[ANN] Technobit HEX8A1 -240 GHs Coincraft A1 board- Finished production

[loshia]

Nice pictures guy's
Congrats to all
Spacial thanks to Zih for bringing light to power consumption!

Have fun and happy nonstop mining

[marto74]

Sorry about that Gator.
Specially for customers like you we are finishing now 4 chip version with normal heat sink and fans.
I hope it will be stable @ 130 range  with nice 2-3w fans.
The damn chip is sooo power hungry

Update in Monday

OMG guys the fans are worse than I thought! MARTO!  

BOTTOM FANS = Sunon PF92251V1-000U-G99/S99 = 92mm 12V 4.7W 4500RPM 46dBA 75CFM

TOP FAN = Sunon PMD1209PMB1-A(2).GN = 92mm 12V 12.5W 4900RPM 57.6dBA 120.2CFM

The thing is HUGE! Here it is next to a Hex16B!



I don't have time to mess with it today because it's valentines day and a couple of family birthdays too!

All the parts I need have arrived except the PSUs I had on back order.

I'll have to go hunting for a PSU tomorrow, can anyone confirm 850mV it runs < 264W?
I might just pick up a cheap 550W 44A to tide me over. It's using 17.2W just for fans!

On a serious note guys these fans are dangerous to little fingers. Keeps kids away/get fan guards. They only cost a few dollars.

[stiffla]

OMG guys the fans are worse than I thought! MARTO!  

BOTTOM FANS = Sunon PF92251V1-000U-G99/S99 = 92mm 12V 4.7W 4500RPM 46dBA 75CFM

TOP FAN = Sunon PMD1209PMB1-A(2).GN = 92mm 12V 12.5W 4900RPM 57.6dBA 120.2CFM

The thing is HUGE! Here it is next to a Hex16B!

I don't have time to mess with it today because it's valentines day and a couple of family birthdays too!

All the parts I need have arrived except the PSUs I had on back order.

I'll have to go hunting for a PSU tomorrow, can anyone confirm 850mV it runs < 264W?
I might just pick up a cheap 550W 44A to tide me over. It's using 17.2W just for fans!

On a serious note guys these fans are dangerous to little fingers. Keeps kids away/get fan guards. They only cost a few dollars.

I am currently running one board with a PSU where I use 2 rails 22A each, stable for 20 hours now with 980mV.

[Zich]

I'll have to go hunting for a PSU tomorrow, can anyone confirm 850mV it runs < 264W?

I was trying with frequency 200 & voltage 850 mV but the board not hashing just like stifla first screen shot 
Then frequency 240 & voltage 850 mV , hardware error 23% 

[Zich]

Nice pictures guy's
Congrats to all
Spacial thanks to Zih for bringing light to power consumption!

Have fun and happy nonstop mining

Thanks loshia 
Tomorrow i will move to 260 & i will post the power usage 

[Zich]

Sorry about that Gator.
Specially for customers like you we are finishing now 4 chip version with normal heat sink and fans.
I hope it will be stable @ 130 range  with nice 2-3w fans.
The damn chip is sooo power hungry

Update in Monday

This is great 
I am sure many people will choose 4 chip version 

[foobar31]

This time i am very satisfied with speedy  
The parcel already cleared from custom. I just call DHL office & they said they will deliver the parcel tomorrow  

Congrats Zich:)

Thanks loshia  
Going to prepare new PSU tonight  

Hi Zich,

Can I ask which PSU/model you're using ?

Thanks

Of course, i am using OCZ ZT 750
[...]

Sorry for late reply, my board just arrived. So a bit busy here  

Thanks

[Gator-hex]

Sorry about that Gator.
Specially for customers like you we are finishing now 4 chip version with normal heat sink and fans.
I hope it will be stable @ 130 range  with nice 2-3w fans.
The damn chip is sooo power hungry

Update in Monday

This is great  
I am sure many people will choose 4 chip version  

Are these A1's chips a different production run to the ones Bitmine are using? How did they manage to get 1GH/1W?
What about the Bitfury 2, is the ETA for that still March? I'm probably just going to wait for another chip.
If I cannot get these running quite I'll eBay them.
If someone can give me the lowest GH/Watt they will run at it would be useful before I pick up a temporary PSU.
But if not I'll find out tomorrow and report back!

[Biffa]

Sorry about that Gator.
Specially for customers like you we are finishing now 4 chip version with normal heat sink and fans.
I hope it will be stable @ 130 range  with nice 2-3w fans.
The damn chip is sooo power hungry

Update in Monday

This is great  
I am sure many people will choose 4 chip version  

Are these A1's chips a different production run to the ones Bitmine are using? How did they manage to get 1GH/1W?
What about the Bitfury 2, is the ETA for that still March? I'm probably just going to wait for another chip.
If I cannot get these running quite I'll eBay them.
If someone can give me the lowest GH/Watt they will run at it would be useful before I pick up a temporary PSU.
But if not I'll find out tomorrow and report back!

