Topic: ANTMINER S4 Discussion and Support Thread - page 76. (Read 301481 times)
Remember that if you're overclocking you [officially] lose your warranty, and I personally wouldn't go up more than 1 voltage step on the stock PSU.
Thank you very very much!
Did somebody get higher hashrates? Cooling, power from the wall and psu (i have changed) is no problem.
Did somebody get higher hashrates? Cooling, power from the wall and psu (i have changed) is no problem.
How can i overlock the S4. Whicht Frey and Volt settings?
225M, voltage 0725 gives me ~2.25 TH/s with 0.01% HW. Board 3 is running at about 60 degrees though (other boards below 55).
Edit: make sure to do the math with power consumption. I have to admit I haven't measured it at the wall yet, but I have fairly cheap power. It might not be worth it depending on your costs. Also consider the risk of killing the PSU.
How can i overlock the S4. Whicht Frey and Volt settings?
Believe what they wanted to say was 16 AWG wire, not 16 amp?
I believe the same.
Don't think so: 10 AWG is generally thought of as 30 amp, 12 AWG as 20 amp, 14 AWG as 15amp, and 16 AWG as 10amp.
Cassey
This is true when dealing with solid single-conductor wires meant for permanent installation in walls and ceilings and whatnot.
However most all wall-to-appliance power cables use multi-strand wire for flexibility, which muddies the water somewhat. A multi-strand "wire" cannot carry as much current as a solid single-conductor wire of the same gauge can.
With AC that is an incredibly incorrect statement. Google AC skin effect.
As for capacity of stranded vs solid, depends on how it us um, gauged (pun intended). AWG when applied to electrical wire is not a hard number, there is a fair bit of tolerance in the unit when applied to stranded wire. Comparing capacity of wires exactly the same diameter in inches or mm and depending on strand thickness (changes fill factor) yes solid technically can carry more current from DC up to several kHz. That is why in many parts of the world and for larger cables the actual equivalent copper cross section of a wire or cable is used for ratings.
With reference to AC which is what we were discussing...
Not sure where you have your degree from, but well, perhaps you need to edit all the books and websites that tell a different, lets call it story ...
http://en.wikipedia.org/wiki/Skin_effect
Has anyone tried the 100 or 125 MHz clock settings provided by Bitmain? I'm just looking for feedback if everything is working properly, and if the power from the wall is as advertised? Is there any risk from underclocking?
I'm also curious about the 200Mhz with the lower voltage setting. If the lower voltage gets the same GH/s while using less electricity, then why not make it the default? Thoughts? Any response from Bitmain?
I would like to have a couple S4's using just under 1000W each at the wall. I'm trying to run 2x S4's on a single 20A 120V circuit (temporarily), so I don't want them exceeding 2000W aggregate. Does anyone have recommended settings to achieve this? I'm guessing the MHz should be around 160. What is the formula for determining what voltage to use based on MHz setting? It's like one of those IQ tests and unfortunately I can't figure this one out. Burn on me.... lol
You could probably get a frequency code from the s3 thread that would apply to the s4.
My guess is 160-170mhz at 0.65-0.67v would achieve that
Has anyone tried the 100 or 125 MHz clock settings provided by Bitmain? I'm just looking for feedback if everything is working properly, and if the power from the wall is as advertised? Is there any risk from underclocking?
I'm also curious about the 200Mhz with the lower voltage setting. If the lower voltage gets the same GH/s while using less electricity, then why not make it the default? Thoughts? Any response from Bitmain?
I would like to have a couple S4's using just under 1000W each at the wall. I'm trying to run 2x S4's on a single 20A 120V circuit (temporarily), so I don't want them exceeding 2000W aggregate. Does anyone have recommended settings to achieve this? I'm guessing the MHz should be around 160. What is the formula for determining what voltage to use based on MHz setting? It's like one of those IQ tests and unfortunately I can't figure this one out. Burn on me.... lol
Believe what they wanted to say was 16 AWG wire, not 16 amp?
I believe the same.
Don't think so: 10 AWG is generally thought of as 30 amp, 12 AWG as 20 amp, 14 AWG as 15amp, and 16 AWG as 10amp.
Cassey
This is true when dealing with solid single-conductor wires meant for permanent installation in walls and ceilings and whatnot.
However most all wall-to-appliance power cables use multi-strand wire for flexibility, which muddies the water somewhat. A multi-strand "wire" cannot carry as much current as a solid single-conductor wire of the same gauge can.
With AC that is an incredibly incorrect statement. Google AC skin effect.
As for capacity of stranded vs solid, depends on how it us um, gauged (pun intended). AWG when applied to electrical wire is not a hard number, there is a fair bit of tolerance in the unit when applied to stranded wire. Comparing capacity of wires exactly the same diameter in inches or mm and depending on strand thickness (changes fill factor) yes solid technically can carry more current from DC up to several kHz. That is why in many parts of the world and for larger cables the actual equivalent copper cross section of a wire or cable is used for ratings.
Believe what they wanted to say was 16 AWG wire, not 16 amp?
I believe the same.
Don't think so: 10 AWG is generally thought of as 30 amp, 12 AWG as 20 amp, 14 AWG as 15amp, and 16 AWG as 10amp.
Cassey
This is true when dealing with solid single-conductor wires meant for permanent installation in walls and ceilings and whatnot.
However most all wall-to-appliance power cables use multi-strand wire for flexibility, which muddies the water somewhat. A multi-strand "wire" cannot carry as much current as a solid single-conductor wire of the same gauge can.
With AC that is an incredibly incorrect statement. Google AC skin effect.
