the stromborn version has this values
case "$_cf" in
256)
CF="50:256"
;;
270)
CF="47:270"
;;
282)
CF="45:282"
;;
300)
CF="40:300"
;;
305)
CF="39:305"
;;
310)
CF="38:310"
;;
315)
CF="38:315"
;;
320)
CF="37:320"
;;
325)
CF="36:325"
;;
330)
CF="36:330"
;;
335)
CF="35:335"
;;
340)
CF="35:340"
;;
345)
CF="34:345"
;;
350)
CF="34:350"
;;
355)
CF="33:355"
;;
360)
CF="33:360"
;;
365)
CF="32:365"
;;
370)
CF="32:370"
;;
375)
CF="32:375"
;;
380)
CF="31:380"
;;
385)
CF="31:385"
;;
390)
CF="30:390"
;;
395)
CF="30:395"
;;
esac
my sweet spot is 355 but I have only 2 modules Avalon V1
I think that the hw rate is dependent on the controller + temp
I had 0,4% increase in hw with 370 but I have already a broken module so 355 is better
Topic: Avalon ASIC users thread - page 164. (Read 438516 times)
Anyone know what the settings would be for an overlock to 345mhz? I was running these with the Strombom firmware and appeared to get lesser hw errors
I haven't included support for 345Ok, so I guess strombom had some custom additional modifications in his firmware? In his firmware the 345mhz seems to be the sweet spot for me.
I am currently getting around a 2.3% HW error rate using the (hw/diff1shares+hw formula). Accepted shares 7555, HW 12034. Does this seem to high?
Thanks
Thanks Noted.
However I have reverted to the strombom modified firmware because the 345mhz seems to yield the lowest amount of hw errors (0.39%) and about the same hash rate as 350mhz. The only caveat are the fans running at full speed that sound like a mini jet, but I would rather have the fans failed than the slight potential of shortening the life of the chips with an increase HW error rate.
Is there any modification that could be made to lower the speed of the fans (via ssh) or is a full recompile the only way?
I would never risk running the avalon higher then 325 on any of the stock PSU's not even the 2nd Batch Avalons.
Assuming ~85% efficiency for the PSU, and drawing 700W at the wall, that's only 595W draw, and the 2nd batch avalons have 750W PSUs. Yes I know not all PSUs are created equal, but that's running them at about 80% power draw.ckolivas what you say is correct and at 208-240 this becomes a non issue.
However under such power loads I find it prudent to improve power quality (e.g. power factor correction, noise suppression, transient impulse protection, etc.) This can play a huge role on the performance of the overall system.
Such a solution can be expensive for an average user.
Therefor as a precautionary measure I use the following to supplement the avalons performance.
For each Avalon I dedicate a
Cyberpower CP1500O 1500VA UPS Battery Backup Pure Sine Wav,
The Web Power Switch VII and,
PSU Corsair AX860i,
Connected in that order.
This helps to narrow down potential issues when it comes to pushing these devices into out of spec operation.
Edit: I will also note that the hardware I listed above is good for 2 Avalon's running at 300 with no problems. However as I wish to push the Avalon into the unknown territory I am limiting that hardware to 1 Avalon.
I modified the crontab to run cgminer-monitor every minute to help mitigate the effect.
say what? how do i do this?
From the shell 'crontab -e' (this runs vi). Replace the */5 or */2 (varies with firmware version) with */1 to check if cgminer is hung up every minute.
Actually the cgminer-monitor script needs to be run twice and see the same number of Diff1 shares in order to perform the restart, so it would restart cgminer after it was hung for somewhere between 1 and 2 minutes, but never after less than 1 minute.
I modified the crontab to run cgminer-monitor every minute to help mitigate the effect.
say what? how do i do this?
From the shell 'crontab -e' (this runs vi). Replace the */5 or */2 (varies with firmware version) with */1 to check if cgminer is hung up every minute.
I modified the crontab to run cgminer-monitor every minute to help mitigate the effect.
say what? how do i do this?
From the shell 'crontab -e' (this runs vi). Replace the */5 or */2 (varies with firmware version) with */1 to check if cgminer is hung up every minute.
I would never risk running the avalon higher then 325 on any of the stock PSU's not even the 2nd Batch Avalons.
