[Antminer S1 Sales open] Price changes daily, now 0.414 BTC for 180GH/s

[flounderella]

Corsair AX1200 works good for 2 and EVGA 1300G2 works perfectly with 3. OC'd these draw 400 watts.

Great! Thanks!

Another option is to underclock and run 4 off a single PSU.

Run the math: you may find that it makes more economical sense to save $100-$200 on additional PSUs, rather than getting an extra 10-15% hashrate by overclocking. Everyone's situation is different.

I run 4@325MHz on an EVGA 1300G2, and another 4@325MHz on a Seasonic X-1250. These combinations use ~1400W at the wall (@120V) as measured with a Kill-A-Watt meter, which is fine for those PSUs and is within the continuous rated limit (80% of 15A/120V: 12A or 1440W) of a single 15A/120V household circuit.

Some other combinations I run: 2@350MHz (stock) on a Corsair HX750, 2@350MHz on a Corsair AX760, and 2@375MHz (overclocked) on a spare Seasonic X-1250 (which is overkill for 2 Ants).

How much hash do you get running at the three clock speeds plus temperatures? Its still winters, so heating not an issue but apartment already feeling like an oven

Assuming no dead chips, you can expect roughly:

325MHz: 167 GH/s
350MHz: 179 GH/s
375MHz: 192 GH/s

These numbers will vary a bit across hardware and firmware revisions. In other words, YMMV.

And ofcourse save on electricity bills and psu ... makes sense

[Syke]

Another option is to underclock and run 4 off a single PSU.

Run the math: you may find that it makes more economical sense to save $100-$200 on additional PSUs, rather than getting an extra 10-15% hashrate by overclocking. Everyone's situation is different.

Agreed. With Bitmain dropping the prices so low, the cost of the PSU is becoming significant.

[flounderella]

for new in antiminer S1.
if you need PSU, don't look Watt only.
please check Ampere in 12V.
Minimum requirement Ampere in 12 V is 30 A

This is a good point.  I recommend Corsair power supplies - at least 750 watt models or higher.  The CX750M is a modular design so you'll have less cable clutter and it supplies 46 Amps on the +12V rail.  Whichever power supply you're using, look at the +12V DC Output amperage and ensure that it's greater than 30 Amps.

Even something like this will work but I like the CX750 better

http://www.newegg.com/Product/Product.aspx?Item=N82E16817139028

that is an 80+ bronze. is not a good recomendation for psu because of it's effiency of 80% .. can do better and buy 92% effiecient psu's like rm1000 can host two oced ants.. i saw someone post an 80+ bronnze psu was pulling 400 watts per non oced ant . should choose 92% efficient psu to mine with imo . choice of psu is most important for longterm mining considerations.

agreed

Have you guys looked at what the actual power savings are in comparison to the added cost of a >bronze supply?  For almost every attempt I've made to justify higher efficiency supplies the savings just never make it worth while.

well lets see if i can calculate non-oced ants.. the difference is about 50 watts per ant between 80% efficiency (aprx 400 watts) from 92% efficiency (aprx 350 watts) from earlier screenshot of an 80% efficient psu in this thread:

(second post down screenshot 80% bronze psu ants running @400 watts each) https://bitcointalk.org/index.php?topic=417159.2460

two ants per psu equals around 100 watts saved. that is about $10 - $12 per month per every two ants @.10kw ?? cx750 psu @$90.00 per ant (newegg) initial cost while rm1000 is @$100 per ant initial (newegg). in addition can oc two ants on rm1000 .

Well you convinced me. I live in a high power cost region (Con Ed charges 0.10c/kw for supply and 0.10c/kw for delivery), so just ordered a Corsair RM1000.

http://www.newegg.com/Product/Product.aspx?Item=N82E16817139057

Side note. I run 2 OC-ed Ants on Corsair AX1200. Do you think it can take a third (maybe non OC-ed) or not advisable

[jeppe]

How long does it take for them to actually ship from china ??
I ordered mine yesterday when will they have shipped it ??
Thanks,
JT

[flounderella]

How long does it take for them to actually ship from china ??
I ordered mine yesterday when will they have shipped it ??
Thanks,
JT

I ordered 2 on Monday and 1 yesterday morning. They are both shipped and enroute via UPS. Delivery to NY by Friday.

