^This is really making a big issue over pulling an extra 50GH out of a unit - a value of less than $18. voiding warranty or buying a second $20 fan and spending the time to install it is not worth it.
At the peak speeds, any improvements you make come at the cost of about 1-1.2W/GH. Running at 1500GH uses approx 210W less than running at 1700GH. Unless you have very cheap power it will likely make sense by summertime to throttle back the hardware to improve the overall efficiency - or have heat problems.
I personally have 3 arriving this week that I hope to achieve ~1400GH/800W so that the fan can be kept at a reasonable volume. At $0.15/kwh it doesnt make much sense for me to try and get another 300GH/400W out of the unit, as the added hashrate gains are entirely spent on added power draw. Same reason as Ive throttled my SP10 units from 1400Gh to 1260GH to save 200W
Sorry @knlondike but you misunderstood me. You calculate with a fix price of the machine. Calculate cost and profit. I'm not speeking about the only 50ghs but when the weather gets warmer this will be 100ghs (from 1680 ghs) or more. At 20 pieces it's 2000ghs.... And i have room much more than 20.... I hope you unerstand why i'm trying to find some solution..... curious what you pay for power. I understand the aspect of clocking hardware to its limit if its profitable, but if you need to make >$10 in modifications to gain 50GH/60W per unit, plus have slightly more PSUs/TH it could be more practical to buy an extra SP20 for that extra 1.65TH/$500. If its a hobby to do modifications though thats another story  Ok I'll give up... For me it's not hobby... It was a hobby with a Jupiter and some S1-s. Maybe would be practical to buy one more unit for sure. But I have a lot of high cfm fans and other parts laying around.... But at this point I give up. You don't know a lot of details so you can't make a judgement what am i do and why. But trust me, I have the reasons. So back to the original question. Any ideas to improve the cooling?  Very strange, was a profitable hobby when the Jupiter and S1 were profitable, now the sp series are not. So now is unprofitable hobby/business Really all of this should go in another topic. But... I don't agree saying SP gear is not profitable. They have so many different miners, there is no one size fits all on calculations. I have ROI'ed almost every miner I have had. You need cheap electricity, run as long as you can. With SP20 you have a heck of a under clock theses will be running for quite a while. At end sell to someone with "free" or even cheaper electricity. If you keep PSU's you can go to another generation without some of the upfront costs. Sp gear is profitable, I didn't said it's not. The others well said by Notlist3d. If you want to wait that long. Manufacture's never came out with many different models at once, so your hear would be running for 2 years sometimes, and still not profitable yet. Now users are just buying whatever model(s) they can and have no idea what's going to give them a positive return. Just because a new model comes out, doesn't mean you have to go out and buy it. 2-3 years just to break even is a long time. I myself could never wait that long or run all these machines in my house for that long. |
|
|
|
Hello
Opentoe, I know one person with the same problem with one C1 bath 1.
We configure the miners with standard voltage 0725, the chips to 256Mhz save and aply. Wait 1 minute for save and apply and turn off the miner 1 minutes. Turn on and wait 10 minutes. In the hash rate is less of 900Gh, we continue turn off, wait 1 minute and turn on again until the hast rate is near or 1Th.
Please, is important wait 1 minutes between turn off and turn on.
Regards.
Antuam.
Really? This is actually a batch 2 unit, but anything to try I guess. The longer it runs, the lower the hashrate. So I'm thinking a buggy firmware with a memory leak that's killing it because when I power cycle it, jumps back up to 1005TH and then slowly starts dropping, real slow. I'll try this "trick" once it gets back down to 900 again. Thanks. Which pool is it on? I don't think its the solution but worth a shot. I tried Ghash and BTCGUILD. Both steadily dropped the hashing rate to 900 on two of thrm now. Regretting a little a bought 6 of them dince only two are performing at spec. |
|
|
|
Hello
Opentoe, I know one person with the same problem with one C1 bath 1.
We configure the miners with standard voltage 0725, the chips to 256Mhz save and aply. Wait 1 minute for save and apply and turn off the miner 1 minutes. Turn on and wait 10 minutes. In the hash rate is less of 900Gh, we continue turn off, wait 1 minute and turn on again until the hast rate is near or 1Th.
Please, is important wait 1 minutes between turn off and turn on.
Regards.
Antuam.
