Block Erupter Overclocking

USB Block Erupters from Asicminer are widely used for mining Bitcoin. They are running at a Hashrate of 330Mh only consuming 2,5W what makes them very power efficient and at are currently cheap avaiable at something below 1 BTC.

Block Erupter Overclocked

In August 2013 Jeremy has proven that they can be Overclocked by exchanging the Oscillator and tuning the Voltage. So lets see how to get this going!

Click on "Weiterlesen" to see how its done!

 

 

 

I swapped the XO53 3,3V Oscillator from stock 12Mhz so 16Mhz, what increased the Hashrate from 330Mh to 440Mh.

Block Erupter Oscillator removed

Also needed is a increase in the core Voltage, from 1.05V to 1.3V, this is done by replacing R1 from 0,7kOhms to 1,5kOhms.

Running at 1,2V (1,2kOhms R1) gave a high Error Rate, with the 1,3V all are running stable.

To handle the heat much larger heat sinks are fittet to the Block Erupters

Stock Heat Sink

what gives a Block Erupter running Stable at 440Mh not needing a fan!

They draw a bit over the 0,5A with this mod, so the fuses inside of the USB Hub needed to go...

USB Hub, fuse removed

That makes a mini Mining Rig looking just awesome Cool

Block Erupter Mining Rig

This is running a bit below 1,8Gh! with a error rate of less than 1% 

If you like this, you can give me a little tip money-mouth

 

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