overclock antminer u2

overclocking antminer u2

i have antminer u2 i want 2 oc(overclock) it

so i bought the smd(surface mount resistors) of value 4.99k ohms and 10k ohms

i soldered them as per the overclocking guide of antminer u1

replaced resistor r1 which is 1k ohm with 4.99k ohm resistor

and resistor r2 is 10k ohm resistor

resistors size 0603 and tolerance +/- 0.1% from rscomponents website

soldered with little difficulty but got it well

when i tried running cgminer it says the frequency and keeps repeating

next time it returned 5 hardware errors and 3 shares accepted

what i observed is

its i better to oc the miner using software by providing --bmsc options

it shows less hardware errors with provided usb fan

try cooling with water it yields better results

check these links for more link1, link2

advice donot change resistors instead go for better cooling