[jeppe]

How long does it take for them to actually ship from china ??
I ordered mine yesterday when will they have shipped it ??
Thanks,
JT

I ordered 2 on Monday and 1 yesterday morning. They are both shipped and enroute via UPS. Delivery to NY by Friday.

Did you get tracking info ??
And did you also receive the confirmation email??

[Epoch]

And ofcourse save on electricity bills and psu ... makes sense

Don't misunderstand; I'm not suggesting that underclocking Ants makes sense for *everyone*. It may in some situations; in others, it may make more sense to run stock (or overclock). The key is to understand your options. Then you can make the 'right' decision for your specific case.

If it made sense for me to do so, I'd be running all of my Ants at 375MHz. But it doesn't. Firstly, I have a fixed and very strict power budget. I have a fixed number of power circuits. I juggle the Ant frequencies to maximize my use of what's available to me. Then I have a finite number (and capacities) of power supplies.

Yes, I can go out and buy some others which would allow me to run 2 ants at 375MHz instead of 350MHz. But the extra 13 GH/s (per Ant) would give me only $1/day ... roughly $20/month ... it would take several months for that increased hashrate to recover the cost of the extra PSU. I'd have to live with increased noise, increased heat ... so in my view, for my particular case, buying an extra power supply so I can overclock a couple of Ants doesn't make sense.

[flounderella]

How long does it take for them to actually ship from china ??
I ordered mine yesterday when will they have shipped it ??
Thanks,
JT

I ordered 2 on Monday and 1 yesterday morning. They are both shipped and enroute via UPS. Delivery to NY by Friday.

Did you get tracking info ??
And did you also receive the confirmation email??

No email after paying. Only got the email today and just for one. But on the bitmain website, they are both shipped and have a ups tracking no

[jeppe]

How long does it take for them to actually ship from china ??
I ordered mine yesterday when will they have shipped it ??
Thanks,
JT

I ordered 2 on Monday and 1 yesterday morning. They are both shipped and enroute via UPS. Delivery to NY by Friday.

Did you get tracking info ??
And did you also receive the confirmation email??

No email after paying. Only got the email today and just for one. But on the bitmain website, they are both shipped and have a ups tracking no

Thanks,
So i hope i will get tracking no today or tomorrow

[flounderella]

How long does it take for them to actually ship from china ??
I ordered mine yesterday when will they have shipped it ??
Thanks,
JT

I ordered 2 on Monday and 1 yesterday morning. They are both shipped and enroute via UPS. Delivery to NY by Friday.

Did you get tracking info ??
And did you also receive the confirmation email??

No email after paying. Only got the email today and just for one. But on the bitmain website, they are both shipped and have a ups tracking no

Thanks,
So i hope i will get tracking no today or tomorrow

Yeah I think they are probably really busy with all the increased orders the last week due to price drop

[meornot69]

How stable do they run??? Can they run for weeks without restart

yes, they run, but you need to check them once a day.

[wpgdeez]

for new in antiminer S1.
if you need PSU, don't look Watt only.
please check Ampere in 12V.
Minimum requirement Ampere in 12 V is 30 A

This is a good point.  I recommend Corsair power supplies - at least 750 watt models or higher.  The CX750M is a modular design so you'll have less cable clutter and it supplies 46 Amps on the +12V rail.  Whichever power supply you're using, look at the +12V DC Output amperage and ensure that it's greater than 30 Amps.

