I'm interested in replacing two S3s with a SP20. The SP20 would be deployed at a data center where we have 208 volt power and active cooling. Power consumption, cooling, and fan noise are not a concern.
My hope is to reuse my two CX750M PS units that are currently driving the S3s. My question is how far can I safely over clock an SP20 with these PS units?
The Spondoolies site (which references the CX750M in their testing) recommends a 20% power reserve. So theoretically 1200 watts out of 1500 should be usable.
In an earlier post, someone indicated that overclocking to 1.8 THz consumed 1200 watts. But I don't know if that was at the wall or on the PSUs.
I've looked at the Spondoolies documentation, but the only information I could find was how to use their GUI to specify power parameters for overclocking. The information is pretty basic and sparse where it comes to actually tuning a unit for performance. Note that this was for the SP30; I couldn't find the SP20 User Guide on their site, but I assume that the configuration GUI is largely the same across all their products.
I'd be interested in any real world experience that people have had with their SP20s that would help me estimate how far I can safely push it with two CX750M PSUs.
Thanks in advance for any suggestions.
you can set the psu settings as high as 288 for each board. the real question for you is the cables on your psu do they handle a draw of 288 watts. I know evga 1300 watt and evga 1600 watt can be set to 288 and not melt. my guess is your units cables will set to 250 watts and you will get about 1550- 1650 gh out of the machine. you do know that setting to 180 watts gets you 1320-1350gh at around 740-765 watts. Not melt, but how hot do they get? I have a 750W PSU running on an Atminer S3+ and the cables can get warm to the touch. At 288 watts they must get really hot. I would not go to 288 on those psu's I would do only 225 to 250. I have done lots of testing with egva 1300 and evga 1600. in my house the fan noise is an issue and the gear will got hot and suck down more power when you go to 250 to 288. watt settings. since it is my house and I am a safety first guy have no worries doing the lower settings of 180 watts. I guess what I am saying is I do not believe the cxm 750 can do more then 250 setting long term. I have been mining since 2012 the gpu world and I have overheated psu wires. more then once. I do think you can set 250 x 4 = 1000 watts at the sp20 about 1100 watts at the psu plugs and run the gear at 1600-1700 gh I do not think those wires can do the 288 x 4 setting about 1152 at the sp20 and about 1275 at the psu. but I did not test a cxm only the evga's I have had cxm 750's and I think they are just a little less hefty wire wise then the evga 1300 or 1600. the amount of extra hash at 250 vs 288 is not worth it for you… but I am only one guy with an opinion. maybe someone else has exactly the setup you are asking about. |
|
|
|
I'm interested in replacing two S3s with a SP20. The SP20 would be deployed at a data center where we have 208 volt power and active cooling. Power consumption, cooling, and fan noise are not a concern.
My hope is to reuse my two CX750M PS units that are currently driving the S3s. My question is how far can I safely over clock an SP20 with these PS units?
The Spondoolies site (which references the CX750M in their testing) recommends a 20% power reserve. So theoretically 1200 watts out of 1500 should be usable.
In an earlier post, someone indicated that overclocking to 1.8 THz consumed 1200 watts. But I don't know if that was at the wall or on the PSUs.
I've looked at the Spondoolies documentation, but the only information I could find was how to use their GUI to specify power parameters for overclocking. The information is pretty basic and sparse where it comes to actually tuning a unit for performance. Note that this was for the SP30; I couldn't find the SP20 User Guide on their site, but I assume that the configuration GUI is largely the same across all their products.
I'd be interested in any real world experience that people have had with their SP20s that would help me estimate how far I can safely push it with two CX750M PSUs.
Thanks in advance for any suggestions.
you can set the psu settings as high as 288 for each board. the real question for you is the cables on your psu do they handle a draw of 288 watts. I know evga 1300 watt and evga 1600 watt can be set to 288 and not melt. my guess is your units cables will set to 250 watts and you will get about 1550- 1650 gh out of the machine. you do know that setting to 180 watts gets you 1320-1350gh at around 740-765 watts. |
|
|
|
I am setting up my first SP20 but it is unstable and stop working after several minutes .  Try lowering your miner PSU limits. do this above: right now my settings are: copy them use them note make your fan 70 not 50 these settings are under clocked they give me 740 watts and 1313 gh hash. you should be stable with these numbers. if you are good then try to creep them up a bit. or just leave them as they are very power efficient settings. I can stay between .55 watts and .6 watt with under clocking   |
|
|
|
thanks again for using my affiliate link for your 2nd SP20 Phil.
appreciated.
