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Author Topic: Black Arrow 28nm 100Ghash Bitcoin ASIC from $0.49/GH/s  (Read 786812 times)
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opper
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January 17, 2015, 06:50:04 PM
 #7101

Could you have underclocked it more?  How is the noise level at those settings?  I can't find a proper review of these anywhere...

They don't adjust voltage, so they're 1 J/GH at all clockspeeds. Noise-wise they're quite loud.

The voltage can be adjusted with blackarrow's software. Just tried that on my X3 miners and it works like a charm.
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January 17, 2015, 07:31:32 PM
 #7102

The voltage can be adjusted with blackarrow's software. Just tried that on my X3 miners and it works like a charm.

Never seen that setting. Got a screenshot?

Buy & Hold
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January 18, 2015, 12:00:31 AM
Last edit: January 18, 2015, 08:51:19 PM by kodeon.CEO
 #7103

Just managed to get 2 x new back plane and 20 x new hash boards from BA and after a a days work of taking all the heat sinks off the hash boards and then put the two back planes in and managed to make 5 hash boards to test.

The 2 new back planes both don't work, they just turn on and then the fans spin at max RPM.

I tested the 5 other new hash boards I made with one of my other X3's with the back plane it came with and ended up 2 of the 5 hash boards did not work.

Thanks BA.
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January 18, 2015, 06:03:51 AM
 #7104

After 15 months they sent me an X3 with a dead PSU.  Thanks BA!

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opper
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January 18, 2015, 08:30:30 AM
 #7105

The voltage can be adjusted with blackarrow's software. Just tried that on my X3 miners and it works like a charm.

Never seen that setting. Got a screenshot?

Its in the Miner Control Software. Will post a screenshot later today if you still cannot find it. Cheers.
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January 18, 2015, 06:20:23 PM
 #7106

Its in the Miner Control Software. Will post a screenshot later today if you still cannot find it. Cheers.

I'd like to see it. I don't have access to the software.

Buy & Hold
opper
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January 18, 2015, 09:17:20 PM
 #7107

Its in the Miner Control Software. Will post a screenshot later today if you still cannot find it. Cheers.

I'd like to see it. I don't have access to the software.

Here you go:

http://prikachi.com/images.php?images/295/7858295L.jpg

Cheers!
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January 19, 2015, 03:19:13 AM
 #7108

Its in the Miner Control Software. Will post a screenshot later today if you still cannot find it. Cheers.

I'd like to see it. I don't have access to the software.

Here you go:

http://prikachi.com/images.php?images/295/7858295L.jpg

Cheers!

Where did you get it?

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January 19, 2015, 03:42:26 AM
 #7109


Well that's new! Have you done any tests with lower voltages? That could really help people out if the efficiency can be improved.

Buy & Hold
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January 19, 2015, 07:15:12 AM
 #7110


Well that's new! Have you done any tests with lower voltages? That could really help people out if the efficiency can be improved.

I haven't tbh, but when I upped the voltage from 0.81 to 0.85 I noticed a significant drop in the errors count on all 4 machines. Also there are quite a bit options offering different voltages all the way down to 0.5v. The max is 0.9v
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January 19, 2015, 07:20:40 AM
 #7111


Well that's new! Have you done any tests with lower voltages? That could really help people out if the efficiency can be improved.

I haven't tbh, but when I upped the voltage from 0.81 to 0.85 I noticed a significant drop in the errors count on all 4 machines. Also there are quite a bit options offering different voltages all the way down to 0.5v. The max is 0.9v
Can you explain how you got the screen that allows you to change the voltage please ?

I am selling in stock OneStringMiner boards, based on the Bitfury chips. Have a look here: https://bitcointalk.org/index.php?topic=495536.0
opper
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January 19, 2015, 07:30:08 AM
 #7112

Its from the Miner Operator software that BA provides on their website:

http://www.blackarrowsoftware.com/store/download.html

You run it on a PC that is on the same subnet as the miners. It will automatically scan the network and it'll find the devices, from there you can choose from the dropdown menu in the bottom right corner of the software different options for the devices.
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January 19, 2015, 03:16:02 PM
 #7113

how many X3 units have BA shipped? I have yet to receive my unit.

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January 19, 2015, 04:11:53 PM
 #7114

If you didn't get your unit, contact them.  They've already shipped everything out, so they are waiting on addresses from people who haven't received their units.

As to the guy with the bad PSU.  Try removing one hash board at a time to see if it turns on.  If it detects a short in any of the boards it won't function and will throw up a fault light.  Also, if it's not inserted all the way properly it'll do this.

Remove one hash board at a time and try turning it back on.  Do this in a well ventilated room, as the bad hashboard can give you quite a light-show of arcs and smoke if it burns out.


1D7JwRnoungL1YQy7sJMsqmA8BHkPcKGDJ
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January 21, 2015, 12:17:20 AM
 #7115

If you didn't get your unit, contact them.  They've already shipped everything out....





So we should get the compensation units soon, right? Can't wait to see those X1.5's, and unicorns, and Bigfoot, and...
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January 21, 2015, 12:59:16 AM
 #7116

I have tracking for my order 10 x1 /x1.5 Huh
750$ declared value.
I recieve them on friday.
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January 21, 2015, 06:42:34 AM
 #7117

I have tracking for my order 10 x1 /x1.5 Huh
750$ declared value.
I recieve them on friday.

good for you. BA has no news on my missing X3

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January 21, 2015, 07:43:48 AM
 #7118

I have X1's for sale for 0.39 BTC + a shipping label if anyone is interested.

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January 21, 2015, 10:53:10 AM
 #7119

Where is my refund  Angry
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January 21, 2015, 11:09:32 AM
 #7120

15 months and counting... At this point getting a package in the mail from BA would be like winning the lottery.
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