[CLOSED] SP20 - most efficient miner - ~0.5W/GH - 2 units min!

Flep182

legendary

Activity: 938

Merit: 1007

Quote from: RoadStress on January 08, 2015, 07:45:57 PM

Quote from: RoadStress on January 07, 2015, 05:58:08 PM

Ok so there are 2.94 BTC to be donated. I was thinking of donating them like this:
- 1 BTC to the /r/millionairemakers winner (see: www.reddit.com/r/millionairemakers/comments/2q9ung/santa_is_real_thank_you_all_so_much_i_am_still_in/) ;
- 1 BTC to Hal Finney Bitcoin Fund for ALS Research (see: http://blog.bitcoinfoundation.org/join-teamhal-give100-wbitcoin-to-the-hal-finney-bitcoin-fund-for-als-research/) ;
- 0.5 BTC to ckolivas for cgminer and ckpool;
- 0.5 BTC to Armory.

Any complains/suggestions? 24 hours max.

- https://blockchain.info/tx/206e2ca8efeafa1847dbeb903ebd9441a21695388eeda28e351c1b877186390e
- https://blockchain.info/tx/052143cf2a476a28eab80195f5842363936f17356ed5ef016de0bb6a0c9bbcbf
- https://blockchain.info/tx/42216f397b9ebd80cd9db35614134ece3673d1839cd03956cf553ab41cfe0581
- https://blockchain.info/tx/3cb6358bf0360959d88bf514b39bafdf72e116dd15f20fe1e4c8f9a42fe16621

See you next GB!

Going for a 15 pack? Wink

RoadStress

legendary

Activity: 1904

Merit: 1007

Quote from: RoadStress on January 07, 2015, 05:58:08 PM

Ok so there are 2.94 BTC to be donated. I was thinking of donating them like this:
- 1 BTC to the /r/millionairemakers winner (see: www.reddit.com/r/millionairemakers/comments/2q9ung/santa_is_real_thank_you_all_so_much_i_am_still_in/) ;
- 1 BTC to Hal Finney Bitcoin Fund for ALS Research (see: http://blog.bitcoinfoundation.org/join-teamhal-give100-wbitcoin-to-the-hal-finney-bitcoin-fund-for-als-research/) ;
- 0.5 BTC to ckolivas for cgminer and ckpool;
- 0.5 BTC to Armory.

Any complains/suggestions? 24 hours max.

- https://blockchain.info/tx/206e2ca8efeafa1847dbeb903ebd9441a21695388eeda28e351c1b877186390e
- https://blockchain.info/tx/052143cf2a476a28eab80195f5842363936f17356ed5ef016de0bb6a0c9bbcbf
- https://blockchain.info/tx/42216f397b9ebd80cd9db35614134ece3673d1839cd03956cf553ab41cfe0581
- https://blockchain.info/tx/3cb6358bf0360959d88bf514b39bafdf72e116dd15f20fe1e4c8f9a42fe16621

See you next GB!

mdude77

legendary

Activity: 1540

Merit: 1001

Quote from: RoadStress on January 07, 2015, 05:58:08 PM

Ok so there are 2.94 BTC to be donated. I was thinking of donating them like this:
- 1 BTC to the /r/millionairemakers winner (see: www.reddit.com/r/millionairemakers/comments/2q9ung/santa_is_real_thank_you_all_so_much_i_am_still_in/);
- 1 BTC to Hal Finney Bitcoin Fund for ALS Research (see: http://blog.bitcoinfoundation.org/join-teamhal-give100-wbitcoin-to-the-hal-finney-bitcoin-fund-for-als-research/);
- 0.5 BTC to ckolivas for cgminer and ckpool;
- 0.5 BTC to Armory.

Any complains/suggestions? 24 hours max.

I'd give a lot more to ck and kano. Just about every piece of ASIC hardware out there uses cgminer. That's for a reason.

M

Biffa

legendary

Activity: 3234

Merit: 1221

Not my BTC but they sound like good choices.

