested in buying the miners, but for some reason the market for used miners is frankly outrageous. For some reason people seem to think these should sell for what they were originally priced at new or in some cases even more (ebay.com).
I've got more power being delivered next week to my small hosting space, when that's delivered, I'll make an offer, but I'm thinking in the ~300 per range, if that's not something the seller would be interested in at all, I understand, but I think paying more than that for used gear when next gen is around the corner is crazy.
....Around the corner...... Really? You mean possibly at the end of the year!?  On here people KNOW the prices and market, so no need to low ball or mis-lead with prices you could never fill yourself. I understand buying low, sell high, but when you try to back your comments with fake info, it just makes you look......like an ahole. If someone doesn't like the prices, MOVE ON.  I think its a fair point that S5s can be had for around 375 shipped, new, from the manufacturer. Edit: this isn't the thread I thought it was where someone was asking 375 + shipping for used S5s. Commentary: I don't see why everyone gets upset on these boards when prices are negotiated. It's just business. If someone offers an "unfairly" low price, don't sell to them. If someone asks an "unfairly" high price, don't buy from them. It a that simple. Prices are only "wrong" when transactions aren't made. As for trying to convince the other party to change what they are bidding/asking, that's fair game of course. And if you use speculation or made up "info" in an attempt to do so, you will lose credibility and come off as a dumbass. These miners are only "worth" what buyers are willing to pay for them. They are still profitable to mine with for the most part, so you have to assume the seller needs liquidity sooner than expected or they are bearish on mining profitability going forward. Buyers are obviously bullish on mining profitability going forward. Of course economic factors are not the only factors. There may be collectors or hobbyists who are motivated by other factors than profitability. Commentary TL;DR: free markets are complicated. Don't take it personal and get upset with how they function. Edit 2: apologies for the rant and hijacking the thread. Back to our regularly scheduled sale then. Man .. never thought holding an auction would be such a hot topic. |
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I have 4 of each, the SP20Es run about 5% more efficient and two or three degrees cooler.
That's about right from what I see with my SP20 and SP20e's. Man.. now you have me all curious.... time to get the current meter out  Ok .. underclocked the difference shrinks to about 10 watts based on my readings at 1200 ghash @ 649 watts SP20 vs 1200 ghash @ 639 watts for the SP20E |
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I have 4 of each, the SP20Es run about 5% more efficient and two or three degrees cooler.
That's about right from what I see with my SP20 and SP20e's. Man.. now you have me all curious.... time to get the current meter out |
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How long have these been mining? Are they the SP20E or the SP20?
Have they been running full power (1.6th/sec+) or at lower rates?
They are SP20 not the SP20E .. btw if anyone actually knows what the difference is I would love to know. I have both here and they seem to operate the same. The miners arrived at this facility in early Jan 2015 and have been mining at 18.3 thash @ 10.0kW (0.546W/ghash at the wall) running 40% fan speed the entire time. They SP20E is about 100W more efficient than the SP20 if I recall correctly.. Interesting ... perhaps at full power they are but I can assure you underclocked they perform the same. |
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What are the hosting expenses for a SP20/E, and what hashrate do they actually make?
The new owner would have to create a new account with us. I don't particularly post any price; I do competitive matching. You show me the best deal you can get and I'll match it. If for some reason I am unable to match the offer I will gladly pack them up and drop them off at your favorite shipping company if you pay the shipping expenses. No charge for packing up and drop off though. If you are local to the Portland, OR area then I would even be willing to meet somewhere to exchange them physically. |
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How long have these been mining? Are they the SP20E or the SP20?
Have they been running full power (1.6th/sec+) or at lower rates?
