Are you running both boards from that AX1200 PSU ?
If yes there might be your problem.
I'm using 2 PSUs 850W + 750W and power draw from the wall is around 1450W at 775MHZ.
no no, Antec1300w and AX1200i pulling a total of 1440w at the wall.
and this is the cgminer stats at the time of posting.
0: HFB JOLOKIA : 825MHz 87C 100% 0.84V | 534.3G / 621.0Gh/s WU:8676.0/m A:428159 R: 0 HW:119
1: HFB FRUTESCE: 762MHz 77C 100% 0.84V | 539.6G / 586.9Gh/s WU:8199.9/m A:418570 R:532 HW: 49
sadly if I push either board any more it's noticeably unstable. 620ghs and 580ghs is what i can get from my boards. without the ability to adjust the individual dies' clock rate, i can't squeeze the last bits of hash out of them. I don't know if anyone's going to put the effort in to read the code and suggest what needs to be fixed so we can fully utilize the HF-Tool.
oh and this is what happens when i say unstable:
[2014-06-17 21:25:45] Accepted 380808fb Diff 1.17K/532 HFB 0 pool 0
[2014-06-17 21:25:51] Accepted 65e2e50e Diff 643/532 HFB 1 pool 0
[2014-06-17 21:25:52] HFB JOLOKIA: No valid hashes for over 5 seconds, shutting down thread
[2014-06-17 21:25:59] HFB 0 failure, disabling!
[2014-06-17 21:26:05] HFA 0 HFName usb write err:(-7) LIBUSB_ERROR_TIMEOUT
[2014-06-17 21:26:05] HFA 0 attempted reset got err:(0) LIBUSB_SUCCESS
[2014-06-17 21:26:05] HFA : hfa_send_frame: USB Send error, ret 0 amount 0 vs. tx_length 8, retrying
[2014-06-17 21:26:05] HFA : hfa_send_frame: recovered OK
[2014-06-17 21:26:05] HFA 0 HFGetHeader usb read err:(-9) LIBUSB_ERROR_PIPE
[2014-06-17 21:26:05] HFA 0 attempted reset got err:(-5) LIBUSB_ERROR_NOT_FOUND
[2014-06-17 21:26:05] FAIL: USB get_lock not found (2:11)
[2014-06-17 21:26:10] Accepted 79a271c1 Diff 539/532 HFB 1 pool 0
[2014-06-17 21:26:11] HFA: Found old instance by op name JOLOKIA at device 0
[2014-06-17 21:26:11] Hotplug: Hashfast added HFA 2
[2014-06-17 21:26:24] Accepted 23b05141 Diff 1.84K/532 HFB 1 pool 0
[2014-06-17 21:26:25] Accepted 32558e25 Diff 1.3K/532 HFB 0 pool 0
I have no solution to the above other than to use a lower clock rate. I have tried to set the Voltage higher with the HF-Tool but even if i set 930, cgminer still only runs with under 0.90V.
if anyone has any hints, I'd much appreciate it.
Cheers,
QG
The voltage reported by cgminer comes from some on-die sensors, so it will always be lower than the setpoint measured by the VRM, which happens off-chip. That's normal.
Do you still have that piece of MDF right behind the boards, and is there any air flowing over the boards themselves? You can see similar things if the VRMs shut down due to high temperatures.