[Review] Avalon 4.1 Miner- Summer Mining - Notlist3d

[notlist3d]

I don't think a Raspberry Pi USB does well with an unpowered hub. The power that a Raspberry Pi USB port can supply is very limited. While it may have worked with 1 device, and the hub itself, adding devices will just drag down the +5V that the Raspberry Pi tries to supply to the hub. Maybe the Avalon is REALLY low current and it will all work just fine. I just know things get unreliable real quick when the +5V on a Raspberry Pi isn't nice and well regulated at 5.0 (or a smidge higher). I had a variety of reliability problems with a Raspberry Pi setup and a hub, and they all just disappeared when I supplied the hub and the Pi from an ATX +5v line. Fighting power problems is REALLY frustrating in my experience.

That might be a issue if it was a USB stick miner and getting power from it.  But it seems to work fine with a unpowered with one perfect.

Hopefully in a week or two I have the more units and can confirm it works fine with regular non-powered usb hub.  But if needed I have a few from the ASIC Miner stick miner days in my parts I can use.

[RealMalatesta]

They promote these miners with "Avalon4.1 4.2T Suite". Okay, 4.2 Th.... They also write: "Mining speed can reach 1.3THs". So 3*1.3=3.9 Where are the missing 0.3 th/s?

So in the best of all cases, you get 3.9 Th/s for 6 BTC. But still have to buy PSUs. Has anybody ever reached 3.9?

[philipma1957]

They promote these miners with "Avalon4.1 4.2T Suite". Okay, 4.2 Th.... They also write: "Mining speed can reach 1.3THs". So 3*1.3=3.9 Where are the missing 0.3 th/s?

So in the best of all cases, you get 3.9 Th/s for 6 BTC. But still have to buy PSUs. Has anybody ever reached 3.9?

Okay  these miners are all about quiet not hashrate.

I can get as high as 1.2th but like spondoolies  sp20's higher clocks burn more power per gh.

So if you have free power and want to overclock them tell me I will do a 2 unit 6 hour overclock test for you.

I am at 1637  and 880 watts for 2 units as sound is my absolute most important issue.  next is power I am at 0.5375 watts a gh

here I am on a freq 20.94 2 unit under clock

[RealMalatesta]

They promote these miners with "Avalon4.1 4.2T Suite". Okay, 4.2 Th.... They also write: "Mining speed can reach 1.3THs". So 3*1.3=3.9 Where are the missing 0.3 th/s?

So in the best of all cases, you get 3.9 Th/s for 6 BTC. But still have to buy PSUs. Has anybody ever reached 3.9?

Okay  these miners are all about quiet not hashrate.

I can get as high as 1.2th but like spondoolies  sp20's higher clocks burn more power per gh.

So if you have free power and want to overclock them tell me I will do a 2 unit 6 hour overclock test for you.

I am at 1637  and 880 watts for 2 units as sound is my absolute most important issue.  next is power I am at 0.5375 watts a gh

here I am on a freq 20.94 2 unit under clock

If the noise is the issue, they should promote this - but they do promote the hashrate. It's as if I sell you a house with five rooms, but you see it has only four, and the seller tells you with some bricks and skills, you can build a fifth room - maybe. But never mind, the main issue is that the house has four doors.

[philipma1957]

They promote these miners with "Avalon4.1 4.2T Suite". Okay, 4.2 Th.... They also write: "Mining speed can reach 1.3THs". So 3*1.3=3.9 Where are the missing 0.3 th/s?

So in the best of all cases, you get 3.9 Th/s for 6 BTC. But still have to buy PSUs. Has anybody ever reached 3.9?

Okay  these miners are all about quiet not hashrate.

I can get as high as 1.2th but like spondoolies  sp20's higher clocks burn more power per gh.

So if you have free power and want to overclock them tell me I will do a 2 unit 6 hour overclock test for you.

I am at 1637  and 880 watts for 2 units as sound is my absolute most important issue.  next is power I am at 0.5375 watts a gh

here I am on a freq 20.94 2 unit under clock

If the noise is the issue, they should promote this - but they do promote the hashrate. It's as if I sell you a house with five rooms, but you see it has only four, and the seller tells you with some bricks and skills, you can build a fifth room - maybe. But never mind, the main issue is that the house has four doors.

Okay I tell you what I will set it higher and see what we can mine.

I bumped freq from 20.94 to 26.74  I am running 1 not 2 units.

[RealMalatesta]

They promote these miners with "Avalon4.1 4.2T Suite". Okay, 4.2 Th.... They also write: "Mining speed can reach 1.3THs". So 3*1.3=3.9 Where are the missing 0.3 th/s?

So in the best of all cases, you get 3.9 Th/s for 6 BTC. But still have to buy PSUs. Has anybody ever reached 3.9?

Okay  these miners are all about quiet not hashrate.

I can get as high as 1.2th but like spondoolies  sp20's higher clocks burn more power per gh.

So if you have free power and want to overclock them tell me I will do a 2 unit 6 hour overclock test for you.

