Overclock Antminer U1 Guide

Overclock Antminer U1 Guide

The Antminer U1 can run effectively without any hardware mods at frequencies between 1.6 and 2.0 GHS without running into problems. In this Overclock Antminer U1 Guide, you will learn how to overclock your U1 properly. The base frequency of 1.6ghs is achieved with the frequency hex value of 0781. To change the clock frequency frequencies on the U1 you need to change the launch command in the batch file we made in the U1 Setup guide.

Where you see –bmsc-freq 0781 and –set-device antminer:clock=x0781 change the bold numbers to something else in the table. Without modification to the resistors you can safely stick with the frequency hex listed in table 1.

Table 1.


Frequency (MHZ)
ASIC Hash Rate (GHS) 
 Frequency Hex



100
 1.0
 0481


112.5
 1.1
 0501


125
 1.2
 0581


137.5
 1.3
 0601


150
1.4
0681


162.5
1.5
0701


175
1.6
0781


187.5
1.7
0801


200
1.8
0881


212.5
1.9
0901


225
2.0
0981

Caution:

Although it is purported that 2.2 is reachable without a change to resistors, I have not had any luck.
Something to keep in mind when Overclocking is that the Antminer U1’s tend to get hot really fast once you start messing around with the frequency hex so I would recommend using adequate cooling.

Overclock Antminer U1 beyond 2.0 GHs

Antminer U1

To be able to take the Antminer U1 past 2.0 ghs you need to replace 2 resistors. Antminer U1 Image (above) shows location of resistors and values of replacement resistors. R2 being a 10k 0603 SMD Resistor and the R1 starting at 1k and going up to 4.99k to reach recommended max 1.2v

Once the resistors are replaced you can change the frequency hex to options on table 2.

Table 2.


Frequency (MHZ)
ASIC Hash Rate (GHS) 
 Frequency Hex



237.5
2.1
0A01


250
2.2
0A81


262.5
2.3
0B01


275
2.4
0B81


287.5
2.5
4C01


300
2.6
4C81


312.5
2.7
4D01


325
2.8
4D81


337.5
2.9
4E01


350
3.0
4E81

Disclaimer: Any damage caused to your property by overclocking is solely your own responsibility.  Use this guide at your own risk.

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