Bitmain Antminer A3 earning $500 a day mining SIAcoin . .WHAT?! Results & Stats

[rummy]

thats weird cause im overclocked at 625 and my pcb temps are in 50's and 70's for chip also in a garage

[AlvinM]

Anybody knows if underclocking void tne warranty ?

[QuintLeo]

Have spent quite a bit of time with mine, I've gone through the whole unit software / hardware wise and made quite a few hardware notes that ill curate and share at a later date.

Voltage control is whack on these, needs custom firmware. Over the past few days of testing i was getting the following.

600mhz, 80C, 10K+ HW errors
581mhz, 55C, 5 HW errors
575mhz, 70C, 7K+ HW errors

How reducing clock speed results in more heat + HW errors is beyond me unless there are serious voltage calculation issues with these things. Also the CPU on the control board is running near full tilt just to keep up with the UART activity on the hashing boards. So even the simple act of refreshing the web page can give you HW errors. These aren't real errors, but just the control board lagging behind.

Also these are identical to the D3 in almost every way. pic firmware, eeprom images, etc... are all identical. The only thing that sets this apart from a D3 is the ASIC's, but considering it has all the same issues that the D3 had it makes me wonder if bitmain has come up with a more universal ASIC chip that can be reconfigured. There are JTAG headers on the hash boards, so who knows?

 No, they just use fairly universal controllers and control software, with minimal changes to suit the different algorithm.
 I suspect their software for the D3 L3 and A3 all derived from some generation of their S9 software, and goes back at least as far as the S5 in the chain or direct ancestery.

 Their hardware configuration seems to have been set by the S5+/S7 for all their recent miners, VERY minimal changes.

 I don't see any reason why UNDERclocking would void the warranty.

[SIN3R6Y]

Have spent quite a bit of time with mine, I've gone through the whole unit software / hardware wise and made quite a few hardware notes that ill curate and share at a later date.

Voltage control is whack on these, needs custom firmware. Over the past few days of testing i was getting the following.

600mhz, 80C, 10K+ HW errors
581mhz, 55C, 5 HW errors
575mhz, 70C, 7K+ HW errors

How reducing clock speed results in more heat + HW errors is beyond me unless there are serious voltage calculation issues with these things. Also the CPU on the control board is running near full tilt just to keep up with the UART activity on the hashing boards. So even the simple act of refreshing the web page can give you HW errors. These aren't real errors, but just the control board lagging behind.

Also these are identical to the D3 in almost every way. pic firmware, eeprom images, etc... are all identical. The only thing that sets this apart from a D3 is the ASIC's, but considering it has all the same issues that the D3 had it makes me wonder if bitmain has come up with a more universal ASIC chip that can be reconfigured. There are JTAG headers on the hash boards, so who knows?

 No, they just use fairly universal controllers and control software, with minimal changes to suit the different algorithm.
 I suspect their software for the D3 L3 and A3 all derived from some generation of their S9 software, and goes back at least as far as the S5 in the chain or direct ancestery.

 Their hardware configuration seems to have been set by the S5+/S7 for all their recent miners, VERY minimal changes.

 I don't see any reason why UNDERclocking would void the warranty.

Usually the eeprom's are different, L3/S9/D3 all have different eeprom content. Except the A3 and D3 share the same eeprom content. These eeproms are on the i2c bus and each hash board has one. No clue what the data is actually used for, but considering every miner has been different to this point except the D3/A3 suggest's they are more similar than bitmain would like us to believe.

Also, i traced out that header on the A3 board which all seems to connect to the PIC16F1704 chip.

1 = 14 = VSS
2 = 12 = RA1/ISCPCLK
3 = 13 = RA0/ISCPDAT
4 = 14 = VSS
5 = 1 = VDD
6 = 4 = Vpp/MCLRT/RA3

That basically makes it an ICSP header, which might be able to gather some useful information on the programming. Clearly it isn't locked as cgminer is able to flash this chip on startup if needed. Based on the code it looks like the PIC has a small boot loader program which initializes things, then waits to hear from the controller. Whether the controller actually has an ICSP connection to the PIC itself, or if the small loader program has the ability to read data over i2c for programming i don't know.

/bin/pic.txt has the pic microcode in it, but it may not contain that initial loader program.

[ThugB33]

Gents,

you should two put your wisdom together on this with @blissz and comple a custom FW if that's only possible and output it with a dev fee ... we all will benefit especially if we could hit other "Blake" algos or X11's

[The Demon Slick]

I can extrapolate the yield drop from my 2 580s rig.
before hard fork at block 139,000  1 sia per hour
right after  .5 sia per hour
now .2 sia per hour

Yield has dropped by 80% since the fork.

