edit: if the price (which I was unable to find) is low enough then it could potentially be a good deal, however it would still need to compete with the secondary market of other miners with similar efficiency
https://ehash.com/product/avalon4-module-1t/It looks like they are charging 2.15
BTC plus .29
BTC each shipping when buying 10, for a total of 2.44
BTC which works out to roughly $536 each when buying 10. When compared to both the SP20 and the S5 it appears to be more expensive while being less efficient.
I have been doing settings under customs
Chip Frequency(Default: 450:390:370) >>>>>>>>>>>>
420:360:340Chip Voltage(Default for 4.0: 8125, for 4.1: 8000) >>>>>
7400 this gives me : 891 gh watts are not settled give me a few minutes
my efficiency numbers are much improved 557 watts over 922 gh = 0.604 watts per gh vs 0.681 watts per ghto really get highest gh with lowest watts will take time.
922gh at 0.604 watts and 40db-42db has real value for an office setup. please be patience with me as I am not familiar with avalon.
my 420:360:340 = freq 23.44 which runs at 0.7375 volts
![](https://ip.bitcointalk.org/?u=http%3A%2F%2Fimagizer.imageshack.us%2Fv2%2F1024x768q90%2F538%2F4J9a1y.png&t=663&c=kW2uRrhLH98tiA)
This setting is a lot better then the stock setting as it improves efficiency enormously. The hash rate decreases roughly 9% (some of which could be short term variance) while the w/gh declines ~11.4%. If I were running this myself then I would stick to this setting until profitability at these settings were to cease then switch to "eco" settings.
@ Quickseller
please read my thread above you. my style is post and then alter post with more info. you are too fast. I dropped watts per gh from 0.681 to 0.604
so far stock freq and 1 custom freq
450:390:370 = 25.27 and 0.681 watts volts get stable at 0.7775
420:360:340= 23.44 and 0.604 watts volts get stable at 0.7375
410:350:330 = 22.83
LOL sorry
Really glad to see Phil doing another review. Personally I hope every manufacturer sends Phil a unit moving forward. I have pointed countless people to his SP20 thread. I would like to get one of these since they are silent, but the price is just ridiculous.
Also feel free to delete my comment
![Wink](https://bitcointalk.org/Smileys/default/wink.gif)
His reviews tend to have the most relevant information while a lot of other reviews tend to have a lot of "fluff" with unimportant information
no mods needed to be really quiet.
This is probably a huge plus for the avalon 4. From what I hear the SP20 is very loud, and the S5's I had in my apartment were really too loud, I would wake up almost every morning around an hour before I had to because of the loud noise