How do i get my overclock stable?

[Tom van der Sloot]

I have an amd 8350 with a corsair h70 @4.5 ghz but when i run prime95 it heats up to dangerous temps. What do i do to remedy this? Would i change the voltage,LLC or something else?

 

[ahnirv]

1. re-seat your heatsink, maybe theres a bubble or mismount
2. lower voltage till you are unstable, lower clockspeed till you are stable
repeat till temps are under control, very dependent on your unique chip
3. file and lap your HS and/or processor, maybe they are not flat and true

OCing has a high skill cap. YAYYY

 

[Tom van der Sloot]

what voltage would you recommend? ive got ~1.45 at the moment

 

[ahnirv]

what voltage would you recommend? ive got ~1.45 at the moment

it's not a one size fits all
have to iterate the process, sometimes it takes days, as far as you are willing to tune it
get a laptop with a spreadsheet, set some a goal - temps for you
start dialing down voltage incrementally, 0.05v or so at a time, test with Prime95 small FFTs and coretemp to check stability and temps.
if it crashes, lower frequency by 100Mhz or something, test again - repeat until you get at least 30 mins of stability or it gets too hot
if it is too hot, lower voltage again and test again - repeat until satisfactory

if you get your temps under control, test with p95 until you get 24 hrs of stability, backing off frequency until it is stable


if you cant get temps under control with backing off the overclock
get bigger fans and/or
remove heatsink from processor and check to see if theres any debris in the thermal grease that is holding the heatsink off the cpu, see if the mating surfaces of the heatsink and cpu are flat or rounded or have any nicks or damaged that would cause a high spot. Re-mount heatsink on CPU taking care that it is resting flat(tightening of mounting screws carefully to not make it too tight on one side to pull it down on the other) on the cpu lid with minimal thermal grease and no bubbles


overclocking has a high skill cap