Now at .07 sia coin per hour, down 93% since 1/27. 2 or 3 days.
That's a lot of drop.

[VoskCoin]

Great review, thanks man

absolutely man thanks for checking it out

[adaseb]

I can extrapolate the yield drop from my 2 580s rig.
before hard fork at block 139,000  1 sia per hour
right after  .5 sia per hour
now .2 sia per hour

Yield has dropped by 80% since the fork.

Now at .07 sia coin per hour, down 93% since 1/27. 2 or 3 days.
That's a lot of drop.

You shouldn't be dual-mining this coin anymore.

Try either DCR or PASC. Just go to what-to-mine and see which is more profitable.

[VoskCoin]

I can extrapolate the yield drop from my 2 580s rig.
before hard fork at block 139,000  1 sia per hour
right after  .5 sia per hour
now .2 sia per hour

Yield has dropped by 80% since the fork.

Now at .07 sia coin per hour, down 93% since 1/27. 2 or 3 days.
That's a lot of drop.

You shouldn't be dual-mining this coin anymore.

Try either DCR or PASC. Just go to what-to-mine and see which is more profitable.

baikal giant b mines both of those now too though, O_O asic invasion I warned people about this lol

[ThugB33]

40$/day already tomorrow 30.... will it stabilize on 20 or on 10??? If so then shitmain made a good move ... sold the hardware with minimal profit gain...

[bittawm]

40$/day already tomorrow 30.... will it stabilize on 20 or on 10??? If so then shitmain made a good move ... sold the hardware with minimal profit gain...

I still dont have my A3s yet   

[leowonderful]

Considering the fact that Bitmain's apparently giving coupons to Obelisk buyers that could be used to purchase the A3, seems like the profitability on the A3s is going to continue to drop. It'll be the next D3 or worse.

[QuintLeo]

40$/day already tomorrow 30.... will it stabilize on 20 or on 10??? If so then shitmain made a good move ... sold the hardware with minimal profit gain...

 And Bitmain just announced a second batch for sale via Emails.

 Kiss them crazy-high first adopter profits bye-bye....

[VoskCoin]

40$/day already tomorrow 30.... will it stabilize on 20 or on 10??? If so then shitmain made a good move ... sold the hardware with minimal profit gain...

 And Bitmain just announced a second batch for sale via Emails.

 Kiss them crazy-high first adopter profits bye-bye....

i kissed them goodbye day 1 im not naive T_T it has held strong 40+ sc each hour all day though a bit of hope remains lol

[VoskCoin]

40$/day already tomorrow 30.... will it stabilize on 20 or on 10??? If so then shitmain made a good move ... sold the hardware with minimal profit gain...

I still dont have my A3s yet   

why such a delay thats awful O_O

[MiningDoc]

40$/day already tomorrow 30.... will it stabilize on 20 or on 10??? If so then shitmain made a good move ... sold the hardware with minimal profit gain...

 And Bitmain just announced a second batch for sale via Emails.

 Kiss them crazy-high first adopter profits bye-bye....

I think they said the second batch wouldn't be shipping until march 15th in the email I got.

[dlezama]

40$/day already tomorrow 30.... will it stabilize on 20 or on 10??? If so then shitmain made a good move ... sold the hardware with minimal profit gain...

 And Bitmain just announced a second batch for sale via Emails.

 Kiss them crazy-high first adopter profits bye-bye....

I think they said the second batch wouldn't be shipping until march 15th in the email I got.

Correct, but sometimes they ship early, sometimes late. Current batch is not all up yet. And we don't know if they won't test them a little before shipping So there are quite a few uncertainties.

[MiningDoc]

Don't they always "test" them   My guess is they have some hashing away at this moment....

[bet101]

Antminer A3 is on the way to become another useless D3, 1 week ago the A3 would make you a whopping 19K USD a month, today it is at 1K.
The more A3's they create the more your earnings go with it, but antminer will always make a profit in the process.

I bought mine at 2230 USD, now they selling at 980USD!!!! 

[hannezorf]

Antminer A3 is on the way to become another useless D3, 1 week ago the A3 would make you a whopping 19K USD a month, today it is at 1K.
The more A3's they create the more your earnings go with it, but antminer will always make a profit in the process.

Yeah, that's what everybody predicted and that's what has to come when the difficulty is such low and so much hashpower is suddenly available in the network.

Sad for those who ordered and still did not get their miners. Me in Germany I guess if I ordered one it would have reached the customs now and in 2 weeks I would get a letter about the fact that there is something I need to pick up from the customs. Even If i paid the customs before there would be heavy delays.