Assuming ~85% efficiency for the PSU, and drawing 700W at the wall, that's only 595W draw, and the 2nd batch avalons have 750W PSUs. Yes I know not all PSUs are created equal, but that's running them at about 80% power draw. so they should run 350 ok with stock PSU?
Thats what I do 
lasted around 45mins on 350 then machine got SICK..... the pic says ALIVE but before i refreshed it did say SICK
I would never risk running the avalon higher then 325 on any of the stock PSU's not even the 2nd Batch Avalons.
Anyone know what the settings would be for an overlock to 345mhz? I was running these with the Strombom firmware and appeared to get lesser hw errors
I haven't included support for 345Ok, so I guess strombom had some custom additional modifications in his firmware? In his firmware the 345mhz seems to be the sweet spot for me.
I am currently getting around a 2.3% HW error rate using the (hw/diff1shares+hw formula). Accepted shares 7555, HW 12034. Does this seem to high?
Thanks
Can you explain what is "SICK" means in cgminer? I usually had hardware problem with my GPUs after I get SICK in cgminer, and I always got panic when I see this word and "DEAD"
can anyone recommend replacement fans for batch one?
I bought these, but has not replaced them, they are more than enough powerful
http://www.frozencpu.com/products/9103/fan-814/Delta_120_x_38mm_High_Speed_PWM_Fan_-_19296_CFM_AFC1212DE_Dell_YT525-A00.html?tl=g36c365s935
This should also be good enough
http://www.frozencpu.com/products/12959/fan-859/Delta_120_x_38mm_High-Speed_PWM_Fan_-_15185_CFM_AFB1212SHE.html?tl=g36c365s935
Here is a cheaper place to buy the AFB1212SHE:
http://www.sidewindercomputers.com/deaf12suhisp.html
My 3 units I am getting 0.94% uptime 1.5 hrs, 1.39% 10 hrs, 1.46% 10 hrs. I am running 240V.
Yea, mine starts off with less than 1% but the builds up. I suspect it might be the heat. My temp3 is 48c.
Anyone know what the settings would be for an overlock to 345mhz? I was running these with the Strombom firmware and appeared to get lesser hw errors
I haven't included support for 345Ok, so I guess strombom had some custom additional modifications in his firmware? In his firmware the 345mhz seems to be the sweet spot for me.
I am currently getting around a 2.3% HW error rate using the (hw/diff1shares+hw formula). Accepted shares 7555, HW 12034. Does this seem to high?
Thanks
Anyone know what the settings would be for an overlock to 345mhz? I was running these with the Strombom firmware and appeared to get lesser hw errors
I haven't included support for 345Ok, so I guess strombom had some custom additional modifications in his firmware? In his firmware the 345mhz seems to be the sweet spot for me.
I am currently getting around a 2.3% HW error rate using the (hw/diff1shares+hw formula). Accepted shares 7555, HW 12034. Does this seem to high?
Thanks
I take back what I said about the power usage, there was a problem from the angle I was looking at it, misreading the LCD. Power usage is 698W at speed 350, 240V.
Anyone know what the settings would be for an overlock to 345mhz? I was running these with the Strombom firmware and appeared to get lesser hw errors
I haven't included support for 345
Anyone know what the settings would be for an overlock to 345mhz? I was running these with the Strombom firmware and appeared to get lesser hw errors
I modified the crontab to run cgminer-monitor every minute to help mitigate the effect.
say what? how do i do this?
so they should run 350 ok with stock PSU?
Thats what I do lasted around 45mins on 350 then machine got SICK.....
I have similar kinds of issues.
I modified the crontab to run cgminer-monitor every minute to help mitigate the effect.
i switched back to original firmware, i'd hope it does not die! It's a batch 2 that was delivered this month 
http://www.mycom.nl/hardware/voedingen/10656/corsair-ax760
this will do power for three modules?
http://www.mycom.nl/hardware/voedingen/10656/corsair-ax760
this will do power for three modules?
can anyone recommend replacement fans for batch one?
I bought these, but has not replaced them, they are more than enough powerful
http://www.frozencpu.com/products/9103/fan-814/Delta_120_x_38mm_High_Speed_PWM_Fan_-_19296_CFM_AFC1212DE_Dell_YT525-A00.html?tl=g36c365s935
This should also be good enough
http://www.frozencpu.com/products/12959/fan-859/Delta_120_x_38mm_High-Speed_PWM_Fan_-_15185_CFM_AFB1212SHE.html?tl=g36c365s935
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