No, the PSU does not have a 1250 limit. The SP3X programming imposes limits, which can be overridden. The override voids the warranty though, if the supply voltage drops below 218V and the PSU is stressed over the acceptable limits.
You might be interested in the best efficiency .. but not everyone is. "free electricity" locations, and/or hosted environments care more about mining stability than performance. If you can make the unit run stable at top output .. there's the setting some other people might be interested in.
okay I read the spec sheet very carefully and I have run plenty of psu's past spec's but as I read the spec sheet from the psu company if you run 1250 watts draw you are exceeding the psu's warranty limits. Now this means in order to run to the max gh on the sp31 you must be voiding the psu's warranty numbers. to me spondoolies advertisment for the sp31 is not clear enough for overclocker's. now I am using this pdf as my guide https://www.artesyn.com/power/assets/ds1200_ds_1219707774.pdfand it looks like this is the psu in the sp31. i get that I can go beyond its rating. I just think that the spondoolies advert is not clear enough to say doing that is like speeding down a highway far beyond the posted speed limits. Personally I am only going to buy sp20's I am at the game of max efficiency . If you have a farm with good cooling and want to run the gear beyond spec I am fine with that. I just think the add makes you think you can get 4.7 th or more within the psu's spec's . I would like to see if anyone is running their machine at 4.7th and 2300 watts or even 2400 watts. or if you can show me where in the pdf it reads that these psus can do 1250 watts 24/7/365 I read 12 volts 100 amps max out put so 2 are 2400watts max rating or 1200 each. So while you may crank the fuck out of the sp31 and pull 2600 watts and get your 4.7th you have voided the psu warranty. to do it. That's a generic datasheet, and you don't have the one for the PSU version the units are shipped with. The PSU's shipped from the SPT have special firmware, and were a custom batch of DS1200-3-002. Please find the correct datasheet for reference. When you power the unit at 220V 50Hz, the PSU limits are different than when you power it at 110V 60Hz. Higher voltage means generally less heat .. I was reading here repeatedly that 1360W output when the unit is powered at 220V+ is the spec limit. The SP3x units have a self-adjusting mechanism, not present in SP20. That is because the software in the SP3x unit "talks" with the PSU and changes parameters at run-time. The override, lets those parameters be changed irrespective of the PSU supply voltage, which may drive the unit outside the spec'd ranges. With your SP20, the power supply is "dumb" and there's no serial communication between the PSU and the unit. That means, that your power supply does not adapt to the required power draw like the Emerson/Murata does in a SP3x. Moreover, the product was initial designed and tested for Israel/Europe power supply voltages and spec'd as such (where ~220V is common). You're looking at the unit from the situation you're in, using 110V in the average north american household. Hence, the situation is different and maybe that's why (i guess) it is not clear enough for you. it is fully clear now .. if you go back just a bit post wise you will see I ask the exact make and model of the psu . now that you mention that the psu is not a stock -generic emerson 1200 and is cabable of 1360watts at 240 volts I will stand down. |
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so that psu has a 1250 watt limit from 110 volts to 218 volts? is this the psu? https://www.artesyn.com/power/power-supplies/websheet/401/ds1200-serieshttps://www.artesyn.com/power/assets/ds1200_ds_1219707774.pdf If it is you are really pushing beyond it limits at anything over 1200 watts. that is the spec sheet above. If I owned it I would not use more then 1050 watts on a 120 volt setup and I would use 1200 watts max on a 220 volt setup. I don't understand why you don't simply tell people that the high setting are like driving your car at 150 KPH or 90MPH yeah you can do it but it is not that safe and burns a shit load more gas. If you drive at 100 KPH or 60 MPH it is easy and the gas mileage is better. I you were really clear about this you would have less people hurting the gear they own. Just like the sp20 yeah I can get mine to do 1725gh with the fans at 100 and using an evga 1600 p2 psu with a garage door open my power at the kwatt plug is 1300 watts. so 1300/1725 = .75 gh right now I am doing 1328 gh and 720 watts or 720/ 1328 = .542 watts per gh you really should make that clear to people . No, the PSU does not have a 1250 limit. The SP3X programming imposes limits, which can be overridden. The override voids the warranty though, if the supply voltage drops below 218V and the PSU is stressed over the acceptable limits. You might be interested in the best efficiency .. but not everyone is. "free electricity" locations, and/or hosted environments care more about mining stability than performance. If you can make the unit run stable at top output .. there's the setting some other people might be interested in. okay I read the spec sheet very carefully and I have run plenty of psu's past spec's but as I read the spec sheet from the psu company if you run 1250 watts draw you are exceeding the psu's warranty limits. Now this means in order to run to the max gh on the sp31 you must be voiding the psu's warranty numbers. to me spondoolies advertisment for the sp31 is not clear enough for overclocker's. now I am using this pdf as my guide https://www.artesyn.com/power/assets/ds1200_ds_1219707774.pdfand it looks like this is the psu in the sp31. i get that I can go beyond its rating. I just think that the spondoolies advert is not clear enough to say doing that is like speeding down a highway far beyond the posted speed limits. Personally I am only going to buy sp20's I am at the game of max efficiency . If you have a farm with good cooling and want to run the gear beyond spec I am fine with that. I just think the add makes you think you can get 4.7 th or more within the psu's spec's . I would like to see if anyone is running their machine at 4.7th and 2300 watts or even 2400 watts. or if you can show me where in the pdf it reads that these psus can do 1250 watts 24/7/365 I read 12 volts 100 amps max out put so 2 are 2400watts max rating or 1200 each. So while you may crank the fuck out of the sp31 and pull 2600 watts and get your 4.7th you have voided the psu warranty. to do it. |
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Could be because I'm on 210V rather than 240V?