Really? This is actually a batch 2 unit, but anything to try I guess. The longer it runs, the lower the hashrate. So I'm thinking a buggy firmware with a memory leak that's killing it because when I power cycle it, jumps back up to 1005TH and then slowly starts dropping, real slow. I'll try this "trick" once it gets back down to 900 again. Thanks. |
|
|
|
SP20 - $659 1.7TH/s Shipping - $119 Power Supply $200 (decent one) Total $978 I just want to know how its done. Even lowering the price to $500 doesn't give you your return. I'm just trying to be more green. And my girlfriend has me on this kick of powering off everything. The more miners sold, the more electricity and larger electric foot print the mining community will have. Maybe I will go green one day, try to do my part in making our only planet livable for our grandchildren. But trying to plug in some numbers, seeing how nothing gives you anything back for what you pay for, why do it? Please tell me I've made an error somewhere. And not some $20 error. I want to justify in my head on the electricity use, so maybe I can bring that back to my girlfriend and she'll start to agree. All she sees is a bunch of electricity sucking hardware all over and a high electric bill. And of course a tripped breaker when she wants to dry her hair or vacuum. What is wrong with the below screen grab? Is it really all about free electricity? https://tradeblock.com/mining/a/f56Tst2NSu7ARxAcen6VCS |
|
|
|
I know !!
Sp31 runs really good!
Minersource Hmm??
I make 1,9 btc last 33 days.
Ghas.io
With a sp31
Wrong Pool?
That's all your gonna get out of it. Lucky you got 1.9 btc. |
|
|
|
I'm still trying to understand why people are still buying miners , granted these prices are great but these machines will still have a hard time getting ROI.
a single SP20 makes less than $4 per day after electricty (assuming $10 cents /kWh)
Granted i will not turn off the machines I have right now (2 sp20s and 1 SP30) but the SP20s were purchased using compensation from issues with the sp30
What do you guys know that I don't ?
How would you even consider purchasing 15 sp20s at ~8k and then another $2k in PSU's all for 24TH and the joy of having to manage 15 boxes lol ?!
If anything its a better deal to buy an SP35 and at least you know you get the PSU's and around the power of 4 sp20s for under 3k ?
*** edit the sp35 is not a good deal actually its only 5.5 TH **** i though it was 6.5
makes me sad that hardware has peaked right now. I wired up my basement with 3 30AMP circuits have nice cooling and everything but there is zero reason for me to buy any hardware at this point. 3700 Watts for 5.5 TH seems excessive.
I see why the sp20s are a better deal far more efficient but these things are far from fire and forget, i spent at least 2-3 hours baby sitting these boxes every day sometimes more and I'd be dammed if I want to spend that kind of time managing 5-10 lol
Even with free electricity its almost impossible to break even on new hardware, hence selling from stock. If it could make you a little money on the side they would be out of stock already. Manufacturer's have a real hard time lowering prices to a drop bottom price because they've had it so good lately and are use to the premium prices. Doesn't matter if it is 10TH/s rig or 10GH/s rig. Then on some of the home products you still need to buy additional hardware like a power supply. And for the users that bought hardware anyway, they may have purchased on coin they made with their current setup and think they'll still make more after BTC rises. Unlikely though. I bought a couple of the "cheaper" brands that are cooled by water with my dad basically for fun, and sometimes they work great and sometimes they don't. The only rig that has been solid as a rock is my SP10, which will be turning off very soon since I can't run it at my house and it isn't making enough to pay for co-location costs. I'll have 2 SP10's for sale probably pretty soon. I need my garage for my cars and I really can't run that at home because of the noise. Happy New Year! |
|
|
|
I have a C1 that's slowly dying on me. Power supply checked. Raised voltage to 760. Checked pump. Tried different pools. Checked all connections. Re-flashed. Tried different out in house. So what's going on now? I've only had a few weeks of problem free mining with these guys, then it is constant attention and tinkering to get them to hash normally. Starting to drive me crazy. Thinking of selling all my C1's and just get another Spondoolie. They are as stable as our earth's orbit. The temps are good. No X's. What's the problem now?  |
|
|
|