I am at 1637  and 880 watts for 2 units as sound is my absolute most important issue.  next is power I am at 0.5375 watts a gh

here I am on a freq 20.94 2 unit under clock

If the noise is the issue, they should promote this - but they do promote the hashrate. It's as if I sell you a house with five rooms, but you see it has only four, and the seller tells you with some bricks and skills, you can build a fifth room - maybe. But never mind, the main issue is that the house has four doors.

Okay I tell you what I will set it higher and see what we can mine.

I bumped freq from 20.94 to 26.74  I am running 1 not 2 units.

But don't burn your house down! I don't want to have trouble with your wife!!!

[philipma1957]

They promote these miners with "Avalon4.1 4.2T Suite". Okay, 4.2 Th.... They also write: "Mining speed can reach 1.3THs". So 3*1.3=3.9 Where are the missing 0.3 th/s?

So in the best of all cases, you get 3.9 Th/s for 6 BTC. But still have to buy PSUs. Has anybody ever reached 3.9?

Okay  these miners are all about quiet not hashrate.

I can get as high as 1.2th but like spondoolies  sp20's higher clocks burn more power per gh.

So if you have free power and want to overclock them tell me I will do a 2 unit 6 hour overclock test for you.

I am at 1637  and 880 watts for 2 units as sound is my absolute most important issue.  next is power I am at 0.5375 watts a gh

here I am on a freq 20.94 2 unit under clock

If the noise is the issue, they should promote this - but they do promote the hashrate. It's as if I sell you a house with five rooms, but you see it has only four, and the seller tells you with some bricks and skills, you can build a fifth room - maybe. But never mind, the main issue is that the house has four doors.

Okay I tell you what I will set it higher and see what we can mine.

I bumped freq from 20.94 to 26.74  I am running 1 not 2 units.

But don't burn your house down! I don't want to have trouble with your wife!!!

 Yeah neither do I!!

2 units now 2 psu's each about 800 watts so 1600 watts total for 2300 gh   or .69 watts per gh.

So just like the sp20  power use jumps faster then the hash rate.

I was 1600 gh and 860 watts = .5375 watts per gh     I am not sure I want to push past the present settings.  note I cranked the volts to 8625.  gear is still pretty quiet

Now   2308 gh and 1600 watts = .69 watts per gh

[notlist3d]

Quick shipping from Ehash.  Now I am up to a set of three.  It is working good it appears by just plugging them in usb hub.

Have some testing to do so I can add more info

[valkir]

Sweet!  I wish I had 3 avalon!

[philipma1957]

Quick shipping from Ehash.  Now I am up to a set of three.  It is working good it appears by just plugging them in usb hub.

Have some testing to do so I can add more info

So you went to the hub and did not daisy-chain?

[notlist3d]

Quick shipping from Ehash.  Now I am up to a set of three.  It is working good it appears by just plugging them in usb hub.

Have some testing to do so I can add more info

So you went to the hub and did not daisy-chain?

Correct I had a cheap hub.  Just used it.   It's a non-powered hub.  So far it seems to work great with the 3 of them.

[notlist3d]

So far the 2 new miners are working great with the first one.  Below is a image of the three running a little underclock.

[philipma1957]

yeah that is a good speed mid 900's  > I am doing a speed test on my 2.

these start pulling a lot of power on the higher clocks.

note the volts are set at 8750  that is 9.375 percent over stock of 8000

I just wired 1 socket for 240 volts about time.  I am using an evga 1600 p2 for 1 unit and an Intel server psu 1200 watts at 240 volts along with 94% efficiency.

It is still not too bad for sound, I think I could squeeze out 2650 or 2700gh for 2 units ,but  the power cost makes it a dumb thing for me.
I know some people want to max gear due to free power.  look at my errors and my temps  these can do more then 1260 each like they are doing here.

[notlist3d]

That is a nice speed on 2 units.  I to can't make it work out with price of electricity.  I was able to get all 3 of mine on a single 110 circuit with underclock.

I'm using gold power supplies, but still very happy to get it all on 1 110 circuit.  I am looking into changing a lot with my summer mining area.  Still working to add airflow, I want to run this summer without using AC on miners.

[philipma1957]

That is a nice speed on 2 units.  I to can't make it work out with price of electricity.  I was able to get all 3 of mine on a single 110 circuit with underclock.

I'm using gold power supplies, but still very happy to get it all on 1 110 circuit.  I am looking into changing a lot with my summer mining area.  Still working to add airflow, I want to run this summer without using AC on miners.

Yeah I am losing money or breaking even, but I will do it for a day to help people get an idea of the top end limits.

[Xircom]

Nice findings.
Looking forward to your results on the 1.2TH area. findings....Could the Avalon be the one that should be standing next to my SP20 `s ?

[notlist3d]

Been testing 3 for a little less then 24 hours.  So far running great as far as stability.  Again I am using a Raspberry Pi to control them, it is working out great.

More to come I have been documenting this from unpacking till now.

[notlist3d]

Three Avalon 4.1's so far happily mining together.  I would consider very stable at this point.  Need to add some lighting I appolgize it's darker then I originally thought.

[philipma1957]

nice are they the silver or black models.

[notlist3d]

nice are they the silver or black models.

All 3 are Silver 4.1 models.  I will get better pictures tomorrow with more lighting.