ANTMINER C1 Discussion and Support Thread

[IITravel01]

If you want to greatly reduce the dust intake on the C1, this might just be the item (to substitute with the front fan grill).  http://www.amazon.com/Silverstone-Tek-Filter-Cooling-FF123B/dp/B00ARB5E8U/ref=pd_sim_e_3?ie=UTF8&refRID=17TF269TN9NWFT2XP716

[soy]

Am just about to fire mine up too.  Have just done nmap.  I've run the pump of course in getting the air out but about to apply power to the miner.  I'm trying this with 4 PCIE-8 connectors not 8 only because I don't have the other 4 yet.  If the wires show heat, excessive current, I'll shut down an S3 and get the connectors I need. ...

so, 10.45 amps sound right?

P.F. 0.69, 857-860 Watts, 10.49 amps.

[opentoe]

Hello

Opentoe, I know one person with the same problem with one C1 bath 1.

We configure the miners with standard voltage 0725, the chips to 256Mhz save and aply. Wait 1 minute for save and apply and turn off the miner 1 minutes. Turn on and wait 10 minutes. In the hash rate is less of 900Gh, we continue turn off, wait 1 minute and turn on again until the hast rate is near or 1Th.

Please, is important wait 1 minutes  between turn off and turn on.

Regards.
Antuam.

Really? This is actually a batch 2 unit, but anything to try I guess. The longer it runs, the lower the hashrate. So I'm thinking a buggy firmware with a memory leak that's killing it because when I power cycle it, jumps back up to 1005TH and then slowly starts dropping, real slow.

I'll try this "trick" once it gets back down to 900 again.

Thanks.

Which pool is it on? I don't think its the solution but worth a shot.

I tried Ghash and BTCGUILD. Both steadily dropped the hashing rate to 900 on two of thrm now. Regretting a little a bought 6 of them dince only two are performing at spec.

I don't have a solution for this unfortunately, although the only indication is that you have 4/6 units which degrade over time and its not a widely reported problem. Can you think of anything environmental that might be contributing? Circuits maxing out / getting warmer? I'm sure you're setup is good though.

I have 6 of these running. I know how to maintain them and get them running. Since it appears to be only happening on one unit, likely a hardware issue. The last thing I need is down time on any hardware or I'll never break even in years.

[irobb]

I am using the upgraded firmware. I am getting near 1000 only if I lower my freq to 243.75 and voltage at 0730.  If I use the upgraded firmware settings of 250 freq with 0760 voltage, the first chain shows a few x's after a few minutes...

Thoughts?

[soy]

I am using the upgraded firmware. I am getting near 1000 only if I lower my freq to 243.75 and voltage at 0730.  If I use the upgraded firmware settings of 250 freq with 0760 voltage, the first chain shows a few x's after a few minutes...

Thoughts?

What's your coolant?  I know with the S3 I got from a Florida reseller that under performs, when it warms up I get an X.  Are any of your hoses crimped?  Could be the thermal compound isn't well spread on your water block.

I'm using the stock firmware, stock wiring, distilled water coolant,  and my pool shows 1071 GH/s.  Ambient room temp 64°F.

[dogie]

I am using the upgraded firmware. I am getting near 1000 only if I lower my freq to 243.75 and voltage at 0730.  If I use the upgraded firmware settings of 250 freq with 0760 voltage, the first chain shows a few x's after a few minutes...

Thoughts?

What batch is yours from? [Speculation] I believe some of the original C1s are happier on the older settings (including mine).

[dogie]

Am just about to fire mine up too.  Have just done nmap.  I've run the pump of course in getting the air out but about to apply power to the miner.  I'm trying this with 4 PCIE-8 connectors not 8 only because I don't have the other 4 yet.  If the wires show heat, excessive current, I'll shut down an S3 and get the connectors I need. ...

4 should be okay as long as they're on individual wires, and you're checking for heat.

[dogie]

Hi guys -

Just put my C1 together. Prior to upgrading to latest firmware, all chains showed X across each row...  Now I show this weird thing in chain 1 and a few X's on chain 4...

http://postimg.org/image/3yowupfdz/

Any thoughts?  I am using RM-1000 PSU.

