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MOONLANDER 2
USB Stick Miner User Guide
The sticks are shipped to you guys with the stock voltage settings of the pots
(which is the flat end of the Pot pointing down). The Core voltage is at around
.75v, which is good for up to around 800mhz stable, and ranges from
~.6 ->
~.95v . The memory voltage is set to ~.85v, and ranges from ~.625 -> ~1.05v
(more on memory voltage in tuning section below).
DO NOT go past .9v on the core voltage, you will most likely damage the
ASIC if you run at high voltages and high clocks for prolonged periods of
time.
T
u
nin
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Tuning any switching transistor based processing unit revolves around supply-
ing enough current so the transistors on the chips actually switch on and off
correctly within their cycle times. The main voltage that will effect performance
and the tuning outlined below is the Core Voltage.
The higher the frequency or “switching time” the less time a transistor has to
“charge” so you need more current (ie turn up the voltage). If these require-
ments are not met the transistors don’t function properly and you have what
you know as a “Hardware Error”
M
em
ory
V
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I included a Pot for memory voltage mostly for efficiency gains by undervolting
memory. Adjusting memory voltage should be a one time thing, you set it at
the lowest setting it will start hashing. There is no benefit in increase memory
voltage at higher clocks, as this wont increase your hash rate or bring down
hardware errors (this is entirely dependent on core voltage). Either your device
will work at a certain memory voltage or it wont, so the goal is to bring the
voltage down to the lowest possible setting that the stick will still hash at.
The stock value for memory is supposed to be .9v, but my tests showed all
ASICs operate fine at .85v which is what they ship at. Most ASICs will work
fine down to ~.76 v.