They use more chips at slower speed to save power.

[dspbuy]

Is that it Marto? You're just going to keep ignoring me?

How much more clear do I need to make this?

• YOU DID NOT SHIP MY ITEM
• YOU HAVE MY MONEY

Do you realize that this is theft? Do we really need to escalate this? What do I need to do to get my money back? Go to the police?

[Gator-hex]

Sorry about that Gator.
Specially for customers like you we are finishing now 4 chip version with normal heat sink and fans.
I hope it will be stable @ 130 range  with nice 2-3w fans.
The damn chip is sooo power hungry

Update in Monday

This is great  
I am sure many people will choose 4 chip version  

Are these A1's chips a different production run to the ones Bitmine are using? How did they manage to get 1GH/1W?
What about the Bitfury 2, is the ETA for that still March? I'm probably just going to wait for another chip.
If I cannot get these running quite I'll eBay them.
If someone can give me the lowest GH/Watt they will run at it would be useful before I pick up a temporary PSU.
But if not I'll find out tomorrow and report back!

They use more chips at slower speed to save power.

Yeah I thought they used 12 instead of 8, but someone corrected me on that, the 12 is for the Rig, the desk has 8, like the Hex8A1.
The chip specs say 850mV for 1GH/W, which was supposed to be their Turbo mode, so I'm surprised these don't even fire up at 850mV.
I did hear a rumor they made a second batch and the first went to DIY, but I was hoping it wasn't true.

[Biffa]

Sorry about that Gator.
Specially for customers like you we are finishing now 4 chip version with normal heat sink and fans.
I hope it will be stable @ 130 range  with nice 2-3w fans.
The damn chip is sooo power hungry

Update in Monday

This is great  
I am sure many people will choose 4 chip version  

Are these A1's chips a different production run to the ones Bitmine are using? How did they manage to get 1GH/1W?
What about the Bitfury 2, is the ETA for that still March? I'm probably just going to wait for another chip.
If I cannot get these running quite I'll eBay them.
If someone can give me the lowest GH/Watt they will run at it would be useful before I pick up a temporary PSU.
But if not I'll find out tomorrow and report back!

They use more chips at slower speed to save power.

Yeah I thought they used 12 instead of 8, but someone corrected me on that, the 12 is for the Rig, the desk has 8, like the Hex8A1.
The chip specs say 850mV for 1GH/W, which was supposed to be their Turbo mode, so I'm surprised these don't even fire up at 850mV.
I did hear a rumor they made a second batch and the first went to DIY, but I was hoping it wasn't true.

No I mean in total, don't they have 5 boards in the Desk? So for 1TH they are getting 200GH per board which is much lower than the 270 these ones get so maybe needs less volts.

[loshia]

Sorry about that Gator.
Specially for customers like you we are finishing now 4 chip version with normal heat sink and fans.
I hope it will be stable @ 130 range  with nice 2-3w fans.
The damn chip is sooo power hungry

Update in Monday

This is great  
I am sure many people will choose 4 chip version  

Are these A1's chips a different production run to the ones Bitmine are using? How did they manage to get 1GH/1W?
What about the Bitfury 2, is the ETA for that still March? I'm probably just going to wait for another chip.
If I cannot get these running quite I'll eBay them.
If someone can give me the lowest GH/Watt they will run at it would be useful before I pick up a temporary PSU.
But if not I'll find out tomorrow and report back!

They use more chips at slower speed to save power.

Yeah I thought they used 12 instead of 8, but someone corrected me on that, the 12 is for the Rig, the desk has 8, like the Hex8A1.
The chip specs say 850mV for 1GH/W, which was supposed to be their Turbo mode, so I'm surprised these don't even fire up at 850mV.
I did hear a rumor they made a second batch and the first went to DIY, but I was hoping it wasn't true.

