Review of Avalon-4.1

[dogie]

Okay real fast on eco mode it gets .488 watts a gh very good but so far eco mode locks me into 244 watts and 500gh

they should send a sd card preflashed for your rasp-pi what a p.i.t.a. to flash an sd with a mac.  gave up purchased a reader/writer for my windows 7 and flashed an sd card in under 30 minutes.  works nice with a rasp pi. setup is very easy with a rasp pi and a good sd card.

back to efficiency this is a great office miner.  it is basically silent under 40db which is no noise at all.  so if you are a free power guy but must be quiet this seems better then the s-5 or sp20.

I am running 2 s-3's in my friends office at 2.4 cents a kwatt this is a good replacement for them.

more to quick seller   the s-5 is a tweakers delight .  there are 10 or more fan setups I did mounting setups and when sidehack comes out with a voltage controller (95% or so) the s-5 will be even more tweakable then now.

This is a set it and forget (at least I hope it is) .  Once I fuck with the custom setting and figure out the best numbers to use it will sit and mine quietly for a long time. It has a place for some of us.

It is not for a 10 miner in the garage setup.  Or any bigger farm. 100 in a barn 50 in a warehouse space.

 But the guy that really needs peace and quiet this is the one. I will figure the best you can do in the next few days on the eco or custom end. Efficiency wise.

Is this quieter then the S3s?

Absolutely, the incredibly low fan profile even overcools so you can cap fan speeds even lower.

[philipma1957]

   yeah with the custom settings of



Chip Frequency(Default: 450:390:370)                      360:355:340
Chip Voltage(Default for 4.0: 8125, for 4.1: 8000)          7250
Automatic Voltage(Default: True)                                      True

the results below fan is 1100 rpm quiet but if you ssh in and set it slower the unit is still cool enough.

I get 840gh use 460 watts  about 0.55 watts a gh and  38-45db with stock fan.  I am done with custom setting tests for efficiency 0.55 watts and 840gh is good enough for me.  Tomorrow I tweak fan settings.

[dogie]

the results below fan is 1100 rpm quiet but if you ssh in and set it slower the unit is still cool enough.

Alternatively you can just set the max fan RPM to 30 [or around there for 1200rpm] if you know ambient is going to remain sensible. Ie don't cap the RPm off then put it in a 50C farm

Either way, 1100rpm is quieter than a Cube. I've missed this.

[philipma1957]

the results below fan is 1100 rpm quiet but if you ssh in and set it slower the unit is still cool enough.

Alternatively you can just set the max fan RPM to 30 [or around there for 1200rpm] if you know ambient is going to remain sensible. Ie don't cap the RPm off then put it in a 50C farm

Either way, 1100rpm is quieter than a Cube. I've missed this.

I am running my s-5 and the avalon-4.1 In a spare bedroom.  The window is open ½ to ¾ inches.



This gear would really clean up if it could be sold at a lower price point. It is truly quiet the  fan at 15% is under 1000 rpm

The settings I have finished with:


Mining Mode(Default: Customs)---------------------------------------------------------   Customs

Chip Frequency(Default: 450:390:370)------------------------------------------------   360:355:340

Chip Voltage(Default for 4.0: 8125, for 4.1: 8000)-----------------------------------  7250

Automatic Voltage(Default: True)-------------------------------------------------------  True

Fan%(Default: 20%)----------------------------------------------------------------------  15

 gave me  this over night    watts are 460-470 at kwatt meter that is  about 0.56 watts

sound meter was 38db to 42 db
 
This miner actually is a true home miner the sound levels are wife friendly so when all is said and done I can keep these custom settings for now and then keep this miner on stock eco mode for the summer.  Use it to mine solo to keep in the game.

that is 500 gh and 244 watts = .488 watts a gh

[cloh76]

Are these setting accurate:

wall power reference(W)     hashrate(GHS)         comment
400                                  800                       echo mode
570                                  1000                       normal mode
950                                  1300                       turbo mode

Assuming they are.  I can run 2 Avalon 4.1s using my Corsair ax1200i power supply at normal mode.   Is that right?

On Normal mode what is the dB at default settings?

Also for reference, what is the dB on turbo mode?

I will be putting these in my office so i want to make sure they are quiet

[macgyver007]

Are these setting accurate:

wall power reference(W)     hashrate(GHS)         comment
400                                  800                       echo mode
570                                  1000                       normal mode
950                                  1300                       turbo mode

Assuming they are.  I can run 2 Avalon 4.1s using my Corsair ax1200i power supply at normal mode.   Is that right?

On Normal mode what is the dB at default settings?

Also for reference, what is the dB on turbo mode?