They are SP20 not the SP20E .. btw if anyone actually knows what the difference is I would love to know. I have both here and they seem to operate the same. The miners arrived at this facility in early Jan 2015 and have been mining at 18.3 thash @ 10.0kW (0.546W/ghash at the wall) running 40% fan speed the entire time. |
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I run JeffColo near Portland, OR. I have a customer who would like to sell their 15 x SP20 miners hosted in my facility (Just the miners, I provide PSU's with hosting). I'm looking for competitive offers in BTC only for the immediate transfer of ownership of these machines. I can have them hashing for you within 6 confirms. If you would like to keep the miners in my facility I will provide rented PSU's (dps2000bb) for these machines free of charge and in addition I will also match any competitive hosting deal. If you would prefer to take possession of the miners that is also no problem as I can ship them in the original packaging but the shipping costs are on the buyer. I'm willing to sell them individually or in groups, all 15 don't have to be purchased in one lot. The miners arrived at this facility in early Jan 2015 and have been mining at 18.3 thash @ 10.0kW (0.546W/ghash at the wall) running 40% fan speed the entire time. Post here or PM me if interested; I will keep a follow up post with with a tally of users who are winning. About JeffColo;
- Redundant 1 GbE fiber connectivity, ultra low latency <1ms to NWAX peer exchange, 4G LTE backup
- Fully redundant network fabric with redundant ethernet feeds available
- Customer VLAN's and dedicated IP's available for additional cost
- Remote access available through port-forward, VPN or dedicated VPS server in our own facility
- Full VPS service on site for running your ckproxy, your own pool, full bitcoin peer node or whatever
- Power delivery via 3 phase 208/120 - Site A
- Power delivery via 3 phase 480/277 - Site B
Current tally;
cheeseater 5 x $385thedreamer 4 x $375anonymous 2 x $370anonymous 15 x $370anonymous 2 x $365anonymous 15 x $330mrx 15 x $325 UDPATE: AUCTION ENDED 06/08/2015 @ 11:59:59 PM PDTWINNERS:cheeseater 5 x $385thedreamer 4 x $375anonymous 2 x $370anonymous 4 x $370 |
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I guess the point I was trying to make was that the PicoPSU won't cut it. There is a lot of load on the 12 volt side of a pico psu. They just can't keep up with demands from the PCI-e bus let alone current from the CPU 4 pin header.
I'll have to dig up the details of who we used to manufacture. But it has been a reliable design and supports full ATX spec currents from a 8 pin cpu style header including dedicated 4 pin CPU header.
I think I still have like 20 or 30 of those 12v->atx+4pin-cpu adapters in the pic kicking around.
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Preemptive disclaimer that I don't work with GPUs a lot.
But I would imagine the 300W and 280W from your cards, part of that is coming from the risers. If you don't plug the risers into a heavy external supply but run them off your ATX, I'd allot at least 6A of 12V per riser. If the 300W/280W is straight external, they should all run off the DPS-1520 without issue. If that includes the socket power (from risers in this case), you could power the risers off the DPS-1520 and still only be at 80% capacity.
If, then, you ran your 6950 and motherboard off the ATX supply, I'd recommend probably at least a 500W unit. Maybe more depending on what processor/motherboard you're running, and what overhead you want to allow for.
What you could do, and an idea I've toyed around with but haven't tested yet, is actually get two server supplies in parallel load-balanced (I don't know enough about that particular model to know if they current-share or not, but I think most do) and get a picoPSU running off the 12V bus for your motherboard. Those things aren't terribly expensive, and run around 96% efficient. If you isolate your riser power from the motherboard power (either by using the recommended USB-style risers or cutting the 12V lines to the ribbon) you shouldn't overload anything on the picoPSU by trying to pull GPU current through it, and anything else requiring 12V (like GPU, or processor VRMs) would pull straight from your ~3KW 12V source.
You mean like this; This is 3 systems all connected to the same DPS-2000BB power supply. Each system has 6 x PowerColor 6950's (some unlocked) for a total of 18 GPU's. This was an undervolted setup with the memory downclocked to 150mhz through a bios mod. So overall power consumption per system was about 750 watts. The IBM PSU if properly cooled will do 200 amps before OCP trips. So you can actually get upwards of 2300+ watts reliably.  A previous client and I had these picopsu like boards made in china in bulk. They are a special design, unlike a normal picopsu that regulates the 12V line and limits it's current. This design passes the 12 volt straight through without regulation and provides a full 10 amps on 5v and another 10 amps on 3.3v. The connector and wire gauges are sized so that the current from the 3.3v and 5v do no impact the overall current available on the 2 x 12 volt atx pins. Also the CPU connector is straight pass thru. The connector was spec'd so that I could be put on powered from a standard ATX PSU from the 8 pin CPU header (only 4 pin CPU pass thru). Since most PSU's have two 8 pins (one dual 4 pin) you could power two individual systems and then yet one more from the ATX PSU's monster 24 pin cable. However it's very difficult to have enough power to power 3 systems on a ATX PSU as most are limited to 1200-1300 watts.  This is a break out board. So the PSU powers each system with a single pair of #6 copper wire. Then this break out board gives you all the pig tails in addition to the 8 pin CPU style connector to power the motherboard.  A closer look at the PSU adapter break out I made.  |
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I would certainly like to go ... It's nice to have been endorsed by ckolivas and graet.
