Technobit Hex8A1 Coincraft in hand.

[loshia]

Guy’s

I got lucky and received my miner in advance.
What I can tell you it rocks! As you can see it works stable with almost zero HW errors and low reject rate. I am sure I can push it little bit forward. More details + pictures power at the wall later.
The screen shot is from my i386 PC. I will move it to my tplink farm and give you some shots of it with a short details about options.

[thomashrev89]

Guy’s

I got lucky and received my miner in advance.
What I can tell you it rocks! As you can see it works stable with almost zero HW errors and low reject rate. I am sure I can push it little bit forward. More details + pictures power at the wall later.
The screen shot is from my i386 PC. I will move it to my tplink farm and give you some shots of it with a short details about options.

Nice, you got a picture of it?

[loshia]

Sorry, Dude,
I just had the chance to do it :

[marto74]

glad you already run it
You can push it a little bit i think:

free image host

[Zich]

Sorry, Dude,
I just had the chance to do it :

Gratz loshia  
I like the heatsink. Did it come with 4800 rpm SUNON?

[loshia]

Sorry, Dude,
I just had the chance to do it :

Gratz loshia  
I like the heatsink. Did it come with 4800 rpm SUNON?

Yup I did not pay attention to brand but it is about 5000 rpm
Did you happen to order one too?

[Zich]

Sorry, Dude,
I just had the chance to do it :

Gratz loshia  
I like the heatsink. Did it come with 4800 rpm SUNON?

Yup I did not pay attention to brand but it is about 5000 rpm
Did you happen to order one too?

Nice, i love that SUNON 
Yes, but less chip board 

[Bicknellski]

Nice sandwich!

Keep us all updated on it.

[loshia]

Some more speed updates as promised

I got it 250GH stable!!! Some things to note:

cgminer clock is set to 250. To find out actual ASIC clock you have to multiply by 4x250 = 1000. In theory I have 8 chips , 32 cores each 1000 clock which equals to 8*32*1000=256000 or 256 GH. You will ask where are my 6 GH. So bad news I got 5 dead cores/engines which does not bother me much. That are the chips received from the factory and I can not do much about it.
./cgminer-api stats | grep engines
   [Chip1 Engines] => 32
   [Chip2 Engines] => 29
   [Chip3 Engines] => 32
   [Chip4 Engines] => 32
   [Chip5 Engines] => 31
   [Chip6 Engines] => 32
   [Chip7 Engines] => 31
   [Chip8 Engines] => 32
 
So I should be getting in theory 251 GH so basically I am there!!

More good news – the max clock rate should be 275*4 = 1100. I am not feeling like I will push it to the limits but I can tell you that all of you shall be getting around 260 GH. Have in mind cooling is very important. I am lucky because it is winter now and my room temp is around 10C. I know that up to 20-22 C is ok.
More Updates to come tplink and cgminer options

[Bicknellski]

Nice.

Are you going to push the chips harder to get more per chip? Get some oil or immersion cooling?

[loshia]

Nice.

Are you going to push the chips harder to get more per chip? Get some oil or immersion cooling?

No i am not going to. Next step will be 255 to reach 260 GH and i will leave it there. That would be it. About immersion cooling i have good experience with it. It does not worth booth the effort and expenses. Besides i wana make some profit so extreme OC and immersion just does not pay off

[Bicknellski]

Nice.

Are you going to push the chips harder to get more per chip? Get some oil or immersion cooling?

No i am not going to. Next step will be 255 to reach 260 GH and i will leave it there. That would be it. About immersion cooling i have good experience with it. It does not worth booth the effort and expenses. Besides i wana make some profit so extreme OC and immersion just does not pay off

Thanks. Just wondering who might be testing the limits of these chips. Definitely profit possible I bet with this board hashing right now.  Will be following GREAT JOB! And Good Luck!

[rammy2k2]

nice brick ! happy mining 

[loshia]

As promised some cgminer stuff explained here:
https://bitcointalk.org/index.php?topic=376351.msg4973845#msg4973845

[loshia]

Morning fellows,
My board PIC FW and heat sink and fans were upgraded yesterday. What I can tell you it rocks. Here are my results after 14+ hours nonstop mining



Some things to point out:
1.   My stats are not settled yet, because I am mining at 512 diif + filtering out nonces inside ASIC chips  which do not meet it. The board is making 270GH stable and there is some room for overclocking. BUT I do not feel brave enough to do it and I suggest to all of you not to push it too much.  We are hiiting the limits of hardware especially voltage regulators so overdriving them for a long period is not good idea at all. This is my personal opinion.  I do hope that there will be precise measurement of power consumption very soon. I am using single rail psu rated 55A/12V. I think the bottom line is at lest 45A, to be on a safe side
2.   Tplink+cgminer worked rock stable without an issue. My pool reject rate is 0.12% only which is golden! I am not commenting my HW error rate at all Technobit team did their job just perfect
3.   What I can tell you that all of you should be able to get the 260Gh advertised at clock around 260 and voltage around 1000 mv. You have to experiment a little bit to find your sweet spot though.  
More updates to come  

[Gator-hex]

My board PIC FW and heat sink and fans were upgraded yesterday.