No I mean in total, don't they have 5 boards in the Desk? So for 1TH they are getting 200GH per board which is much lower than the 270 these ones get so maybe needs less volts.

they have problems with power dude. They can not meet promised/advertised power consumption and 100% of US citizens home fusees are going to explode
Az zich posted chip is not working at lower voltage. I do not know if it is because of the chip or because of the design but i guess it is a chip to blame.
Besides it is getting very expensive when you switch cheap PC PSU with industrial one
Can you imagine to tell your wife
Honey i got new miner.
That is very cool we are gonna be reach
Yes..Probably maybe but please, please stop using washing machine, oven and air conditioner
I can not especially today

[Gator-hex]

Sorry about that Gator.
Specially for customers like you we are finishing now 4 chip version with normal heat sink and fans.
I hope it will be stable @ 130 range  with nice 2-3w fans.
The damn chip is sooo power hungry

Update in Monday

This is great  
I am sure many people will choose 4 chip version  

Are these A1's chips a different production run to the ones Bitmine are using? How did they manage to get 1GH/1W?
What about the Bitfury 2, is the ETA for that still March? I'm probably just going to wait for another chip.
If I cannot get these running quite I'll eBay them.
If someone can give me the lowest GH/Watt they will run at it would be useful before I pick up a temporary PSU.
But if not I'll find out tomorrow and report back!

They use more chips at slower speed to save power.

Yeah I thought they used 12 instead of 8, but someone corrected me on that, the 12 is for the Rig, the desk has 8, like the Hex8A1.
The chip specs say 850mV for 1GH/W, which was supposed to be their Turbo mode, so I'm surprised these don't even fire up at 850mV.
I did hear a rumor they made a second batch and the first went to DIY, but I was hoping it wasn't true.

No I mean in total, don't they have 5 boards in the Desk? So for 1TH they are getting 200GH per board which is much lower than the 270 these ones get so maybe needs less volts.

Yeah I want to run this with less volts like they do 850mV should make it 200GH/200W so I get less heat and can put quieter fans on.
But I think Zich said he got like 23% error rate!  
If I swap with someone with a later batch Feb/Mar will they be more efficient or the same?

[eiabea]

i think i found a way to run this board in my flat AND stay together with my girlfriend

i replaced the stock fans with 3 of this: http://www.blacknoise.com/de/products/it/16/Noiseblocker-NB_BlackSilentFan_92mm

the heatsink doesn't stay as cool as with this default airplane turbines, but i think it will work

i will take some pics later

[Gator-hex]

i think i found a way to run this board in my flat AND stay together with my girlfriend

i replaced the stock fans with 3 of this: http://www.blacknoise.com/de/products/it/16/Noiseblocker-NB_BlackSilentFan_92mm

the heatsink doesn't stay as cool as with this default airplane turbines, but i think it will work

i will take some pics later

Did you try it and know it works? Can you touch the heatsink for 10 seconds without burning fingers?
I'm guessing you will have to drop the clock/voltage a bit. How low did you go and what was the final GH?
The noise blockers are not as good CFM as the one I'm going to try, 3x Arctic F9 (9 blades) 43CFM.
So if yours work I have hope.  

[stiffla]

Did you try it and know it works? Can you touch the heatsink for 10 seconds without burning fingers?
I'm guessing you will have to drop the clock/voltage a bit. How low did you go and what was the final GH?
The noise blockers are not as good CFM as the one I'm going to try, 3x Arctic F9 (9 blades) 43CFM.
So if yours work I have hope.  

I would have gone for the Arctic F9 as well, but he already told me that the blockers are working quiet well  
So i will wait what the outcome is on this

In the meantime, i started my second board with a little noise test  


heres a screen from cgminer

[Gator-hex]

Haha 79dBA  

For those who don't understand how noisy this is...

Garbage disposal, dishwasher, average factory, freight train (at 15 meters)    80dBA    Possible hearing damage
Freeway traffic (at 15 meters), vacuum cleaner    70dBA    Annoying

Specially for customers like you we are finishing now 4 chip version with normal heat sink and fans.
I hope it will be stable @ 130 range  with nice 2-3w fans.
The damn chip is sooo power hungry

If you do a 4 chip think about making standard CPU holes so people can use a CPU heatsink or a radiator block, like KnC and HashFaster do.
If I could use a CPU heatsink with 120/140mm fan it would be so much quieter, or liquid cooling to pump the heat to a radiator and fan outside, would be awesome!

[eiabea]

It's not my best work, but apparently better than the fan selection from technobit...

http://www.bilder-upload.eu/thumb/429874-1392409724.jpg

http://www.bilder-upload.eu/thumb/5a2612-1392409811.jpg

http://www.bilder-upload.eu/thumb/d9e285-1392409832.jpg

http://www.bilder-upload.eu/thumb/2e785f-1392409847.jpg

my cgminer parameters: --hexminer8-set-diff-to-one 1 --hexminer8-chip-mask 255 --hexminer8-voltage 920 --hexminer8-options 8:220

yes i "under"-clocked it, but it runs rock solid with this values

about 60db directly by the bottom fan

[Lucko]

Would bigger aluminium block help? Is it hot at on edges?