still looking for some buyers!
maybe i would take 1. I am in the usa do i get access to a log in if I keep it in canada and let you host it. if I run the miner at 3600 setting and it uses 1900 watts I pay 200 a month to host it? I will check whats possible - I know remote access is available (I use it), but have to check if its available for singular-unit owners as im not familiar with the details. its around $110-115 cad/kw/mos IIRC, so 190-200 USD for 1900W (wall) sounds right. I'm very tempted. PayPal? Maybe save shipping and put some cables in the box as well for me? Hmm cant do cables in the box - simply isnt space in the SP31 box paypal should be possible, as long as there's no risk of chargebacks or w/e. Though I prefer to do larger transactions with Bitcoin (escrow is totally fine if you contact and bring forward a reputable provider (theres a subforum for them, ognasty has a good track record), and cover the escrow fees yourself) |
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As I thought, none of your chips are even using higher than .73v (actually only 1 is and its not very happy about it as you can see in YELLOW) and the rest are borderline throttling /at their temp max.
the fan setting of 10 should not be used with stock settings under any means, and that is why the default is NOT 10
+1. its obvious that all the chips are operating at the high end of their temperature range, which likely has an impact on the operating efficiency compared to the ideal 85-105C readings you should use at least 25% fan for the settings you have |
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still looking for some buyers!
maybe i would take 1. I am in the usa do i get access to a log in if I keep it in canada and let you host it. if I run the miner at 3600 setting and it uses 1900 watts I pay 200 a month to host it? I will check whats possible - I know remote access is available (I use it), but have to check if its available for singular-unit owners as im not familiar with the details. its around $110-115 cad/kw/mos IIRC, so 190-200 USD for 1900W (wall) sounds right. |
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still looking for some buyers!
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IMO its hands-down the SP31. The Sp35 ran at extreme speeds where it fought to squeeze the last 200-300GH at a cost of about 1GH/w. the Sp31 is a better balance, and can operate at about 3600GH/1900W (wall) in efficiency mode or ramp to about 4750GH/3000W (wall). The volume at <4000GH is reasonable for use in a smaller building, but oing past 4000GH gets noisy enough that a shed or datacenter is suggested Check out the used market - new the SP31 is $2075, but used you can get them for $1700-1850 https://bitcointalk.org/index.php?topic=951608.0 |
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I never said 2 sp20's to 1 psu
I said 6 sp20s to your 6 psu's
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that means 1 psu per 1 sp20
with my settings .
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I hope you did not damage your psu's or the cables
I think there was some misunderstanding , i'm not running 1 for 1 i have 2 for 2 , if that makes sense. I just think i had them wired incorrectly and even with what i thought was a spread load something kept going off. But it's been stable for a few hours now. 2 machine using 2 psu's should work if settings are a tiny bit low say 1300gh using 700 watts like klondike_bar mentions. Honestly, theres no reason to spread 2 PSUs over two units. Because when one PSU trips both units will continue 1/2 working, and thus transferring the controller+fan power draw to the other PSU - which will likely trip that one soon after. 1 unit, 1 power supply. If the PSU trips, your settings are too high. watch the asic stats page, you need to set maximum wattage per loop to <180 |
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Thanks to legkodymov.
S5 was based on legkodymov's serial power design, and its power consumption at wall is 0.51W/G.
S2-replace PCB will be released after Chinese Spring Festival, and it will be serial powered too, and its power consumpiton at wall will be less than 0.4W/G.
Thx Bitmain! Any idea on price for the new S2 PCB? Ive got 2 S2 just sitting here - finally i can get some use from them! 2.5TH? not shabby obviously the PCB kit/boards has to be cheap enough - right now the S5 pricing sucks a little bit ($370 still) |
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^wait - why did you arrange them like that? did you cross-link the power supplies to different units so that each is powered by both PSUs? looking at your stats/settings it looks like you set the max wattage to 240w/pcie, which will cause the hardware to start at about a 600W draw and quickly climb up towards a 950W draw. Obviously that will trigger the PSU to turn off
If your power is cheap, you can go to full specs (1600+GH/1100-1200W) using 2 PSUs/miner
or if you want to keep noise/heat down, you can use 1 PSU per SP20, and set your voltage around 0.64 and the wattage limits at 175W/loop to achieve about 1300GH/700W which can be cooled without excessive noise and heat
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I am glad to see i am not the only one having a miner going down without any reason, however in my case my psu switches off and only starts after i have let the psu without power for some time.
I will try the sd card option as well
Also noticed since zvisha set it very low speed it seems to run a bit longer now, really hoping it not again to stop
I does not matter which psu i use all the heavy ones or even a 1000watt and a 1200 watt connected with the weird sp20 it can run for a few hours or a few weeks and then all of a sudden poof its no longer running.
However i am not sure if its the same problem, this machine does need much more power than the earlier bought one.
please clarify - you have an SP20 and it tends to overload your 1000W and 1200W power supplies occasionally? Is it running at full hashrate (ie: <1500GH)? sounds like you are drawing too much power and tripping the PSU, which isnt the fault of the SP20 |
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Hi all, been lurking for a while and picking up great info so thank you.
Yesterday my 3 SP20's arrived , got to say the service from Spondoolies was fantastic.
After a bit of reading i decided to go for the Corsair CX750M power supplies, 6 of them to be exact. I figured a nice spread of power and if i lost one then the miner wouldn't be totally down.
No matter what fan or power configuration i seem to use they are only running at around 1582 each. One unit is sitting at 1.6 but this is still , but sometimes it's less and it's just scraping the +/-10% you would expect.
If i set the power to nuts mode maybe a bit more , but i find it best to have everything set to medium as the extra noise and power drain isn't producing anything more by any viable magnitude.