Socket Voltage
209/209 volt
Max Watts
1360 / 1360
PSU's are Emerson
-----BOARD-0-----
PSU[EMERSON1200]: 1376->1252w[1252 1248 1248] (->1211w[1211 1211 1211]) (lim=1250) 0c cooling:0/0x0
-----BOARD-1-----
PSU[EMERSON1200]: 1408->1252w[1248 1244 1252] (->1174w[1174 1174 1174]) (lim=1250) 0c cooling:0/0x0
Yes, it's because you're on 208V. Notice that your machine is configured to use 1360W max per PSU, but the software is artificially limiting it to 1250W. That's because these PSUs are less efficient (i.e. generate more heat) on lower voltages, so they can't deliver as much power, so Zvi hard-limited them in order to reduce the chance of PSU failure. Spondoolies hasn't done much testing with 208V, so they don't know what the PSU limits should be, but they know 1250 is safe. If you want to try to squeeze more performance out of it, you can bypass the 1250W limit with echo 1 > /etc/mg_ignore_110_fcc Just make sure to reduce your PSU limits in the Settings page first. My suspicion is you'll be able to get about 1280W to 1330W out of those PSUs at that voltage, but I've never tried. 1360W is probably too high. Yet wierdly on my SP30's I was getting between 1330 and 1360 on the same PSU's and the same power circuit. I wonder if the SP31's have more conservative limits on the PSU's I thought they would have less because the claimed TH output was higher needing more power to get there etc. Update: Upgraded to 2.5.33 and now the bottom PSU runs at 1360 but the top is stuck at 1250 still, Hashrate nearly 4.7TH Going to manually set top PSU at 1330 and see if it sticks. (Top and bottom being how they are shown in the interface and asic stats) 1330 didn't work, top still lim=1250, wierd.
Uptime:447 | FPGA ver:62
-----BOARD-0-----
PSU[EMERSON1200]: 1376->1244w[1244 1244 1244] (->1214w[1214 1214 1214]) (lim=1250) 0c cooling:0/0x0
-----BOARD-1-----
PSU[EMERSON1200]: 1488->1360w[1352 1356 1360] (->1257w[1257 1257 1257]) (lim=1360) 0c cooling:0/0x0
Your limit of 1250 is because your voltage is under 218V. If you want to force more, you can use the fcc_disable flag people mentioned here - note that that operation is not covered by our warranty (!!!) - that is stretching the PSU manufacturers recommendation. so that psu has a 1250 watt limit from 110 volts to 218 volts? is this the psu? https://www.artesyn.com/power/power-supplies/websheet/401/ds1200-serieshttps://www.artesyn.com/power/assets/ds1200_ds_1219707774.pdf If it is you are really pushing beyond it limits at anything over 1200 watts. that is the spec sheet above. If I owned it I would not use more then 1050 watts on a 120 volt setup and I would use 1200 watts max on a 220 volt setup. I don't understand why you don't simply tell people that the high setting are like driving your car at 150 KPH or 90MPH yeah you can do it but it is not that safe and burns a shit load more gas. If you drive at 100 KPH or 60 MPH it is easy and the gas mileage is better. I you were really clear about this you would have less people hurting the gear they own. Just like the sp20 yeah I can get mine to do 1725gh with the fans at 100 and using an evga 1600 p2 psu with a garage door open my power at the kwatt plug is 1300 watts. so 1300/1725 = .75 gh right now I am doing 1328 gh and 720 watts or 720/ 1328 = .542 watts per gh you really should make that clear to people . |
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They are not bitmaintech only 2 sales made. I am in NJ pm me if you want 1 or 2. s-3's Also if you want to buy from the real website I have some 50$ coupons for s-3's they are must buy 2 on the real website https://www.bitmaintech.com/product.htmthis is what 2 cost to NJ with a pair of $50 coupons if you are in NYC I am guessing the same  |
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I noticed that when you place an order at SPT, there is some space where you can enter discount coupons.