NP I sold off 3 s-3's to make some coin to pay for it. I am really tempted to buy a third. |
|
|
|
2 miners at 746 watts is 1492watt, evga 1600w should have no problem with that load!
and a total of 2.7th/s!!!!!!!
right now my 1 machine is doing 1368gh using 840 watts at the plug this is 0.61 ---- in a warm room my 746 -- 1350 numbers or 0.55 can be achieved but you sometimes have restart troubles at those settings. when my second machine comes I will try to run 2 units on my evga 1600 p2 but I think it may be just short of being able to do it. Dogie would have been more accurate with 1.8 machines if you can get a server hp 2000 psu it will run 2 of these no issues. if you have 220 volts even easier |
|
|
|
thanks guys..
I'll talk to the investor and see what he says about buying the coin..
I'm guessing your trolling. But if you do have 1 million dollar client.... hire a consultant. well guess all you want.. people have money, and a million isn't really special these days. to clarify, no client.. me. is there such things as "bit coin consultants" or do they go under "cryptocurrency consultants" ? I was all new to this so I like to do some digging myself before involving people, and getting charged high fees... how do you think I have this money... haha, Thanks again guys.. I'm gonna watch the price charts for a while to see what happens, as someone suggested to invest in the coin itself which I will do if I feel it's not going to drop.. in the meanwhile I'm looking at other currency as who knows, it might blow up like bitcoinn as there is much more to be made with cheaper currency then higher priced currency ( my take ) First question is where do you live? just the state is enough. next question is? do you want to run a place as a job? lets say you want sp20's decent gear below is a 10,500 dollar deal http://www.spondoolies-tech.com/products/sp20-mini-farm-batch-1much less then 1,000,000 it needs 15 psu's this one is great sale is solid http://www.amazon.com/EVGA-SuperNOVA-1300G2-ATX12V-120-G2-1300-XR/dp/B00COIZTZM/ref=sr_1_1?ie=UTF8&qid=1417238771&sr=8-1&keywords=evga+1300+g2so 10500 plus 2400 is 12900 and 1 good switch 100 bucks 1 good router 100 bucks and maybe 200 in cat 5 wire that is 13300 and 700 in shelves 14000 to set this up if you run with high clock it will use 15 x 1100 watts or 16500 watts that is 400 kwatts a day 12000 kwatts a month. at 10 cents for power with 5% jumps in diff you lose 5k …… and I gave you free rent and zero labor costs. at 8 cents for power with 4% jumps in diff you almost break even. so do you have 8 cent power? |
|
|
|
|
these miners are finicky . they have heat and voltage creep. At least 3 confirmed customers have burnt them.
For safety get a cookie sheet line it with some ceramic tiles. this way if it burns it is on a fire proof surface.
Crazyguy took a return from me. I wrote this up a lot on his thread. While I liked this gear and I am handy I could not get it to stay underclocked at 950 watts and 1200gh
the watts and the heat drifted onward and upwards. seeing the 3 burnts setups and having to travel a lot the next 2 months. I was afraid to run this gear with out close supervision. I was happy that crazyguy took the return from me.
If you buy this you need to run it in an area that can handle it burning up.
@ dogie please show some of the burnt up boards that happened with these for the sake of safety of our forum members.
|
|
|
|
They are just as loud, but personally speaking the pitch on the fans is much more tolerable than the SP10.
Hey Matt/bobsag3 when are you finally going to send me my refund Minersource (Miner Hosting LLC) promised twice??
I was told to receive a refund on May 22, 2014 and on June 30, 2014.
I ordered on November 2013. Your company still has my $844! I told you I would be fine if you would just send me 1 BTC and it's done. I've been waiting more then 6 months now... 