TracerX

hero member

Activity: 918

Merit: 1002

Quote from: windpath on January 07, 2015, 06:16:29 PM

Quote from: RoadStress on January 07, 2015, 05:58:08 PM

Ok so there are 2.94 BTC to be donated. I was thinking of donating them like this:
- 1 BTC to the /r/millionairemakers winner (see: www.reddit.com/r/millionairemakers/comments/2q9ung/santa_is_real_thank_you_all_so_much_i_am_still_in/);
- 1 BTC to Hal Finney Bitcoin Fund for ALS Research (see: http://blog.bitcoinfoundation.org/join-teamhal-give100-wbitcoin-to-the-hal-finney-bitcoin-fund-for-als-research/);
- 0.5 BTC to ckolivas for cgminer and ckpool;
- 0.5 BTC to Armory.

Any complains/suggestions? 24 hours max.

I like it.

This looks good to me!

windpath

legendary

Activity: 1258

Merit: 1027

Quote from: RoadStress on January 07, 2015, 05:58:08 PM

Ok so there are 2.94 BTC to be donated. I was thinking of donating them like this:
- 1 BTC to the /r/millionairemakers winner (see: www.reddit.com/r/millionairemakers/comments/2q9ung/santa_is_real_thank_you_all_so_much_i_am_still_in/);
- 1 BTC to Hal Finney Bitcoin Fund for ALS Research (see: http://blog.bitcoinfoundation.org/join-teamhal-give100-wbitcoin-to-the-hal-finney-bitcoin-fund-for-als-research/);
- 0.5 BTC to ckolivas for cgminer and ckpool;
- 0.5 BTC to Armory.

Any complains/suggestions? 24 hours max.

I like it.

RoadStress

legendary

Activity: 1904

Merit: 1007

Ok so there are 2.94 BTC to be donated. I was thinking of donating them like this:
- 1 BTC to the /r/millionairemakers winner (see: www.reddit.com/r/millionairemakers/comments/2q9ung/santa_is_real_thank_you_all_so_much_i_am_still_in/) ;
- 1 BTC to Hal Finney Bitcoin Fund for ALS Research (see: http://blog.bitcoinfoundation.org/join-teamhal-give100-wbitcoin-to-the-hal-finney-bitcoin-fund-for-als-research/) ;
- 0.5 BTC to ckolivas for cgminer and ckpool;
- 0.5 BTC to Armory.

Any complains/suggestions? 24 hours max.

TracerX

hero member

Activity: 918

Merit: 1002

Quote from: RoadStress on January 05, 2015, 12:01:50 PM

Quote from: Biffa on January 05, 2015, 04:54:36 AM

Group buy finished now.

You can buy individually @ $595 + delivery or you can buy a pack of 3 @ $498 ea + free delivery.

Group Buy is CLOSED! Thank you everyone!

Thank you!

RoadStress

legendary

Activity: 1904

Merit: 1007

Quote from: Biffa on January 05, 2015, 04:54:36 AM

Group buy finished now.

You can buy individually @ $595 + delivery or you can buy a pack of 3 @ $498 ea + free delivery.

Group Buy is CLOSED! Thank you everyone!

Biffa

legendary

Activity: 3234

Merit: 1221

Quote from: digitizing on January 04, 2015, 09:33:38 PM

How to buy this groupbouy ?
should I request to OP or just buy
from this link http://www.spondoolies-tech.com/products/roadstresss-sp20-special-holiday-gb ?

Group buy finished now.

