Topic: Avalon ASIC users thread - page 166. (Read 438516 times)

+1. Iam going to upgrade 3avalons with a 4th module from my 4th unit..... eill this need more than 850w psu?  what psu Is highly recommended

Thanks!

As you can see, I had it running only 1 minute. It had 180HW errors and ~15 shares. The hashrate was ~76GH... very bad and not healty.



This is for 3 module avalon batch#2 black (stock 750W PSU). Just calculate the Wattage for 3 module to 1 and you know what it will be for 4 module 

Is the measured consumption for 3 or 4 module Avalon? And what should be the recommended PSU wattage for 350 Mhz and 4 modules?

ebereon,
Great post about power!

What about hash rate at 375?
I am afraid to test it and as reported there is no big increase performance

Yes you do i have just checked it and it is indeed. i get confused
10X

If anyone is interested in power consumption of the different clocks:

300:


325:


350:


375:


I think this is very acurate 

greets,
ebereon

Blue fan pulls air into unit if I understand correctly

Dude,
Can you tell me batch one unit blue fan is it sucking or blowing cold air like PWMS?
Please take a look at my last post

I have to place my unit right at the mouth of AC vent to make sure temp3 < 50C.
 In SW USA, top floor

How did you change the fan setting from 100% to auto? Thanks

Batch 1 users did you put new thermal paste? or are you running stock? I might want to add new thermal paste and maybe set the fan speed lower if I can get Temps under 45...

hi
is there any way (not to overclock!) to change frequency dynamic so that the fans run at max. 2000 rpm (because of the noise) in dependency of the (outside) temperatur
(summer is coming and cooling is more and more a trouble and with high frequency the noise is getting horrible..)
TIA

THANKS!!!

flashed sucessfully!

hashing stably @ 76Gh/s @ 325mhz @ slush's pool now
data center cooling on stock PSU
fans working great

Guy's,
Just a question it drives me nuts.
While changing PSU of my Avalon batch one i removed blue fan connector and forget where it was. I connected it to the last fan connector on controler Now following happens

When avalon boots Blue fan is blowing inside like the rest fans
When cgminer starts BLUE fan start to suck - changing the rotation

This is driving me nuts

To be on the safe side i hacked cgminer to max out fan speed that is all.

Here is the patch (by the way - con pls add an option like avalon-fan-max or whatever so we can max out fan performance)

Does your blue fan suck hot air out or blow cold inside while you are mining? I did not pay attention to it but it is stupid fun to suck while other two pwm's blow



  temp_new = info->temp_sum / info->temp_history_count;

        if (temp_new < 35) {
-               info->fan_pwm = AVALON_DEFAULT_FAN_MIN_PWM;
+               //info->fan_pwm = AVALON_DEFAULT_FAN_MIN_PWM;
+               info->fan_pwm = AVALON_DEFAULT_FAN_MAX_PWM;
                info->temp_old = temp_new;
        } else if (temp_new > 55) {
                info->fan_pwm = AVALON_DEFAULT_FAN_MAX_PWM;
                info->temp_old = temp_new;
        } else if (abs(temp_new - info->temp_old) >= 2) {
-               info->fan_pwm = AVALON_DEFAULT_FAN_MIN_PWM + (temp_new - 35) * 6.4;
+               info->fan_pwm = AVALON_DEFAULT_FAN_MAX_PWM;
+               //info->fan_pwm = AVALON_DEFAULT_FAN_MIN_PWM + (temp_new - 35) * 6.4;
                info->temp_old = temp_new;
        }

Here is a before and after upgrade to a Corsair AX860i from the original Batch 1 Avalon power supply.

https://bitcointalksearch.org/topic/m.1910169

Side by Side Comparison
Typical Batch 1 Avalon  before  upgrade, and an upgraded Batch 1 Avalon


Before                                             After

Try reapplying and Save the settings  under CGminer configuration and then hard power off/on

I get the same power draw (890watts) at 325 MHz and about a third of the shares are rejected.  I'm guessing that the power supply is a 650watt unit and can't handle the load.  I'm back to running at 300MHz until I get a new power supply.

can butch 1 be updated also?

 the fan with the blue light struggles sometimes on one of my Avalon units, can anyone point me in the direction of where to find a replacement in the EU?

350 - 105092.67mh/s

94194.56

91662.63

thank you very much! Currently running my batch 2 on 325 running around 80gh/s