Please send the BTC to: 15TrStnmq3G3NymjDQGPKfvGKGtd9x9945order number ending with: R....24732 to bobsag3 if this is a legit complaint please fix it. @ Dallas5 hopefully if you are legit bobsag3 and thomas will pay you. you can then buy an sp20 for the refund. Thanks, I've been waiting for a refund from Minersource for several months, I've tried everything and don't know what else to do, $844 is just to much to give up and let them have it. Shitty thing is more then 6 months after my order was cancelled and I was promised to receive a refund on two occasions they still tried to ship the now worthless blackarrow X1 miners. Sorry for posting here, I will leave this thread alone. As I said I'm running out of options and I can only remind them in the hope they will do the right thing. shame black arrow hurt a lot of people. bob, tom and dz zombie had made a lot of money for a lot of us in the early rounds. this round 17 they paid back more then 40000 usd in refunds. they still float around maybe you can catch them on a good day and they will pay you off. they refunded me but in btc. which tanked a lot. so my usd loss on this was 400 usd on 13 shares. good luck. bob if he is a real buyer toss him something. |
|
|
|
|
yeah I am good after about 2 hours.
|
|
|
|
okay took a while but I have it running. I will post back in about 1 hour . i was doing 1400 on mmpool I am doing 1400 on westhash  I am Just about the same 1403 this is under clocked  |
|
|
|
Guys, I would need some of you to test how well a Spondoolies SP20 works on our pool NiceHash / WestHash. Could somebody please try to connect to our stratum for like a half an hour or so and see if hashrate reported on our site is the same as reported by miner? stratum+tcp://stratum.nicehash.com:3334 -u yourBTCaddress -p x stratum+tcp://stratum.westhash.com:3334 -u yourBTCaddress -p x When your miner successfully connects, take a look at the miner stats page: https://www.nicehash.com/index.jsp?p=miners&a=1&addr=enterYourBTCaddressPlease report if you have success because we have some customers interested in upgrading to SP20. Thanks! I will do it in about 10 minutes. mmpool.org was fine btcguild.com was fine I set diff to 1300 on mmpool I set diff to 1024 on btcguild . here is my current page for mmpool and the one sp20 I have stratum+tcp://stratum.nicehash.com:3334 1JdC6Xg3ajT3rge3FgPNSYYFpmf53Vbtje p=0.121 I f'ddd up need to do p=0.0121 will do!! |
|
|
|
To be honest, I've been watching the difficulty estimations change a little too much, and I'm convinced that all the sub 2% swings in the next estimated difficulty are just variance, plain and simple. Crossing my fingers, though, I really want to see the diff drop. For once my payouts might... actually... increase!  too many days away to really know, but it moved to (-0.65%) about 40,037,572,339 https://bitcoinwisdom.com/bitcoin/difficultysome are lower http://www.bitcoincharts.comhas it at 39807376875 this is (-1.22%)http://blockexplorer.com/q/estimate39421642542 that is (-2.17%) |
|
|
|
I feel so much safer running this gear then the asic miner prisma. How come? the watts do not creep up. it allows for strong down clock / down volt /down watt settings under 800 watts. No matter how the prisma was set I could not keep it under 1000 watts and over time watts would creep from 950 to 1080 on the low settings. Running 1080 watts with unshielded asics that have been shown to burn and explode caps . At least 3 owners burnt the prismas. not comfortable running them while I leave my home. I don't know if they would have run past the 1080 since they moved from 950 to the 1080 in different settings. The spondoolies are set and stay set. The spondoolies are shielded in case of an exploded cap it would be in the case. |
|
|
|
I spend 746 watts and I am getting 1350 gh or 0.55 watts per gh this allows the lowest fan setting 40..