New photo of new heatsink/fans please!

45A = 540W is high for 28nm though! 0.5GH/1W is like an AntMiner but that has a huge heatsink to dissipate that heat.

I'm not a fan of the Sunon 4500rpm leaf blowers. Can't wait to get my hands on the Hex8A1 and see if I can make it quiet. I like a challenge!

I guess you can always throw more chips at the GH problem like AntMiner did if you can make them cheap enough.

It's a shame it wasn't a 16x chip board then it would really have rocked.  

[loshia]

My board PIC FW and heat sink and fans were upgraded yesterday.

New photo of new heatsink/fans please!

45A = 540W is high for 28nm though! 0.5GH/1W is like an AntMiner but that has a huge heatsink to dissipate that heat.

I'm not a fan of the Sunon 4500rpm leaf blowers. Can't wait to get my hands on the Hex8A1 and see if I can make it quiet. I like a challenge!

I guess you can always throw more chips at the GH problem like AntMiner did if you can make them cheap enough.

It's a shame it wasn't a 16x chip board then it would really have rocked.  

Gator
I am the kind who like to be insured. So 45a is at least 20% on top
If you want 1w/GH you can always have it undervolting/clocking the board no problem

[Gator-hex]

My board PIC FW and heat sink and fans were upgraded yesterday.

New photo of new heatsink/fans please!

45A = 540W is high for 28nm though! 0.5GH/1W is like an AntMiner but that has a huge heatsink to dissipate that heat.

I'm not a fan of the Sunon 4500rpm leaf blowers. Can't wait to get my hands on the Hex8A1 and see if I can make it quiet. I like a challenge!

I guess you can always throw more chips at the GH problem like AntMiner did if you can make them cheap enough.

It's a shame it wasn't a 16x chip board then it would really have rocked.  

Gator
I am the kind who like to be insured. So 45a is at least 20% on top
If you want 1w/GH you can always have it undervolting/clocking the board no problem

Yeah, if I can get 200GH out of them with quiet fans somewhere around 0.7GH/1W (like the Bitfury) I'll be very happy.  

I'll post in "hands on" with the results when I get mine.

[loshia]

My board PIC FW and heat sink and fans were upgraded yesterday.

New photo of new heatsink/fans please!

45A = 540W is high for 28nm though! 0.5GH/1W is like an AntMiner but that has a huge heatsink to dissipate that heat.

I'm not a fan of the Sunon 4500rpm leaf blowers. Can't wait to get my hands on the Hex8A1 and see if I can make it quiet. I like a challenge!

I guess you can always throw more chips at the GH problem like AntMiner did if you can make them cheap enough.

It's a shame it wasn't a 16x chip board then it would really have rocked.  

Gator
I am the kind who like to be insured. So 45a is at least 20% on top
If you want 1w/GH you can always have it undervolting/clocking the board no problem

Yeah, if I can get 200GH out of them with quiet fans somewhere around 0.7GH/1W (like the Bitfury) I'll be very happy.  

I'll post in "hands on" with the results when I get mine.

A friendly advise start looking for two quiet fans for every board you have ordered.

[aopa38]

Morning fellows,
My board PIC FW and heat sink and fans were upgraded yesterday. What I can tell you it rocks. Here are my results after 14+ hours nonstop mining



Some things to point out:
1.   My stats are not settled yet, because I am mining at 512 diif + filtering out nonces inside ASIC chips  which do not meet it. The board is making 270GH stable and there is some room for overclocking. BUT I do not feel brave enough to do it and I suggest to all of you not to push it too much.  We are hiiting the limits of hardware especially voltage regulators so overdriving them for a long period is not good idea at all. This is my personal opinion.  I do hope that there will be precise measurement of power consumption very soon. I am using single rail psu rated 55A/12V. I think the bottom line is at lest 45A, to be on a safe side
2.   Tplink+cgminer worked rock stable without an issue. My pool reject rate is 0.12% only which is golden! I am not commenting my HW error rate at all Technobit team did their job just perfect
3.   What I can tell you that all of you should be able to get the 260Gh advertised at clock around 260 and voltage around 1000 mv. You have to experiment a little bit to find your sweet spot though.  
More updates to come  

loshia what are the temps being reported back?