Another bug i found
if you set up your voltage or freq data then the beeper settings gone to default.
you must to set voltage or freq value and save then goto the general settings page, unselect beeper, save again.
pfffffff my stomach is burning
if you set up your voltage or freq data then the beeper settings gone to default.
you must to set voltage or freq value and save then goto the general settings page, unselect beeper, save again.
pfffffff my stomach is burning
Believe what they wanted to say was 16 AWG wire, not 16 amp?
I believe the same.
Don't think so: 10 AWG is generally thought of as 30 amp, 12 AWG as 20 amp, 14 AWG as 15amp, and 16 AWG as 10amp.
Cassey
This is true when dealing with solid single-conductor wires meant for permanent installation in walls and ceilings and whatnot.
However most all wall-to-appliance power cables use multi-strand wire for flexibility, which muddies the water somewhat. A multi-strand "wire" cannot carry as much current as a solid single-conductor wire of the same gauge can.
Guys i must to clear this o-x what are these means;
every hash Cell must feed proper voltage and frequence so,
if you see - , this means = you dont feed this cell with proper voltage
(use higher Voltage,because some devices used on high voltage before we bougt)
if you see x , this means = your working frequence did not enought of live for Cell
(use higher Freq,because some devices used on high freq before we bougt)
if you see nothing, this means = This ASIC cell is not communicate with FPGA
(weak soldering or DEATH, if you lucky Re oven the hash board)
or you can try this when you see x or - => use web interafce goto Miner Configuration>General Settings then just click Save&Apply
you will see x or - gone because FPGA is resetted.
have a nice days.
every hash Cell must feed proper voltage and frequence so,
if you see - , this means = you dont feed this cell with proper voltage
(use higher Voltage,because some devices used on high voltage before we bougt)
if you see x , this means = your working frequence did not enought of live for Cell
(use higher Freq,because some devices used on high freq before we bougt)
if you see nothing, this means = This ASIC cell is not communicate with FPGA
(weak soldering or DEATH, if you lucky Re oven the hash board)
or you can try this when you see x or - => use web interafce goto Miner Configuration>General Settings then just click Save&Apply
you will see x or - gone because FPGA is resetted.
have a nice days.
BTW all - I'm happy to report that http://www.multicoinpool.org 's sysop has modified his pool to remember the last difficulty a miner had when switching coins.
This has resulted in 3 days of no errors and no dips in output on my S4s.
Diff is sitting at 8K on (2) of my boxes and 4k on (1).
Cassey
This has resulted in 3 days of no errors and no dips in output on my S4s.
Diff is sitting at 8K on (2) of my boxes and 4k on (1).
Cassey
Believe what they wanted to say was 16 AWG wire, not 16 amp?
That would make sense because 16 ga cords are rated for 13 amps which is a bit more (not much) more than a s4 pulls off of 120v line.A very good source - and free generally next-day shipping is McMaster http://www.mcmaster.com/#iec-cords/=uu3yek I generally use these or their 3' long brethren http://www.mcmaster.com/#71535k65/=uu3zp7
Nice reference. I suspect the amperage ratings are higher than the typical ones I use because the cords are so short. Distance does matter.
Cheers,
Cassey
I don't work for bitmain but have you tried opening the case and checking all the ribbon cables and power cables to make sure they are connected properly? It looks like 1 board is not getting power and 1 is barely getting any....either the PSU was not clipped in properly or some wiring from what I can see in the pic . Re-seat all the ribbon cables and power connectors and if its still giving that result, try a different power outlet in another room if possible. Im willing to help...2 weeks with a machine down really sucks...I know how bitmain support is as Im still waiting for response on an issue myself
I had a much more severe case of that when I moved my machine across my basement. Don't know if opening the case and pushing on cables fixed it (I didn't find any loose), or just the downtime and power restart associated with doing so, but the probably went away when I put the case base together.
Cassey
Believe what they wanted to say was 16 AWG wire, not 16 amp?
I believe the same.
Don't think so: 10 AWG is generally thought of as 30 amp, 12 AWG as 20 amp, 14 AWG as 15amp, and 16 AWG as 10amp.
Cassey
Can someone from bitmain please provide me with support?? I've contacted everyone I can, and I'm still not getting any help. I have an S4 that needs to be RMAed, I've had it for 2 weeks now and have been just about ignored for as long.
I've already said this, contact [email protected] for an RMA. Don't contact the US office direct as all they'll have to do is try and make a ticket over the phone anyway.
Just emailed them too. Thought dealing with Yoshi was a step above [email protected].
Thanks dogie.
Can someone from bitmain please provide me with support?? I've contacted everyone I can, and I'm still not getting any help. I have an S4 that needs to be RMAed, I've had it for 2 weeks now and have been just about ignored for as long.
I've already said this, contact [email protected] for an RMA. Don't contact the US office direct as all they'll have to do is try and make a ticket over the phone anyway.
Believe what they wanted to say was 16 AWG wire, not 16 amp?
That would make sense because 16 ga cords are rated for 13 amps which is a bit more (not much) more than a s4 pulls off of 120v line.A very good source - and free generally next-day shipping is McMaster http://www.mcmaster.com/#iec-cords/=uu3yek I generally use these or their 3' long brethren http://www.mcmaster.com/#71535k65/=uu3zp7
Chip specs... https://bitmaintech.com/support.htm?pid=007201406210452505098o0UWHKV0661
And the temp of my 3 running S4
http://prntscr.com/5c40ij
And the temp of my 3 running S4
http://prntscr.com/5c40ij
Im so sorry you are confusing the CHIP specs with the chip voltage specs when used in the S4....glad I could help clear that up....google is your friend keep on reading!
*facepalm*
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