Topic: [ANN] Technobit HEX8A1 -240 GHs Coincraft A1 board- Finished production - page 32. (Read 72425 times)
February 15, 2014, 08:56:29 AM
Guess everyone busy with their new toys right now
February 15, 2014, 02:26:41 AM
Cool. Thanks for testing that.
I think Bitmine were using 830mV in their video. http://www.youtube.com/watch?v=91MuwGOgRFo
I think Bitmine were using 830mV in their video. http://www.youtube.com/watch?v=91MuwGOgRFo
No problem
But i am not sure about their setting. The cgminer only show 8/256
At 0:47, watch in 720p full screen, and you can see SYS_CLOCK=830MHz
But 17A/204W is awesome. I'll be happy with that! That's close to 1GH/W
February 14, 2014, 09:55:37 PM
Cool. Thanks for testing that.
I think Bitmine were using 830mV in their video. http://www.youtube.com/watch?v=91MuwGOgRFo
I think Bitmine were using 830mV in their video. http://www.youtube.com/watch?v=91MuwGOgRFo
No problem
But i am not sure about their setting. The cgminer only show 8/256
At 0:47, watch in 720p full screen, and you can see SYS_CLOCK=830MHz
But 17A/204W is awesome. I'll be happy with that! That's close to 1GH/W
And i touch the heatsink, it's only warm with 4900 fan
830MHz mean around 212 on our setting
February 14, 2014, 09:45:26 PM
Cool. Thanks for testing that.
I think Bitmine were using 830mV in their video. http://www.youtube.com/watch?v=91MuwGOgRFo
I think Bitmine were using 830mV in their video. http://www.youtube.com/watch?v=91MuwGOgRFo
No problem
But i am not sure about their setting. The cgminer only show 8/256
At 0:47, watch in 720p full screen, and you can see SYS_CLOCK=830MHz
But 17A/204W is awesome. I'll be happy with that! That's close to 1GH/W
February 14, 2014, 09:38:14 PM
Cool. Thanks for testing that.
I think Bitmine were using 830mV in their video. http://www.youtube.com/watch?v=91MuwGOgRFo
I think Bitmine were using 830mV in their video. http://www.youtube.com/watch?v=91MuwGOgRFo
No problem
But i am not sure about their setting. The cgminer only show 8/256
February 14, 2014, 09:30:49 PM
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?
Some test result
With 220 & 880mV, ampere usage on 12V rail is 20A
Then 200 & 870mV, ampere usage on 12V rail is 17 A. hardware error is very low
Cool. Thanks for testing that.
I think Bitmine were using 830mV in their video. http://www.youtube.com/watch?v=91MuwGOgRFo
February 14, 2014, 08:27:10 PM
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?
Some test result
With 220 & 880mV, ampere usage on 12V rail is 20A
Then 200 & 870mV, ampere usage on 12V rail is 17 A. hardware error is very low
February 14, 2014, 03:46:51 PM
Would bigger aluminium block help? Is it hot at on edges?
a bigger block would really help, but technobit wast too stingy to put a bigger one on it 
It's really tall already, but if it could be wider, 120 or 140mm wide, you could use larger fans that have more CFM but less noise than a 92mm fan.
I don't like the bottom heatsink being in a different direction to the top. I'd rather it was running the same direction as the top one, then you could put a big fan on one end and blow air down both the heatsinks and put it in a tunnel. It looks a lot of hassle to manufacture the bottom heatsink, the way they made it, with lots of cut outs.
I'm sure Marto thought it was best to deliver 260GH, noise dB(A) wasn't mentioned in the purchase contract, but GH was!
February 14, 2014, 03:46:29 PM
Would bigger aluminium block help? Is it hot at on edges?
a bigger block would really help, but technobit wast too stingy to put a bigger one on it
February 14, 2014, 03:44:13 PM
Would bigger aluminium block help? Is it hot at on edges?
a bigger block would really help, but technobit wast too stingy to put a bigger one on it
February 14, 2014, 03:39:22 PM
Would bigger aluminium block help? Is it hot at on edges?
February 14, 2014, 03:32:30 PM
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
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
February 14, 2014, 02:49:26 PM
Haha 79dBA
For those who don't understand how noisy this is...
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!
For those who don't understand how noisy this is...
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
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!
February 14, 2014, 02:35:10 PM
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'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
February 14, 2014, 01:47:01 PM
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
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.
February 14, 2014, 01:06:12 PM
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
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
February 14, 2014, 10:18:00 AM
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
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?
February 14, 2014, 10:12:36 AM
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
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
February 14, 2014, 10:09:54 AM
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
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.
February 14, 2014, 10:03:58 AM
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
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.
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