C1 arrived in a record time. Miner is ok, but the cooling kit is the worst thing i have ever seen. The water pump leaked on the first power up and died after 1 minute work, wiring for the fans is bad soldered and the wires are so thin, tubes for the radiators soften if the miner has temperature over 40C. They should take care about this. Syscool should raise the price for 5-10 usd and sell quality not quantity ! ! ! Next purchase will be only miner. I dont need crap
Only bad thing about this miner is the cooling kit. I replaced my defective fans (the ones Bitmain wouldn't honor with an RMA on a brand new C1) with a high quality high CFM, but quiet fan and is keeping my temps down 2 degrees across the board. I had one broken fan - out of the box. What make/model of fan did use for the replacement? Any high quality 1200-1500CFM ball fan will do. Some of the better ones have lifetime warranty, which you can't beat. WWW.NEWEGG.COM carries a lot of different fans. |
|
|
|
C1 arrived in a record time. Miner is ok, but the cooling kit is the worst thing i have ever seen. The water pump leaked on the first power up and died after 1 minute work, wiring for the fans is bad soldered and the wires are so thin, tubes for the radiators soften if the miner has temperature over 40C. They should take care about this. Syscool should raise the price for 5-10 usd and sell quality not quantity ! ! ! Next purchase will be only miner. I dont need crap
Only bad thing about this miner is the cooling kit. I replaced my defective fans (the ones Bitmain wouldn't honor with an RMA on a brand new C1) with a high quality high CFM, but quiet fan and is keeping my temps down 2 degrees across the board. |
|
|
|
It kills me to see people buying pumps that will cost them over $100. That's approx 1/4 the price of the whole miner! It really is unfortunate about the quality of syscooling products. I already had a leaky pump that I fixed myself and I doubt my other two will last very long. And since Bitmain doesn't RMA defective hardware, it's pretty much a one time buy and see ya later deal. EK make really good pumps, but they are expensive as heck. There just isn't any mid-range high quality pump to buy anywhere. I'm still on the search for pump alternative, but who knows. |
|
|
|
5 SP20's right under your bedroom. You MUST live alone? I have an attached garage, which I tried my SP10 in and still couldn't keep it there from those high pitch fans. Then you wouldn't believe what happened. My good friend brought over his 2 SP10's and told me to go into the house, while he was in the garage. I heard him start up his SP10's then turn then off. He called for me to come out into the garage and low and behold the 2 SP10's were running! He made this audio box, same width size of the SP10. Has a bunch of what looked like speakers to me installed in it and the box was connected to some control with a few knobs on it. He turned one of the knobs slowly and the sound started to get louder and louder. I know nothing about frequencies or audio waves, but all the box does is cancel out all the audio/frequency waves from the miners. Not sure how it works, but since he wants to sell them, he wouldn't let me take a picture. Trust me, it was just a plain wood box with many different sized speakers I think. He said he has a few versions he's working with and making them variable tuning so the timing and frequencies aren't tied to one miner rig. Which would be impossible anyway, maybe our ears think they all sound the same, technically they are not. He was showing me all this on some meter be brought over. When he sells them he said he would make a post here with a youtube video. I don't know any of the details.
Neat! Here's some more data on how that works: http://en.wikipedia.org/wiki/Active_noise_controlThat's the word he used. I forgot it, but now starts to make sense. He's big with radio stuff, meters, electronics. So he had to make a deal with his wife about the sound. If she couldn't hear anything while sitting in the kitchen (which is where the attached garage is next to) then he can have his miners. He worked like a dog and finally got them quiet, very quiet. But of course you need the tools to build such things and he had them all. Especially all his funky meters. |
|
|
|
My Sp 20 is disconnecting/ stopping mining for no reason. I have 1300PSU platinum going and it keeps knocking itself offline. The fan is still running so the only way I can tell is when I log into it, which I can't do at that point. I log into my stats page on eligius and I can see I am zero hashing. If I reboot PSU then it comes back on. Seems to be happening between every 4 and 24 hours. Is anyone else having this issue?