You can buy individually @ $595 + delivery or you can buy a pack of 3 @ $498 ea + free delivery.

mike9

newbie

Activity: 50

Merit: 0

Quote from: MrTeal on January 04, 2015, 11:42:55 PM

Quote from: mike9 on January 04, 2015, 11:33:34 PM

Quote from: padrino on January 04, 2015, 05:58:17 PM

Quote from: mike9 on January 04, 2015, 03:28:39 PM

Quote from: raskul on January 04, 2015, 06:39:23 AM

Quote from: bgibso01 on January 02, 2015, 11:44:36 PM

...

divide by 0.92 to get a more accurate at-the-wall

I haven't found the ~0.9 divisor to be accurate. I used 0.9 to estimate running two SP20's off one EVGA 1600 G2. The ASIC Stats page showed ~620W each—and they ran, though one took a few tries to boot. Then I bought a Kill-A-Watt - and what I calculated (1240/0.9) to be 1378 at the wall, actually measured 1620 (120V). I now run 3 SP20's off of two 1600's and like the increased headroom, but have since been pairing new SP20's with 1300W G2's, which I find the best bang for the buck.

To get an accurate estimate you need to look at the loading estimate for the PSU, off of 120V on a higher load the efficiency will fade fast... I outfitted my house with some 240V circuits last year and run all of my PSUs off of those circuits, nets me over 10% in power savings..

Ah, so I might have had that 0.9 'efficiency' powering only one unit, but I lost efficiency as the load increased with the second SP20 - netting me closer to the rated 0.8? Got it, good to know, thank you!

No good PSU should drop down to 80% at full load. For something like the EVGA 1300W PSU, tests show it getting ~91% at 50% load and 87.5% at full load. 3.5 percentage points is still a decent drop, but nothing like 10%.

You're right, I looked up the 80 Plus spec, 80 Plus Gold is 90% @ 50% load, and 87% @ 100% on 115V. So the difference in wattage reported on the ASIC Stats page versus ATW is not PSU, or not solely, but a mix of PSU and miner 'other'? I'll have to do some more kill-a-watt testing...

MrTeal

legendary

Activity: 1274

Merit: 1004

Quote from: mike9 on January 04, 2015, 11:33:34 PM

Quote from: padrino on January 04, 2015, 05:58:17 PM

Quote from: mike9 on January 04, 2015, 03:28:39 PM

Quote from: raskul on January 04, 2015, 06:39:23 AM

Quote from: bgibso01 on January 02, 2015, 11:44:36 PM

Quote from: Biffa on January 02, 2015, 09:28:04 PM

Quote from: bgibso01 on January 02, 2015, 07:52:34 PM

Thanks again for the GB. Just grabbed another 4 units. Not sure where I'll stick them yet, but these last few days have shown me that these are quality units and the SP-T support folks really put forth an effort to help.

Quick question: When the ASIC tab shows its using 890 watts, do I need to divide that by .8 to get an approximation at the wall assuming 80% efficient PSU?

I don't know how it's doing it, but at stock with 2 Corsair HX850, one unit is running 1683 @ 890w. Seems pretty good to me and close enough to 1.7T.

No the PSU is only delivering 80% of what its pulling from the wall to give you 890Watts, its closer to 1120W at the wall

K, I figured I needed to to divide by .8 to get the wall pull. Just wanted to make sure.

divide by 0.92 to get a more accurate at-the-wall

I haven't found the ~0.9 divisor to be accurate. I used 0.9 to estimate running two SP20's off one EVGA 1600 G2. The ASIC Stats page showed ~620W each—and they ran, though one took a few tries to boot. Then I bought a Kill-A-Watt - and what I calculated (1240/0.9) to be 1378 at the wall, actually measured 1620 (120V). I now run 3 SP20's off of two 1600's and like the increased headroom, but have since been pairing new SP20's with 1300W G2's, which I find the best bang for the buck.

To get an accurate estimate you need to look at the loading estimate for the PSU, off of 120V on a higher load the efficiency will fade fast... I outfitted my house with some 240V circuits last year and run all of my PSUs off of those circuits, nets me over 10% in power savings..

Ah, so I might have had that 0.9 'efficiency' powering only one unit, but I lost efficiency as the load increased with the second SP20 - netting me closer to the rated 0.8? Got it, good to know, thank you!

