smooth
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Activity: 2968
Merit: 1198
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May 15, 2014, 10:25:46 PM |
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Can we move the coupon discussion to one of the two available forums (one for free coupons, one for those who wants to sell)? Re S2, can someone post about how noisy they are (preferably in db, but also in relative terms as well) to evaluate possible location for units? Same room, basement, garage, another building.  Readings in db from two units running in a garage were ~70db at a distance of ~18" and ~68db at a distance of ~3m. How fast are your fans running? Mine run at about 1900-2100 and it is nowhere near that loud. Maybe your ambient is higher? |
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klondike_bar
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Activity: 2128
Merit: 1005
ASIC Wannabe
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May 15, 2014, 10:27:57 PM |
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Holy cow! That's freaking loud!
+1 mine seems about as loud as 3 antminer S1 units, but the 140mm fans mean its a slightly lower pitch, more of a loud 'whoosh' noise from the air as mentioned above. |
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User705
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Activity: 896
Merit: 1006
First 100% Liquid Stablecoin Backed by Gold
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May 16, 2014, 02:19:03 AM |
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Those that received the recent units. Has the quality of these improved?
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Biffa
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Activity: 3220
Merit: 1220
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May 16, 2014, 02:21:19 AM |
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Those that received the recent units. Has the quality of these improved?
They have changed the way the cards are secured in the case with metal braces holding them in position. |
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mdude77
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Activity: 1540
Merit: 1001
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May 16, 2014, 02:27:26 AM |
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Those that received the recent units. Has the quality of these improved?
Mine arrived intact. Power cord is wrong one. Power supply is still under powered. It's far from quiet, as it's advertised. I have a few Xs on one of my chains. Avg hash rate dropped to 930gh/s before I swapped in a 1300w PSU. Now it's about 950gh/s, I'm hoping it'll increase as time goes on. But it uses less power than 5 OCd S1s. M |
I mine at Kano's Pool because it pays the best and is completely transparent! Come join me! |
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dalenorman2005
Member
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Activity: 64
Merit: 10
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May 16, 2014, 02:29:01 AM |
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Am I the only one who's noticed the new PDF on Bitmaintech's website with step-by-step instructions on how to solder capacitors directly to each hashing board....
"Guideline for soldering Capacitors to S2 hash board to fix chip disabling issue"
eek.... happy long weekend to me...
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gurki
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Activity: 102
Merit: 10
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May 16, 2014, 02:43:10 AM |
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Question guys, one s2 should run fine in a typical 120v 15a outlet, is that correct?
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dalenorman2005
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Activity: 64
Merit: 10
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May 16, 2014, 02:46:38 AM |
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One S2 draws about 1000 watts, so 1000w / 115 volts = 8.7 amps. So yes, a single 15 amp circuit can run one S2, but be careful what else is on that circuit... most household circuits have other outlets on them.
208v is better. 240 is better still. the closer to 250v, the better, i believe.
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mdude77
Legendary
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Activity: 1540
Merit: 1001
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May 16, 2014, 02:52:11 AM |
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What does this mean on a chain? never saw a dash before.
oooooooo oooooooo oooooooo oooooooo oooo-ooo oooooooo oooooooo oooooooo
It's chain 2. Is that from the top, near the PSU, or from the bottom?
M
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I mine at Kano's Pool because it pays the best and is completely transparent! Come join me! |
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TracerX
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May 16, 2014, 03:14:07 AM |
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What does this mean on a chain? never saw a dash before.
oooooooo oooooooo oooooooo oooooooo oooo-ooo oooooooo oooooooo oooooooo
It's chain 2. Is that from the top, near the PSU, or from the bottom?
M
Chain two is second farthest from the PSU. #10 is closest to the PSU, #1 farthest away. Edit: The dash is probably okay, it'll more than likely clear when you reboot the device or restart cgminer (i.e. when you Save and Apply mining configurations). |
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TracerX
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May 16, 2014, 03:16:38 AM |
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Am I the only one who's noticed the new PDF on Bitmaintech's website with step-by-step instructions on how to solder capacitors directly to each hashing board....
