Hey everyone, Just wanted to report back on my 10 miners from gaw,
2/10 did not work out of the box,
1 had clamped the fan wires and shorted everything out when I plugged it in. - Fixed this by repairing the fan wires
1 hashed, but nothing got accepted - fixed this by reflowing the solder with a heat gun... hashing like a champ now.
I modded 4 with the 49.9K resistor, and was running them averaged 1225mhz stable / average 507 khash and found the heat and power consumption excessive - 29ish watts when pods were hot.
I now have modded all to with a 47K resistor and total mhz average after tuning is 1190mhz / 501
47K vs 49.9K Comparison:
Hashrate Ave. Watts MHz (ave after chip tuning) hash /Watt
47K 501.65 20-22 1190 22.8
49.9K 507.6 28-29 1225 17.5
My definitive Thoughts
-Use a 47K resistor - the extra heat / power management is not worth the minimal hashrate increase.
-use sandor111's cpuminer
-No HW errors does not mean your miner is running optimally, some gridseeds will run slowly at clocks that are unstable, but not throw HW errors.
-use autotune for debugging and testing max frequencies of chips, but lock them in manually in your config script.