getting exactly the same. very pleased with this. check your asic temps this is 26 hours garage door shut room temps up to 87f 10 s-3's and 1 sp20e pulling about 4 kwatts and hashing at 5.7th grand total of .7watts per gh this gear earns more then power cost until over a diff of 100 vs current diff of 40 when I add the second sp20 and off load 2 or 3 s-3's the over all watts per gh will drop to .65 per gh when I add a third sp20 and off load more s-3' the watts per gh will be near .6 I will be able to run it at a profit over power for a diff over 120 I feel so much safer running this gear then the asic miner prisma.  |
|
|
|
It shot back up: Estimated Next Difficulty: 40,181,170,149 (-0.29%) I really want to see a negative. Hopefully it goes down a little again. now it is (-.19%) so it may end up +1 or +2 oh well. |
|
|
|
Hey, is it possible for ANY manufacturer to have a machine that can breakeven in BTC in reasonable time (not infinity) or we are post that now and forever?
yes the s-3's have. and I think the sp20's will my batch 1's cost me 1.35 btc they have earned 1.93 BTC and 2.96 NMC before power cost .58 btc profit the nmc is worth a little so .59 btc profit power in my case has been .17 btc so I am up .42btc |
|
|
|
Great thread, thanks for all the detailed information. I am eagerly awaiting the arrival of my first SP20 that I ordered back on the 11th. They finally shipped it today and I should have it on Monday here in FL (I'm hoping for some compensation as it was supposed to have shipped on the 18th). I took the plunge tonight and ordered a second SP20 as I couldn't pass up that Black Friday price drop. Hopefully that one will get here next week too.  yeah at 814 after shipping I grabbed a second one. It will let me move some s-3's out. I will try to run 2 of these and 7 s-3's |
|
|
|
Just rented 50th for 1 hour . my fingers are crossed
let us know how that SP20 fares on mmpool? I will test mmpool on tues. the sp20e works fine. but right now a lot of my gear has rolled over and off mmpool is there an issue with the pool? looks like you may catch up, if not overtake me on shares submitted in the next day. 2 of my SP10's are being shipped back from hosting and my SP20 is still 'on holiday'(™). I just ordered another s20E I used your referral link. |
|
|
|
Great writeup Phil. Having owned an SP10, and dealing with the ear-piercing scream it put out, how do the fans on the SP20 compare in pitch to those fans? I don't mind something a little loud as long as it isn't that awful screeching whine. Don't suppose you could grab a quick audio clip of the fans at a few different speeds and post it could you?
They are just as loud, but personally speaking the pitch on the fans is much more tolerable than the SP10.
I was told to receive a refund on May 22, 2014 and on June 30, 2014.
I ordered on November 2013. Your company still has my $844! I told you I would be fine if you would just send me 1 BTC and it's done. I've been waiting more then 6 months now...
Please send the BTC to: 15TrStnmq3G3NymjDQGPKfvGKGtd9x9945order number ending with: R....24732 to bobsag3 if this is a legit complaint please fix it. @ Dallas5 hopefully if you are legit bobsag3 and thomas will pay you. you can then buy an sp20 for the refund. |
|
|
|
Some follow up.
Some quirks if the settings are .62 , .62, .62, .62 max volts at .67 watts at 175. it does not like to restart so
I changed settings.-------I bit the bullet and boosted the fan from 40 to 60 but I found a good sound damper.
Temp Front / Back T,B
30 °C / 64,61 °C
Fan Speed
60
Start Voltage
0.65 / 0.65 / 0.63 / 0.63
Max Voltage
0.667
Max Watts
182 / 182 / 180 / 180
Solid 1330-1350 at both btcguild and at mmpool
I run it with a s-3 so the 2 unit's on the evga 1300 pull 1100 watts and are doing 1330 + 466 = 1796.
I get nice cool numbers with fan at 60,but it is loud. I have a way to manage sound. see photos of white fire blanket and blue moving blanket. I will pick up a few pieces of sheet metal on black fri.
Thanks for the review. My 2 cents: In your underclocking settings the miner is running cold, and you can set the fans to lower settings for sure. As long as none of your ASICs above 100c, your fan setting is too high  They can go to 115c before throttling starts. thanks for info. but some of the time I close the garage door and I then need the faster fan. for me I can manage the sound of the fan at 60 rpm. this is the asic temps with fan at setting 60 and garage door closed for 15 hours. with these numbers I don't fear a meltdown when I travel out of my home for 1 or 2 days.  |
|
|
|
|
Show Posts