Even something like this will work but I like the CX750 better

http://www.newegg.com/Product/Product.aspx?Item=N82E16817139028

that is an 80+ bronze. is not a good recomendation for psu because of it's effiency of 80% .. can do better and buy 92% effiecient psu's like rm1000 can host two oced ants.. i saw someone post an 80+ bronnze psu was pulling 400 watts per non oced ant . should choose 92% efficient psu to mine with imo . choice of psu is most important for longterm mining considerations.

agreed

Have you guys looked at what the actual power savings are in comparison to the added cost of a >bronze supply?  For almost every attempt I've made to justify higher efficiency supplies the savings just never make it worth while.

well lets see if i can calculate non-oced ants.. the difference is about 50 watts per ant between 80% efficiency (aprx 400 watts) from 92% efficiency (aprx 350 watts) from earlier screenshot of an 80% efficient psu in this thread:

(second post down screenshot 80% bronze psu ants running @400 watts each) https://bitcointalk.org/index.php?topic=417159.2460

two ants per psu equals around 100 watts saved. that is about $10 - $12 per month per every two ants @.10kw ?? cx750 psu @$90.00 per ant (newegg) initial cost while rm1000 is @$100 per ant initial (newegg). in addition can oc two ants on rm1000 .

Well you convinced me. I live in a high power cost region (Con Ed charges 0.10c/kw for supply and 0.10c/kw for delivery), so just ordered a Corsair RM1000.

http://www.newegg.com/Product/Product.aspx?Item=N82E16817139057

Side note. I run 2 OC-ed Ants on Corsair AX1200. Do you think it can take a third (maybe non OC-ed) or not advisable

1200 watts is cutting it close for OC. I run 3 OC'd Ants off an EVGA 1300 no problem, my AX1200 cant handle it. 2 AX 1200's should be good for 5 ants though, one of the ANTS will have a blade powered by each supply.

[rograz]

1200 watts is cutting it close for OC. I run 3 OC'd Ants off an EVGA 1300 no problem, my AX1200 cant handle it. 2 AX 1200's should be good for 5 ants though, one of the ANTS will have a blade powered by each supply.

1200W will handle 3 of them just fine as long as its single rail and not a POS psu (your AX really should be able to handle it). I've had 2 OCd ants running from a ax760 for weeks now without any problems (780W load at the wall so actual load on the psu should be 720-730W).

[grizlyadams74]

bitmaintech is a scam do not buy
no costumer service
1 month to get a miner, 48 hours my ass
hope you dont get a bad miner good luck getting it fixed.
I thank sushi is on drugs and cant do his job

[flounderella]

1200 watts is cutting it close for OC. I run 3 OC'd Ants off an EVGA 1300 no problem, my AX1200 cant handle it. 2 AX 1200's should be good for 5 ants though, one of the ANTS will have a blade powered by each supply.

1200W will handle 3 of them just fine as long as its single rail and not a POS psu (your AX really should be able to handle it). I've had 2 OCd ants running from a ax760 for weeks now without any problems (780W load at the wall so actual load on the psu should be 720-730W).

Thanks guys

[rograz]

1200 watts is cutting it close for OC. I run 3 OC'd Ants off an EVGA 1300 no problem, my AX1200 cant handle it. 2 AX 1200's should be good for 5 ants though, one of the ANTS will have a blade powered by each supply.

1200W will handle 3 of them just fine as long as its single rail and not a POS psu (your AX really should be able to handle it). I've had 2 OCd ants running from a ax760 for weeks now without any problems (780W load at the wall so actual load on the psu should be 720-730W).

Thanks guys

One thing worth nothing is that you need avoid running an entire antminer from "double" pci-e cables with 2 connectors, max one blade/cable.

[flounderella]

1200 watts is cutting it close for OC. I run 3 OC'd Ants off an EVGA 1300 no problem, my AX1200 cant handle it. 2 AX 1200's should be good for 5 ants though, one of the ANTS will have a blade powered by each supply.

1200W will handle 3 of them just fine as long as its single rail and not a POS psu (your AX really should be able to handle it). I've had 2 OCd ants running from a ax760 for weeks now without any problems (780W load at the wall so actual load on the psu should be 720-730W).

Thanks guys

One thing worth nothing is that you need avoid running an entire antminer from "double" pci-e cables with 2 connectors, max one blade/cable.

Yup makes sense.

[MrTeal]

for new in antiminer S1.
if you need PSU, don't look Watt only.
please check Ampere in 12V.
Minimum requirement Ampere in 12 V is 30 A

This is a good point.  I recommend Corsair power supplies - at least 750 watt models or higher.  The CX750M is a modular design so you'll have less cable clutter and it supplies 46 Amps on the +12V rail.  Whichever power supply you're using, look at the +12V DC Output amperage and ensure that it's greater than 30 Amps.