If youre running at 1450-1500GH/ea and find thats bordering on too hot and noisy, there's likely no need for having 2x PSU for each. Do you pay for power and how much? I find these can run on a CS650M (gold) at about 1160GH/600W (about 0.55w/GH). From there to the max speed (about 1650GH), every 100GH speed increase is almost a 100W power increase. You have 744W of 12V available, a single PSU could probably achieve 1300GH/700W and have a little bit of headroom. |
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bump - Ive brought the pricing down a bit - Im hoping to find a buyer by the end of the weekend
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Ok, got my reply from ANACS, and they would be happy to grade these coins. There is a 5 coin minimum and I have 3 coins I want graded....so here is my announcement to get your coins graded!
Join my ANACS coin grading run. The costs are very simple and are broken out below... (U.S. Only)
Cost to ship to me - Whatever it costs you
Cost to ship back to you - $4
Cost to grade coin - $14 per coin
Cost to Ship to Grading Service - $5 per coin
Cost to Ship from Grading Service to Me - $5 per coin
My fee for time/plastic holder - $3 per coin
Total - $4 + $27 per coin
These seem to be the costs that it will take per coin to get graded, if you are interested please let me know and we can work on getting your coins to me so I can start the run. Please let me know if there are any questions.
Thanks,
DebitMe
I was wondering... how would you distinguish who owns each coin? If you collect a bunch of coins from different user, how would you distributed them fair, if they come back with different grades. The coins itself do not have any serial number. The ANACS service asks you to put the coins into plastic cases and mark each one with a number that corresponds to the line on the request that you submit. I assume they come back marked somehow, but I have no prior experience with this. Can anyone lend an hand if they come back distinguished from each other? If they do not, then this group grading will probably not happen, because I will have no way of knowing whose coin is whose. I assume its nothing to worry about. If you mark the coin cases only an incompetent grader would not put the coins back in the exact same cases they came from. ANACS is better than that  |
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Which mining unit has the lowest $/ghs cost? (not worrying about power consumption)
I've looked around an am having trouble figuring it out.
antminer s1 units or s3 units you can likely find $0.15/gh also, used gear. used SP3x units are pretty cheap. Im asking $1900 +shipping for a 4.9TH/3.5kW SP31, which is $200 cheaper than new and has built-in PSUs |
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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.
I've done this before on some of our early prototype PSUs. It works okay. It's not worth the time it takes to put it together, though, in my opinion, especially if you find a decent source for 16awg PCIE cables that are long enough etc. *cough* shameless self-promotion *cough* |
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https://bitcointalk.org/index.php?topic=951608.0I can supply SP31 units that are currently hosted in Montreal,QC for $1900 USD+shipping (cheaper if you want more than one). At low power these can be acceptable for home use, but anything over 75% PSU load they start getting loud. (at about 65% load they are similar to an SP20 at 20-25% fan speed) I can probably even sell the colocation slot to you (you buy the miner and take over the colocation (its about $100/kw/month + tax)) 1/$1900 2/$3700 ($1850 ea) 4/$7100 ($1775 ea) 7/$11,900 ($1700 ea)
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Yep, too expensive for what it is (used) unfortunately.
I really want to pick one up, especially since it's in Montreal, so hopefully your friend decides on a more reasonable price before I end up buying something else.
GLWS!
I said it before, ill say it again - its used, but it spent its life in the best possible home. -shipped on its own pallet(s) straight to the DC -installed in an actual DC (AC cooling systems, dust-free environment, and virtually zero downtime) - have operated without issue for months - will ship from the DC and local pickup is available There's no real reason to believe that these fully-tested units should be any more prone to failure than a new unit from spondoolies-tech that costs almost $2100 USD + shipping +shipping time. If you're local thats another $100+ saved on shipment costs I'm not in a rush to sell these, but I am willing to be flexible on the prices if you make a strong offer. I was referring to my friend's hosting service linked in my signature. I remember you e-mailing me a bunch of times.
oh yes - i was trying to dig up the emails but i cleared out my backlog of kijiji replies not long ago. IIRC, the datacenters (or at least the guy (R.) who has the machines in a specific colocation contract) were different. |
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And with air conditioning included, you basically will have to double your power usage (it will emit 99% of the energy as heat, you will need equal amount of energy to cool that heat)
Isn't AC roughly 1/3 the energy again to remove the energy, not 100%? And to the OP, if you limit the SP35 to 800W per PSU it is crazily quieter as the PSU's fans remain low @ 40C. Or 950W @ 36C, 1100W at 30C, 1200W at 26C. Your numbers might vary slightly as my temp readings may not be entirely accurate. correct on both. AC power isnt 1:1 with the kw of heat, its generally 30-35% depending on efficiency of the AC and other factors and i can attest to the second point. I just setup an SP30 (basically an SP35 / smaller PSUs) to run at 30-40% fans in the daytime (3.6TH/2kw) and ramp up to 80-90% (4.2TH/2.6kW) at nighttime when noone is around and power is cheaper. at 40% fans are comparable to an Sp20 at ~30% |
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Are these hosted where I think they are?
im not sure? |
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okay, i got some further information, and there are seven units available. updated OP with prices
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Someone just sold some SP30s here for 3.8 BTC, thats not far from what you can get from here. You should try eBay to sell at those higher prices. I'll offer you 4 BTC here for one with OGNasty as escrow.
There must have been something wrong with them. 3.8 is way too low for SP30s. If I had the coin, I'd offer the equiv of $1700 shipped.
M I think its going to be possible to sell them for a price just a little higher than that, but only for large purchases. Im hoping to get a new asking price and instock quantities later today since it seems that $1800-1900+shipping isnt getting as many bids as expected. |
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