What voltage and speed are they on now? Different firmwares have different defaults.

[dogie]

In other places it mentions copper in the radiator.

What other places?

Everything I have read says that it is a an Aluminum Radiator.
On  both the Bitmain website and the Syscooling website.

On the original Syscooling listings. You can look inside of the radiators yourself if you want, its coated with *something*. Some of the connections are also coated inside. As I said before though, its not really worth risking it for the small cost involved with preventing problems.

[irobb]

Hi guys -

Just put my C1 together. Prior to upgrading to latest firmware, all chains showed X across each row...  Now I show this weird thing in chain 1 and a few X's on chain 4...

http://postimg.org/image/3yowupfdz/

Any thoughts?  I am using RM-1000 PSU.

What voltage and speed are they on now? Different firmwares have different defaults.

243.75 freq
0730 voltage

959.53GH average.

[IITravel01]

Mine is running at stock 250M at 0725 (original firmware default) with 51 temp. and HW 0.0000% (the GH/S (avg.) is just below the spec. at 1,005).

[dunand]

My default is at 250M and 760.

[IITravel01]

My default is at 250M and 760.

That's the default voltage of the newer (2nd) firmware, I would try the original voltage at 250M and see if that works.

[DiCE1904]

Anyone have the amazon link for the  PSU motherboard wire caps ?
The ones that come standard with the EVGA PSUs so I dont have to use a paperclip.

Thanks

[IITravel01]

Try ebay for the AntMiner ones that have a light and switch, much better.  http://www.ebay.com/itm/Antminer-ASIC-Bitcoin-ATX-Jumper-Switch-Run-PSU-Power-Supply-w-o-Motherboard-/281545916639?pt=US_Power_Cables_Connectors&hash=item418d71c0df

[DiCE1904]

Try ebay for the AntMiner ones that have a light and switch, much better.  http://www.ebay.com/itm/Antminer-ASIC-Bitcoin-ATX-Jumper-Switch-Run-PSU-Power-Supply-w-o-Motherboard-/281545916639?pt=US_Power_Cables_Connectors&hash=item418d71c0df

Bitchn, thanks

[soy]

Interesting.  36.9°F outside.  Inside is 63.9°.  Maybe it's my connection or maybe it's the pool but my hashrate goes though a long slow rise then fall and so on.  The temperature of the water out port of the water block is cool to the touch while the air pushed thru the C1 is quite warm on exit, warmer than the exiting water.  I just unplugged the single fan so the two closest radiator fans to the ports run.  I wonder if letting the C1 mounted fan run at 12v continually would be a good idea.  Since disconnecting the single radiator fan the C1 mounted fan has started changing speed fairly often.  The hashrate has come up but that might just be the observed cycle.

[dunand]

Anyone have the amazon link for the  PSU motherboard wire caps ?
The ones that come standard with the EVGA PSUs so I dont have to use a paperclip.

Thanks

You prefer a long motherboard cable tangling and trapping dust more than a little paperclip?

Happy new year you all!

[soy]

Odd.  GUI Fan2 speed indication never changes from 1200 although I hear it increasing and decreasing.

[dogie]

Interesting.  36.9°F outside.  Inside is 63.9°.  Maybe it's my connection or maybe it's the pool but my hashrate goes though a long slow rise then fall and so on.  The temperature of the water out port of the water block is cool to the touch while the air pushed thru the C1 is quite warm on exit, warmer than the exiting water.  I just unplugged the single fan so the two closest radiator fans to the ports run.  I wonder if letting the C1 mounted fan run at 12v continually would be a good idea.  Since disconnecting the single radiator fan the C1 mounted fan has started changing speed fairly often.  The hashrate has come up but that might just be the observed cycle.

Odd.  GUI Fan2 speed indication never changes from 1200 although I hear it increasing and decreasing.

If its annoying you can try plugging the fan into the other header that it can reach. You'll have to take the case off unfortunately (and all the PCI-E's) to get to it though.

You sure you pump seems to be running okay? I can't think of a reason why the fluid exhaust would be cooler than the air exhaust.