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

[Gator-hex]

Yeah the heatsink air flows are in a cross + so you cannot use a wind tunnel to cover both heatsinks with a big fan.

Can you measure the length of the heatsink and see if it's 184mm long.

2x 92mm fans on the top was my next idea, depends on length of heatsink though.

yeah heatsink is 183mm long, both fans are 92mm

You should be able to stick 2x 92mm fans on top with a lower/quieter RPM in that case.

[stiffla]

You should be able to stick 2x 92mm fans on top with a lower/quieter RPM in that case.

I will do that for sure, at the moment it is not bearable.
two 92mm ~2000rpm on top, and the bottom one will be replaced too, just got to find the right ones

[Gator-hex]

You should be able to stick 2x 92mm fans on top with a lower/quieter RPM in that case.

I will do that for sure, at the moment it is not bearable.
two 92mm ~2000rpm on top, and the bottom one will be replaced too, just got to find the right ones

Are they both Sunon Maglev PF92251V1-000U-S99 DC 12v 4.7W?

It's 127.43m3/h 75cfm. I hope they didn't put a 110cfm on the top!

I'm hoping the bottom one is slower too! Dunno how I'd replace 75cfm to that heatsink!

[stiffla]

Are they both Sunon Maglev PF92251V1-000U-S99 DC 12v 4.7W?

It's 127.43m3/h 75cfm.

I'm hoping the bottom one is slower! Dunno how I'd replace 75cfm to that heatsink!

Maaan, it will be a challenge to replace them with adequate fans

[Zich]

That's was huge heatsink   . Seem like use 2 different type FAN, right stiffla?
Can not be sure until the parcel arrived.

[Gator-hex]

Are they both Sunon Maglev PF92251V1-000U-S99 DC 12v 4.7W?

It's 127.43m3/h 75cfm.

I'm hoping the bottom one is slower! Dunno how I'd replace 75cfm to that heatsink!

Maaan, it will be a challenge to replace them with adequate fans

Top one is easy if it's 75cfm replace it with 2x 43cfm = 86cfm.

If the bottom fan is Sunon 2v 2500rpm, leave it as is. If it's faster we'll have to drop the hash speed to get it quiet.

[stiffla]

That's was huge heatsink   . Seem like use 2 different type FAN, right stiffla?
Can not be sure until the parcel arrived.

yeah right, the top one is thicker and I think much louder.
I have deported them now to my toilet with an slightly opened window, but they are still to loud in there . Already waiting for neighbours to complain

[dspbuy]

When are you going to return the money you stole from me Marto? Do you think I will just forget about it?

[loshia]

Can a TP-Link run both Hex16B and Hex8A1 at the same time? Which do u set as default then?

Yes gator. It can. Set it to hex8 but watch it on startup if it will detect all boards properly. If not just reboot it

[marto74]

When are you going to return the money you stole from me Marto? Do you think I will just forget about it?

order ref ?

[Wotan777]

Marto please answer to my friend ^^

@Marto74

(1) I would like to ask for a refund for my order that is more than 2 months old now.
Order reference: UICAWGFJD

OR I would like to get a HEX8A1 card as a form of consolation

(2) Why don't you react to messages sent to technobit.eu?

Best regards,
  W

Marto, please answer.
Order ref is UICAWGFJD

[dspbuy]

When are you going to return the money you stole from me Marto? Do you think I will just forget about it?

order ref ?

ABOIPMBVS

Please do not send me the miner now. It is too late. I have made the order more than 4 months ago, so the miner is now completely worthless (due to drop in BTC value and increase of mining difficulty). I would like to have my money back please (you may send me in BTC).

[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

[Zich]

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  

[Zich]

Here some picture of my board that just arrived  






And fan picture, i bet Gator-hex will be surprises  
Bottom fan is "SUPER FAN" SUNON PMD1209PMB1-A rated at 12,5 W, 4900 rpm & 57 dBA





Upper fan is SUNON PF92251V1-000U-S99 rated at 4,7 W, 4500 rpm & 46 dBA





After trying some setting:

  Hex8A1 Chip Frequency : 250              
  Hex8A1 Chip Core Voltage : 980
  Hex8A1 Set ASIC difficulty to one : 1

Ampere usage on 12 V rail is 30 A

[iFA88]

My board is just arrived too! First screenshot from hashing :

[Zich]

My board is just arrived too! First screenshot from hashing :

Wooo, you had big PSU there  

[stiffla]

Here some picture of my board that just arrived  

And fan picture, i bet Gator-hex will be surprises  
Bottom fan is "SUPER FAN" SUNON PMD1209PMB1A rated at 12,5 W, 4900 rpm & 57 dBA



Upper fan is SUNON PF92251V1-000U-S99 rated at 4,7 W, 4500 rpm & 46 dBA


After trying some setting:

  Hex8A1 Chip Frequency : 250              
  Hex8A1 Chip Core Voltage : 980
  Hex8A1 Set ASIC difficulty to one : 1

Ampere usage on 12 V rail is 30 A

Alright, so the bottom one is the pain in the ass
Do you think about any replacement options? I'm still on the looks for good fans right now

BTW: 30 A are quite ok, so you get approximately 1,44W/GH with this settings ,right? (i have avg 250GH/s)

[Zich]

Here some picture of my board that just arrived  

And fan picture, i bet Gator-hex will be surprises  
Bottom fan is "SUPER FAN" SUNON PMD1209PMB1A rated at 12,5 W, 4900 rpm & 57 dBA



Upper fan is SUNON PF92251V1-000U-S99 rated at 4,7 W, 4500 rpm & 46 dBA


After trying some setting:

  Hex8A1 Chip Frequency : 250              
  Hex8A1 Chip Core Voltage : 980
  Hex8A1 Set ASIC difficulty to one : 1

Ampere usage on 12 V rail is 30 A

Alright, so the bottom one is the pain in the ass
Do you think about any replacement options? I'm still on the looks for good fans right now

BTW: 30 A are quite ok, so you get approximately 1,44W/GH with this settings ,right? (i have avg 250GH/s)

Even with that 4900 rpm, the heatsink is very hot. So i don't want to replace the fan 

That is my rough measurement since i had to measure on 3 wire 
So around 1,44 - 1,5 W/GH.

[Gator-hex]

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! I'll get that down to 3x 2W hopefully.

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