No good PSU should drop down to 80% at full load. For something like the EVGA 1300W PSU, tests show it getting ~91% at 50% load and 87.5% at full load. 3.5 percentage points is still a decent drop, but nothing like 10%.

mike9

newbie

Activity: 50

Merit: 0

Quote from: padrino on January 04, 2015, 05:58:17 PM

Quote from: mike9 on January 04, 2015, 03:28:39 PM

Quote from: raskul on January 04, 2015, 06:39:23 AM

Quote from: bgibso01 on January 02, 2015, 11:44:36 PM

Quote from: Biffa on January 02, 2015, 09:28:04 PM

Quote from: bgibso01 on January 02, 2015, 07:52:34 PM

Thanks again for the GB. Just grabbed another 4 units. Not sure where I'll stick them yet, but these last few days have shown me that these are quality units and the SP-T support folks really put forth an effort to help.

Quick question: When the ASIC tab shows its using 890 watts, do I need to divide that by .8 to get an approximation at the wall assuming 80% efficient PSU?

I don't know how it's doing it, but at stock with 2 Corsair HX850, one unit is running 1683 @ 890w. Seems pretty good to me and close enough to 1.7T.

No the PSU is only delivering 80% of what its pulling from the wall to give you 890Watts, its closer to 1120W at the wall

K, I figured I needed to to divide by .8 to get the wall pull. Just wanted to make sure.

divide by 0.92 to get a more accurate at-the-wall

I haven't found the ~0.9 divisor to be accurate. I used 0.9 to estimate running two SP20's off one EVGA 1600 G2. The ASIC Stats page showed ~620W each—and they ran, though one took a few tries to boot. Then I bought a Kill-A-Watt - and what I calculated (1240/0.9) to be 1378 at the wall, actually measured 1620 (120V). I now run 3 SP20's off of two 1600's and like the increased headroom, but have since been pairing new SP20's with 1300W G2's, which I find the best bang for the buck.

To get an accurate estimate you need to look at the loading estimate for the PSU, off of 120V on a higher load the efficiency will fade fast... I outfitted my house with some 240V circuits last year and run all of my PSUs off of those circuits, nets me over 10% in power savings..

Ah, so I might have had that 0.9 'efficiency' powering only one unit, but I lost efficiency as the load increased with the second SP20 - netting me closer to the rated 0.8? Got it, good to know, thank you!

bgibso01

legendary

Activity: 1218

Merit: 1001

Quote from: digitizing on January 04, 2015, 09:33:38 PM

How to buy this groupbouy ?
should I request to OP or just buy
from this link http://www.spondoolies-tech.com/products/roadstresss-sp20-special-holiday-gb ?

Read the OP instructions and use the link.

digitizing

member

Activity: 108

Merit: 10

How to buy this groupbouy ?
should I request to OP or just buy
from this link http://www.spondoolies-tech.com/products/roadstresss-sp20-special-holiday-gb ?

padrino

legendary

Activity: 1428

Merit: 1000

https://www.bitworks.io

Quote from: mike9 on January 04, 2015, 03:28:39 PM

Quote from: raskul on January 04, 2015, 06:39:23 AM

Quote from: bgibso01 on January 02, 2015, 11:44:36 PM

Quote from: Biffa on January 02, 2015, 09:28:04 PM

Quote from: bgibso01 on January 02, 2015, 07:52:34 PM

Thanks again for the GB. Just grabbed another 4 units. Not sure where I'll stick them yet, but these last few days have shown me that these are quality units and the SP-T support folks really put forth an effort to help.

Quick question: When the ASIC tab shows its using 890 watts, do I need to divide that by .8 to get an approximation at the wall assuming 80% efficient PSU?

I don't know how it's doing it, but at stock with 2 Corsair HX850, one unit is running 1683 @ 890w. Seems pretty good to me and close enough to 1.7T.