I have reset to factory and now trying to run. we will see how this goes.
lower your watts setting to 250 and drop the all the volts by .005 you are taxing the psu. My seasonic 1200 strains to run this and I have to use lower settings then my evga 1300's PS: I'm running mine on a pair of CX750's though and have been having this issue too... any suggestions/advice?  well my thread has tests for 5 sp20's they are more like 1400 to 1500gh. Unless you can stand the noise and have really cold air. Since all 5 are in my garage directly under my bedroom. I have no choice but to do massive under clocking. 1350gh I can say that these are not a 1700gh miner do -10% which is 1530gh work from there. 5 SP20's right under your bedroom. You MUST live alone? I have an attached garage, which I tried my SP10 in and still couldn't keep it there from those high pitch fans. Then you wouldn't believe what happened. My good friend brought over his 2 SP10's and told me to go into the house, while he was in the garage. I heard him start up his SP10's then turn then off. He called for me to come out into the garage and low and behold the 2 SP10's were running! He made this audio box, same width size of the SP10. Has a bunch of what looked like speakers to me installed in it and the box was connected to some control with a few knobs on it. He turned one of the knobs slowly and the sound started to get louder and louder. I know nothing about frequencies or audio waves, but all the box does is cancel out all the audio/frequency waves from the miners. Not sure how it works, but since he wants to sell them, he wouldn't let me take a picture. Trust me, it was just a plain wood box with many different sized speakers I think. He said he has a few versions he's working with and making them variable tuning so the timing and frequencies aren't tied to one miner rig. Which would be impossible anyway, maybe our ears think they all sound the same, technically they are not. He was showing me all this on some meter be brought over. When he sells them he said he would make a post here with a youtube video. I don't know any of the details. |
|
|
|
I still dont understand why people would rent equipment that costs more to rent than the btc it mines? Owners who enjoy the hobby and actually have and own the equipment are different. You'd be surprised how many obsessed miners run right on the edge and barely make more than what they pay out. I went over all my numbers last night and I'm doing it right now. I have over 9 TH/s spread out. Some co-located, some home, some elsewhere. And when the month is all over (using today's numbers) I'm just making enough to pay for the fees, electric and associated costs. And I've been mining for quite some time, so I'm dumbfounded how new miners are doing it. God bless 'em. |
|
|
|
Can someone do a sound meter check on their SP20 in their home? Not in a garage or warehouse? I'm trying to figure out the acoustic situation they will bring down on me and figuring ways to avoid that if I bite. Here's one of my AntMiner C1's hashing 1005TH/s. I actually have two in the same room and don't notice they are there, but of course rather have Spondoolie's if the prices are right. Thanks. I was about a foot away or less when doing this measurement.   Thats at 80% fan. Thank you. |
|
|
|
|
Request.
Don't use the Windows registry hive to save the config data. Just use a simple *.ini file so the program can be truly portable. Right now I'd love to copy that whole folder over to another computer and just run it, but I can't. I have to re-configure all the miner's again back into the registry.
Nice work though for sure.
|
|
|
|
|
So it just boils down to you blaming the shipping company now. All boxes were in perfect condition and were physically checked before I signed them. Here in the US and I doubt in China, the UPS man does not sit around and wait for you to open up a box and check all hardware out. It doesn't matter. I won't be purchasing anymore Bitmaintech products in the future.
|
|
|
|
Can someone do a sound meter check on their SP20 in their home? Not in a garage or warehouse? I'm trying to figure out the acoustic situation they will bring down on me and figuring ways to avoid that if I bite. Here's one of my AntMiner C1's hashing 1005TH/s. I actually have two in the same room and don't notice they are there, but of course rather have Spondoolie's if the prices are right. Thanks. I was about a foot away or less when doing this measurement. |
|
|
|
I think the overheating issues rumour is based on the farm fire in Thailand. Very convenient for competitors and their shills to use. I even saw one thread where the guy went off on one saying it was SP's datacenter where all the customer rigs are located.  I'd love to comment on this, but my head would be chopped off if I did. Stuck in a NDA about that fire but some would be pretty surprised if they knew. |
|
|
|
You have free electric, right?
If you were to partake in any other hobby, would you expect that hobby to pay you to do it? I always find it a tad idiosyncratic that people tend to think if BTC price is not above a certain level at any point in the day, mining is not worth it. just because you get free electric, you continue to mine, right? I have 3 x SP10's on free electric and could put the rest of my miners into the same unit, but I don't, I run them in a garage @11.4p/kWh because it's my hobby and I expect there to be some outlay for the extra-curricular activities in which I partake. for making a living, i seem to be one of the few who actually go out to work  Trust me. I work well over 50 hours a week and have been since I was in my early 20's. I'm not some teenager filling his moms garage and basement with bitcoin rigs. Free electric in as I don't have to pay for it, but I still have to work for it. So I guess it isn't really free. |
|
|
|
|
Show Posts