I will be putting these in my office so i want to make sure they are quiet

There are no settings to achieve those numbers in the real world with the factory firmware which is:

250W 500GHs eco mode
~650W 1000GHS normal mode
there are some in between frequency and voltage settings for 450W and 500W (not defaults) which give 850-900GHS more info on that in this thread and my review thread
450W 850GHS
500W 900GHS
I have not gotten around to turbo yet will tackle that tomorrow
As for quiet, using either of phils or my settings for 850-900 range you will have guaranteed quiet and even on stock speed its quiet just not as efficient

[philipma1957]

Are these setting accurate:

wall power reference(W)     hashrate(GHS)         comment
400                                  800                       echo mode
570                                  1000                       normal mode
950                                  1300                       turbo mode

Assuming they are.  I can run 2 Avalon 4.1s using my Corsair ax1200i power supply at normal mode.   Is that right?

On Normal mode what is the dB at default settings?

Also for reference, what is the dB on turbo mode?

I will be putting these in my office so i want to make sure they are quiet

db should be under 45db.  you will be borderline to do the corsair AX1200i   using custom settings,  the stock settings you have are not accurate.

Now I have the older firmware as I go with if it works  with old firmware don't ever do new firmware until 3 or 4 others show it works.

The firmware I have does eco mode :

  244 watts    and   500 gh

My custom setting does  840gh at 470 watts  

 so you can do 2 at 1680gh   using 940 watts

settings page


picked custom



my results have been very stable using a rasp pi  older model B

[rigrenter]

Can anybody post what are the settings for "Chip Frequency" and "Chip Voltage" when running in ECO mode?

Furthermore, can "Chip Frequency" be modified at any interval? Is "Chip Frequency" directly related to "Chip Voltage", is there any table for all possible combinations of  "Chip Frequency" and "Chip Voltage" (combined)?

[philipma1957]

Can anybody post what are the settings for "Chip Frequency" and "Chip Voltage" when running in ECO mode?

Furthermore, can "Chip Frequency" be modified at any interval? Is "Chip Frequency" directly related to "Chip Voltage", is there any table for all possible combinations of  "Chip Frequency" and "Chip Voltage" (combined)?

chip frequency is directly related to


chip frequency setting on the custom page
I use 370:360:340
Default is 450:390:370

use custom
Set your volts to 7750
use auto voltage =true.

and then tinker with chip frequency setting  you will get lots of results for frequency. auto volts will find the best volts for that freq.





volts can be set at:
 8250
 8125
 8000
 7875
 7750
 7625
 7500
 7375
 7250
 7125
 7000
 6875
 6750
 6625
 6500


I do all custom settings.  I don't ssh.  

I found with volts on auto the software does the work. my current custom setting is :



I get this result and use  480 watts to do it.  this is 480/854 = .562 watts a gh

 if I go to custom I get 244 watts and 500gh that is .488 watts a gh .  diff and price does not require me to do eco right now.

[philipma1957]

CrazyGuy may do a group buy on these.



https://bitcointalk.org/index.php?topic=612390.msg10585048#msg10585048

[philipma1957]

I decided to order today.  So I purchased a second avalon 4.1


 valkir   helped me get the demo one and was helpful in ordering a second one today.

I will post how 2 run on my rasp pi.  I hope to  get it some time next week and do a series of photos and tests with 2 running vs 1.


I may order a third one and do a 3 machine set of tests.

 I have to say once again this is really quiet gear.

 I may end up selling off my sp20s and my s-5 and just keeping 3 or 4 of these for the summer.

[kenshirothefist]

I have to say once again this is really quiet gear.

Yes, and while there is winter it makes a great leg heater

https://bitcointalk.org/index.php?topic=7216.msg10594502#msg10594502

[dogie]

I have to say once again this is really quiet gear.

Yes, and while there is winter it makes a great leg heater

https://bitcointalk.org/index.php?topic=7216.msg10594502#msg10594502

Mine already is, max clocks and still silent (with a fan RPM cap). Quieter than any PSU I can put it with other than an RM1000.

[philipma1957]

I have to say once again this is really quiet gear.

Yes, and while there is winter it makes a great leg heater

https://bitcointalk.org/index.php?topic=7216.msg10594502#msg10594502

Mine already is, max clocks and still silent (with a fan RPM cap). Quieter than any PSU I can put it with other than an RM1000.

I am going to shift to these over the next month.   run them at 850gh using 480 watts each. and when the summer comes set them to eco mode at 500gh 244watts each.

I will try to see if they are stable with 2 then 3 then 4 units on the rasp pi.

[valkir]

Im also looking to do the same! 

Currently looking to buy one more Avalon 

I got coupons if you need more.

Cheer

Valkir

[Trends]

Im also looking to do the same! 

Currently looking to buy one more Avalon 

I got coupons if you need more.

Cheer

Valkir

Valkir

what is the deal with the coupons?

Trends

[valkir]

It was 3% and now should be 5%

Im waiting for the new coupons. 

PM me for one! Its free!

[philipma1957]

I went to order more today had trouble doing so about 1 hour later

 valkir  I got your pm explaining the issue.





I got an email from ehash saying 1st order was paid for. I am hoping this is a good order. as I do want to show a 2x machine setup.

[philipma1957]

I got tracking for the new miner.  I will look to do a long followup on this as a 2 miner setup very soon.

[judypug1956]

any news on this new review?