Quote from: philipma1957 on August 02, 2014, 04:18:20 PM

Quote from: lluixi on August 02, 2014, 04:04:14 PM

Quote from: TracerX on August 02, 2014, 03:44:37 PM

Quote from: lluixi on August 02, 2014, 03:39:05 PM

Quote from: lluixi on August 02, 2014, 09:38:39 AM

Hi!

Im a new miner from Spain, Barcelona. Best regards for all!

I have two questions. I hope you can help me because i dont have any idea to find the solution of my problems.

I have one Antminer S3 B3 and one is working with 2 PCI Connectors @250Mhz and hashs at 500gh/s but in one hour and a half the hash decreases to 360-380 gh/s. How is it possible? The status of miner appears to be OK, without any "X" or "-"... Somebody knows whats happening? Sad

if i reboot the S3 the hashing push up to 500GH/s but in one hour and half decrease too... Sad

In the status no HW errors and nothing strange. Only i can saw is a Little decrease of temperature... 47-44 grades @500GH/s VS 46-40 @365-380 GH/s.

I observed that my miner works more stable with 2 PCIEX connectors tan 4. How is it posible??

And the second question is for the second S3 B3.

I tested 250Mhz, 237Mhz, 225 and default 218.75 but always i get a lot of HW errors. How can fix the HW errors?? The only speed that no cause HW errors is 212Mhz.
I think the temperature is not the problema because its working at 43-43 grades.

Two S3 antiminers are working with the last available firmware of Bitmaintech and are new. Arrived this week.

Can you help me? Sad

PD:I hope you can excuse my English

Anybody?

My guess is your power supply for your over-clocked machine--can you swap it for a second and monitor to see if it continues to be difficult?

I tried with a Power Supply ANTEC HCP 1200W and after 3 hours de hash rate downgrade to 385 GH/s from 510 GH/s Sad

I dont understand why....
I think its not power supply. Maybe the temperature? Its operating at 47-43 ºC.... I think is not an excessive temperature...

this is like the intel cpus the i5 2500k if you got a good one over clock was easy if you got a bad one oh well.

I own 4 s-3's the batch 4 run great 2 close to 900gh

the batch 1 run meh. 2 run close to 850gh

Agreed. Some machines will take the OC and others preform badly and preferred to be under-clocked. You may be best of keeping that machine at 418.75mhz or trying to find another frequency that it likes.

Also you could try rebooting from the GUI or try a repeat reboot as mentioned a few pages back. I have notice that my machine's hash rates have dropped periodically and a GUI reboot fixes it.

My current issue is that one of my machines, has a blade that's 4 degrees cooler than the other.

Anyone have any ideas what would cause it?