Are they really offering discount coupons ?
I just bought 2 SP20, I would buy 2 more if they would offer me some discount coupons
They have done in the past, mainly if the units didn't perform to spec or is late shipping. We've also had an existing customer coupon before as well. I'm also pretty sure that if you buy a big enough order that you will get a discount code. But this isn't Bitmain, and there are good reasons why not  yeah coupons are rare. but the diff sticking around at 40 and coin staying at 370 usd is far far far better then a coupon. |
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philipma1957: Ok thank you, now i´m going to see if it works, been 1 hour running now! but i made some cool drawings for a cooling system, going to check tomorrow what the material cost and if it could be realistic
I have 4 units and 3 s-3's I use winter weather and a garage door a mover's blanket to muffle sound and the open garage door for heat removal  I am running 5000 watts and 7.7th in the garage temps are 89 f  I can stack 1 more sp20 and 1 more s-3  20 inch box fan helps cool gear.  |
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well here we are on sunday morning price is 370 usd and diff dropping just a bit. frankly I thought we would have a 4% bump so far this drop is very nice. https://bitcoinwisdom.com/bitcoin/difficulty (-1.52%)http://www.bitcoincharts.com/ (-0.64%)If we keep the -1% and go under 40 diff on the 16th or 17th We may not get another jump until JAN 1 2015 which would mean from Nov 5 to Jan 1 we would have been basically flat lined close to a diff of 40 . Plug that into your calculators and mining looks a little better then the negative talk we have heard. a 55 day period with 0 growth looks like a very good chance . WOW |
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It depends on your pool.. mmpool.org will take multiple machines with one worker name. I use 4 sp20's on the same worker name. also kano and ck the writers of cgminer have the pool below I have combined multiple machines to one worker with them. https://bitcointalk.org/index.php?topic=789369.0 |
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yeah I have sp20's and s-3's they are the way to go. The s-3 can be made to be quieter then the sp20. If your power is cheap go heavy on s-3's light on sp20's If you have more costly power do more sp20's. I have some 50$ coupons for s-3's let me know if you want 2. The minimum s-3 order is 2. Read my thread on the sp20. I will try to run 5 sp20's and 6 s-3's. underclock them for a total of 9th https://bitcointalk.org/index.php?topic=872014.0 |
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Will you offer hosting?
Where are you located? general a state or if not US what country not an exact address.
If you how what will you charge?
If you mine just for yourself what machines?
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Do you have new photos Phil?
yes I do I have been cleaning and fixing the garage better.----- right now I have 4 sp20's and 3 s-3's under the movers blanket. plus 2 more s-3's to the far right about 7.7 th and 5000watts in my garage I used a cement tile board behind the sp20's for fire control. found it at lowes under 10 bucks  same blanket to muffle sound and the open garage door for heat removal I am running 5000 watts and 7.7th in the garage temps are 89 f stainless steel abounds in this photo  I can stack 1 more sp20 and 1 more s-3 20 inch box fan helps cool gear. |
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I have quite of heating problem, i lowered the voltage its getting over 35 :/ what ever i do its heating to much
lower your watts. Temp Front / Back T,B 36 °C / 74,77 °C Fan Speed 40---------------------------------------- Make your fan at 80 try all the other settingsStart Voltage 0.68 / 0.68 / 0.66 / 0.66 Max Voltage 0.69 Max Watts 175 / 170 / 175 / 170 low setting my power is only 753 at the k watt meter my fan is at 40! still really good temps and watts per gh  temps are great  |
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http://www.bitcoincharts.com/ ( - 0.22%)Blocks 333189 Total BTC 13.580M Difficulty 40007470271 Estimated 39916066515 in 1467 blks Network total 268307.595 Thash/s Blocks/hour 5.62 / 640 s https://bitcoinwisdom.com/bitcoin/difficulty (-0.55%)Bitcoin Difficulty: 40,007,470,271 Estimated Next Difficulty: 39,788,774,306 (-0.55%) Adjust time: After 1467 Blocks, About 10.3 days Hashrate(?): 289,096,822 GH/s Block Generation Time(?): 1 block: 10.1 minutes 3 blocks: 30.3 minutes 6 blocks: 1.0 hours Updated: 17:40 (5.2 minutes ago) I can live with these numbers. I earn money over my power bill . So it can stay under 40 diff if it wants to.
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Hi.Can anyone tell me how to OC the SP20 ?
Just got 2 of them, took me 2 mins to configure them, excelent working pieces of hardware
I have 1 SP20 that is run by 2x 1000W PSUs, and I belive there is some room to OC this one
Can anyone tell me the exact stepts I need to do in order to OC ?