No the PSU is only delivering 80% of what its pulling from the wall to give you 890Watts, its closer to 1120W at the wall

K, I figured I needed to to divide by .8 to get the wall pull. Just wanted to make sure.

divide by 0.92 to get a more accurate at-the-wall

To get an accurate estimate you need to look at the loading estimate for the PSU, off of 120V on a higher load the efficiency will fade fast... I outfitted my house with some 240V circuits last year and run all of my PSUs off of those circuits, nets me over 10% in power savings..

I haven't found the ~0.9 divisor to be accurate. I used 0.9 to estimate running two SP20's off one EVGA 1600 G2. The ASIC Stats page showed ~620W each—and they ran, though one took a few tries to boot. Then I bought a Kill-A-Watt - and what I calculated (1240/0.9) to be 1378 at the wall, actually measured 1620 (120V). I now run 3 SP20's off of two 1600's and like the increased headroom, but have since been pairing new SP20's with 1300W G2's, which I find the best bang for the buck.

RoadStress

legendary

Activity: 1904

Merit: 1007

Last day! Hop in.

mike9

newbie

Activity: 50

Merit: 0

Quote from: raskul on January 04, 2015, 06:39:23 AM

Quote from: bgibso01 on January 02, 2015, 11:44:36 PM

Quote from: Biffa on January 02, 2015, 09:28:04 PM

Quote from: bgibso01 on January 02, 2015, 07:52:34 PM

Thanks again for the GB. Just grabbed another 4 units. Not sure where I'll stick them yet, but these last few days have shown me that these are quality units and the SP-T support folks really put forth an effort to help.

Quick question: When the ASIC tab shows its using 890 watts, do I need to divide that by .8 to get an approximation at the wall assuming 80% efficient PSU?

I don't know how it's doing it, but at stock with 2 Corsair HX850, one unit is running 1683 @ 890w. Seems pretty good to me and close enough to 1.7T.

No the PSU is only delivering 80% of what its pulling from the wall to give you 890Watts, its closer to 1120W at the wall

K, I figured I needed to to divide by .8 to get the wall pull. Just wanted to make sure.

divide by 0.92 to get a more accurate at-the-wall

I haven't found the ~0.9 divisor to be accurate. I used 0.9 to estimate running two SP20's off one EVGA 1600 G2. The ASIC Stats page showed ~620W each—and they ran, though one took a few tries to boot. Then I bought a Kill-A-Watt - and what I calculated (1240/0.9) to be 1378 at the wall, actually measured 1620 (120V). I now run 3 SP20's off of two 1600's and like the increased headroom, but have since been pairing new SP20's with 1300W G2's, which I find the best bang for the buck.

bgibso01

legendary

Activity: 1218

Merit: 1001

I noticed SP-T lowered the price of the 15 & 3 pack to less than the GB. Can I get a little love thrown back my way since my order for 4 hasn't been filled yet? Kiss

raskul

sr. member

Activity: 434

Merit: 250

Quote from: bgibso01 on January 02, 2015, 11:44:36 PM

Quote from: Biffa on January 02, 2015, 09:28:04 PM

Quote from: bgibso01 on January 02, 2015, 07:52:34 PM

Thanks again for the GB. Just grabbed another 4 units. Not sure where I'll stick them yet, but these last few days have shown me that these are quality units and the SP-T support folks really put forth an effort to help.

Quick question: When the ASIC tab shows its using 890 watts, do I need to divide that by .8 to get an approximation at the wall assuming 80% efficient PSU?

I don't know how it's doing it, but at stock with 2 Corsair HX850, one unit is running 1683 @ 890w. Seems pretty good to me and close enough to 1.7T.

No the PSU is only delivering 80% of what its pulling from the wall to give you 890Watts, its closer to 1120W at the wall

K, I figured I needed to to divide by .8 to get the wall pull. Just wanted to make sure.

divide by 0.92 to get a more accurate at-the-wall

Topic: [CLOSED] SP20 - most efficient miner - ~0.5W/GH - 2 units min! (Read 22707 times)