If for some reason I was excluded ... my vote would be for abracadabra and yochdog.
I do believe at least two people should go, one of those people should be an EE type person ...
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sunbreak If i am informed correctly, sunbreak does not have a stake in this one way or the other, he would be a good impartial judge. He is also very knowledgeable in the area. edit: or me Sure, I'll go ... and it's true ... I do not own any fpga's or have anything invested in asic's nor did I invest any money with pirate for that matter. As for credentials; I personally run a 57 ghash/sec gpu only mining cluster on 110x6950's and 24x5970's on 24 machines with no AC and using only 20kW. I'm the author of strippedminer the 187mb netboot mining distro. I originally wrote all the --auto-fan --auto-gpu code that is in cgminer as an external script and independently sponsored the ADL implementation in cgminer by conman). I also was the one suffered lengthy testing with conman to reveal proper methods to restart stalled gpu's in cgminer. I identified and diagnosed the lack of dns caching and http connection reuse in cgminer which conman reimplemented as a curl ring buffer saving all of our routers Well that's enough, I've done lots of stuff in the community ... and I would love to get a chance to put bfl to the test. |
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 4 x 5870 8 x 5850 4 x 5830 --------- 6.02 GH/s 2.55 kWh Gorgeous. I want to hire you to do a custom install for me. clap clap clap ... Very nice, very cheap, very functional, great airflow, good spacing. I applaud you sir. |
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What super cheap method did you come up with for water cooling. All in all everything you have described is identical to what i'm doing, telco rack and all.
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We may be brothers from another mother. HD also sells tubing that fits snugly over that threaded rod if you're nervous about the exposed conductors. With creative routing and additional support, you can get five rigs onto full-length verticals of uncut threaded rod in the lengths available at HD. Oh ... what kind of tubing? How strong is it? Sounds like you are referring to some kind of plastic tubing? I got some really thin wall aluminium tubing that I used a tubing cutter to make 2.2" spacers so I wouldn't have to use so damned many hex nuts. The result is questionable, it certainly has extra rigidity good for supporting 6 dual gpu cards (5970,6990,7990?). The design in the picture above doesn't have a whole lot of extra support on the outer most cards. The problem with the aluminium tubing is that it doesn't sit on a #6 washer very well. I was putting a washer between the extender pcb and the spacer and when I tightened the nut down on either end it did not straighten like I expected it to. Plus there wasn't enough thread on a 12" peice of all-thread with nut, washer, pcb, washer, spacer, washer, pcb, washer, spacer. So I removed all the washers except the ones on the outside ends. Tightened it up and it looked good, but the spacers ends are not much bigger then the pcb hole and they are rather sharp from the tubing cutter so I'm a little worried about extra strain on the pcb. Then again aluminium at this wall thickness is very very soft and it probably just flattened against the surface of the pcb. I plan on placing motherboards so that I extend the back plane and can use a union to join one set of rails to another so I have motherboard to motherboard support while still allowing me to move 6 gpu segments off the rail for motherboard replacement, whatever. In all I'm not totally happy with the aluminium spacers (not stiff enough), nor the zinc plated all-thread (too flimsy) or the 4" 6-32 bolts (too short) I'm using for posts. Plus I'm worried about corrosion and honestly I'm not a fan of cheap steal bolts. So I'm reworking the design to use stainless all-thread with stainless lock nuts and no bolts. I also want to use 1/4" stainless tubing, it's bigger and man is it stout! Dual gpu cards will be no problem. The only non-stainless is the aluminium L bracket supporting the rails. Also stainless + aluminium is a good combination. |
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