Even something like this will work but I like the CX750 better

http://www.newegg.com/Product/Product.aspx?Item=N82E16817139028

that is an 80+ bronze. is not a good recomendation for psu because of it's effiency of 80% .. can do better and buy 92% effiecient psu's like rm1000 can host two oced ants.. i saw someone post an 80+ bronnze psu was pulling 400 watts per non oced ant . should choose 92% efficient psu to mine with imo . choice of psu is most important for longterm mining considerations.

agreed

Have you guys looked at what the actual power savings are in comparison to the added cost of a >bronze supply?  For almost every attempt I've made to justify higher efficiency supplies the savings just never make it worth while.

well lets see if i can calculate non-oced ants.. the difference is about 50 watts per ant between 80% efficiency (aprx 400 watts) from 92% efficiency (aprx 350 watts) from earlier screenshot of an 80% efficient psu in this thread:

(second post down screenshot 80% bronze psu ants running @400 watts each) https://bitcointalk.org/index.php?topic=417159.2460

two ants per psu equals around 100 watts saved. that is about $10 - $12 per month per every two ants @.10kw ?? cx750 psu @$90.00 per ant (newegg) initial cost while rm1000 is @$100 per ant initial (newegg). in addition can oc two ants on rm1000 .

Except that the minimum for 80+ Bronze is 85% at 50% load, not 80%. That Bronze rated Corsair CX600 has been tested to run 350-400W at a bit over 87% efficiency, so for ~370W DC draw (what mine run at when set to 400MHz), that's 425W AC for the CX600@87% and 407W AC per Ant for the RM1000@91%. That's a savings of 18W per unit, or 36W together. For me at ~$0.15/kWh, or a savings of a little under $4 per month for two Ants.

I'd probably still go with the RM1000 just because it looks like a really nice supply and it's not group regulated, but it's a long payoff for that vs two CX600's if the price difference is $100.

[Epoch]

One thing worth nothing is that you need avoid running an entire antminer from "double" pci-e cables with 2 connectors, max one blade/cable.

Generally good advice, but not necessarily true in all cases. If all you have are double cables, it may work anyway. It doesn't hurt to try; if the PSU can't handle it, its overcurrent protection will safely shut it down.

An ATX PSU is guaranteed to supply AT LEAST 300W on a double PCIe cable; that is the PCIe specification (150W per 8-pin connector). In practice, most will provide significantly more before current limiting kicks in.

Some examples of where double cables can work: I run 4 Ants on a Seasonic X-1250 using 4 double cables. And I run 4 Ants on an EVGA 1300 G2 using 4 double cables. These work fine. I am mildly underclocking these to 325MHz to stay within the 1250/1300W limit.

[MrTeal]

One thing worth nothing is that you need avoid running an entire antminer from "double" pci-e cables with 2 connectors, max one blade/cable.

Generally good advice, but not necessarily true in all cases. If all you have are double cables, it may work anyway. It doesn't hurt to try; if the PSU can't handle it, its overcurrent protection will safely shut it down.

An ATX PSU is guaranteed to supply AT LEAST 300W on a double PCIe cable; that is the PCIe specification (150W per 8-pin connector). In practice, most will provide significantly more before current limiting kicks in.

Some examples of where double cables can work: I run 4 Ants on a Seasonic X-1250 using 4 double cables. And I run 4 Ants on an EVGA 1300 G2 using 4 double cables. These work fine. I am mildly underclocking these to 325MHz to stay within the 1250/1300W limit.

I think most people are more concerned with cable heating and voltage drop than the ability of the PSU to run it. Most PSUs run 18 gauge (@ 6.4mOhm/ft) for their wiring, so if you have 2 ft of cable before the first plug and are pulling 10A on each wire you're looking at a 0.256V drop just across the cable, and 7.7W spent just heating the cable.

Even running at 400MMHz isn't going to be an issue where it stops working with one cable to an Ant, but it's a little disconcerting to have your cable feel noticeably warm.