Thanks !
go to settings page set fan to 90 Speed Set your starting voltage no more then 10 mv under your stable working voltage (from ASIC stats page) Start Volts Unit 1(0.64-0.80) try .715Start Volts Unit 2(0.64-0.80) try .715 Start Volts Unit 3(0.58-0.80) try .71 Start Volts Unit 4(0.58-0.80) try .71 Set your Maximum voltage to 0.790 for maximum mining or less for economy mode Maximum Voltage (0.580-0.790) try .73 Set PSU power to 120 and let the system learn the actual PSU limit. Max PSU Power Unit 1 (70W - 288W) try 235Max PSU Power Unit 2 (70W - 288W) try 235 Max PSU Power Unit 3 (70W - 288W) try 235 Max PSU Power Unit 4 (70W - 288W) try 235 Save check the asic stats page look for temps 115 and lower |
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well it may lose money or it may make money.
I don't know much about that hosting service and if you can point to pools of your choice.
I also do not know if you can sell the gear in a few months since you own it but they are holding it.
I would say hold the coin it earns and hope for a coin price spike in the next few months. Also find out if you want to sell it want they will allow you to do.
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Is the EVGA SuperNOVA 1300G2 strong enough to power a SP20 full tilt? Or maybe even something smaller?
If you can keep the unit in a cold place. The evga 1300 does 250 watt setting with zero issues. In my setup 250 to 288 setting make my gear too hot. But as the winter comes and I get colder weather I could do it. This gear really wastes power from 240 to 288 settings. So I under clock to 180 watts Then I add an s-3 so the evga 1300 gives me an sp20 at 1350 and an s-3 at 450 = 1800 at 1150 watts |
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If you want the math to seem easier try my pool calc page - that's been around for a very long time Just enter your hash rate as the pool and as your miner to see the details from both points of view - as it is here (note that the pool is TH/s but the miner is GH/s) http://tradebtc.net/bitcalc.php thanks for the link |
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Can I mine with a Block Erupter? I mean it, seriously. Can one BE gets me 'in the door' like a dollar lottery ticket?
The odds..I know. But would it work?
yes here i am with a few ice fury sticks and a u1 stick http://solo.ckpool.org/users/1JdC6Xg3ajT3rge3FgPNSYYFpmf53Vbtjethe math is really difficult 1 out of 180,000 for a day. but these cost me very little to mine about 5 cents a day. so for 5 cents a day why not |
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I wonder who swithched OFF ~30ph in basically one day. It plunged from 304 to 274PH.
Network was kind of weird in the last month or so-sudden surges followed by deep plunges in hashing speed.
I still stay by my conviction that it would pay for someone to purchase calls on bitcoin, then purchase hashing, switch it off and see a spike in bitcoin price soon afterwards. Rinse and repeat.
A 30PH dip can easily be attributed to variance due to bad luck... especially when that missing 30PH suddenly shows back up on the network a day or two later. Well if you look at the 512 block hashrate chart, you will see that the hashrate is falling very quickly, likely more so then what I would personally attribute to "luck". I would say that some large farm is slowly being taken offline or inefficient miners are being taken offline as their owners are seeing they are no longer profitable. I would predict that we see another small decline in the difficulty Anything under 1% is good for me. Bitwisdom is showing "Estimated Next Difficulty: 40,249,613,605 (+0.61%)" right now. Will be one great month for miners if it could do little difficulty increase for a few in a row. With winter could not have come at a better time. with diff at 40 if it slowly grows to 50 by early spring lets say March 24 2015 it would be a really nice winter. that would be 2.85% diff avg and it could do this |
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Ok i have no idea how to insert picture, but mine is
Temp: 23c / 72.66
Fan speed: 90
Start Voltage 0.69 / 0.69 / 0.69 / 0.69
Max Voltage 0.75
Max Watts 288 / 288 / 288 / 288
Mining rate atm 1598.04Ghs
i think i will need to find a good idea to cool the room more when i have my other units running.
drop those settings fan 90 try 0.69/ 0.69 / 0.68 / 0.68 max voltage 0.72 max watts 240/240/240/240 see what you hash with that. Ok i´m moving to another location, will try 240 i tried to have it in a closed room but then the heat went to 33, and i did not want to any risk so i just placed them near the window and temperature dropped i see on screenshots units are running to 35 degree is that okay? yes it is fine the most accurate heat numbers are on this screenshot. these taken are after I closed the garage door from 11pm to 8 am all my numbers are lower the the 125 max column I am 85c ---- (125c) my 85 is way under the 125 85c----- (125c) " " " 85c----- (125c) " " " 110c----- (125c) 110 is still under 125 85c------- (125c) really good 85c------- (125c) really good 105c------ (125c) still good 105c------ (125c) still good  |
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