"Guideline for soldering Capacitors to S2 hash board to fix chip disabling issue"
eek.... happy long weekend to me...
Me too, maybe. I've got a half board of x's. |
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wpgdeez
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May 16, 2014, 03:24:46 AM |
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One S2 draws about 1000 watts, so 1000w / 115 volts = 8.7 amps. So yes, a single 15 amp circuit can run one S2, but be careful what else is on that circuit... most household circuits have other outlets on them.
208v is better. 240 is better still. the closer to 250v, the better, i believe.
my power is 220-240 i assume these are volts. i often wonder how to get the Amps of an item. is it watts x volts = amps or something similar? i worked out on my fuseboard what each fuse could manage Watts wise, and so far ive not had any electrical concerns but the Amps of any given unit seems to confuse me...such that i feel its more a guesstimate than a calculation... Volts X Amps = Watts 240v x 10 amp = 2400 watts |
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wpgdeez
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May 16, 2014, 03:51:16 AM |
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Am I the only one who's noticed the new PDF on Bitmaintech's website with step-by-step instructions on how to solder capacitors directly to each hashing board....
"Guideline for soldering Capacitors to S2 hash board to fix chip disabling issue"
eek.... happy long weekend to me...
That sucks  . Factory defect on this batch or engineering oversight? How many blades are in an S2? 4 caps per blade need to be added if I understand correct? |
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mark978
Newbie
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Activity: 13
Merit: 0
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May 16, 2014, 04:24:22 AM |
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Am I the only one who's noticed the new PDF on Bitmaintech's website with step-by-step instructions on how to solder capacitors directly to each hashing board....
"Guideline for soldering Capacitors to S2 hash board to fix chip disabling issue"
eek.... happy long weekend to me...
That sucks . Factory defect on this batch or engineering oversight? How many blades are in an S2? 4 caps per blade need to be added if I understand correct? Maybe half the chips are disabled, and this + a 2nd PSU is part of bitmains post about being able to OC each S2 to 1.8-2Thash cheaply? |
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dropt
Legendary
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Activity: 1512
Merit: 1000
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May 16, 2014, 04:48:13 AM |
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Maybe half the chips are disabled, and this + a 2nd PSU is part of bitmains post about being able to OC each S2 to 1.8-2Thash cheaply?
No. |
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gurki
Member
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Activity: 102
Merit: 10
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May 16, 2014, 04:49:28 AM |
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One S2 draws about 1000 watts, so 1000w / 115 volts = 8.7 amps. So yes, a single 15 amp circuit can run one S2, but be careful what else is on that circuit... most household circuits have other outlets on them.
208v is better. 240 is better still. the closer to 250v, the better, i believe.
Thanks alot! |
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dropt
Legendary
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Activity: 1512
Merit: 1000
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May 16, 2014, 05:43:07 AM |
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so according to this formula;
my 1000w S2 divided by 230V = 4.347A
or more accurately 1040W / 230V = 4.521A
so 1040W / 240V = 4.333A
three different Amp readings from 1 S2 using different Voltage...
That's pretty much how math works there buds. |
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digitizing
Member
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Activity: 108
Merit: 10
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May 16, 2014, 07:51:22 AM |
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how much the price declared by bitmain for custom purpose ?
and what is the description ?
is it still like S1 which is "Computer Game Gateway" ?
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wpgdeez
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May 16, 2014, 02:44:45 PM |
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Am I the only one who's noticed the new PDF on Bitmaintech's website with step-by-step instructions on how to solder capacitors directly to each hashing board....
"Guideline for soldering Capacitors to S2 hash board to fix chip disabling issue"
eek.... happy long weekend to me...
That sucks . Factory defect on this batch or engineering oversight? How many blades are in an S2? 4 caps per blade need to be added if I understand correct? This has scared me away from buying a S2 until Bitmaintech can comment on what the actual problem is. |
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SockMunkee
Newbie
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Activity: 52
Merit: 0
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May 16, 2014, 05:25:28 PM |
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I have still have 5 S2 coupons and 5 S1 coupons available for donation.
Just PM me here!
Thanks,
~Girard
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