- Joined
- Jan 23, 2001
Setting: asrock z77 pro4m (4+2 phase), 3770k, delidded, scythe kotetsu (120mm crossflow design), 44x at default Vcore. my case doesn't have a 'window' on the backside of the cpu socket....solid metal.
It will throttle after a few minutes of priming. Core temps stabilize in the low 60's, and then the vrm heatsinks and particularly the adjacent chokes get fairly hot and it throttles back to default speed for a few seconds at irregular intervals.
a couple of threads elsewhere mention lowish quality mosfets on this particular board and having similar issues limiting overclocks.
Exploring options before taking things apart:
add small fans directly over vrms (challenging given space taken up by cpu hsf)
remove/replace vrm sinks with better paste (AS5?), unless pads are required because of uneven height
add small copper sinks (surplus in the junk drawer) to the chokes with epoxy. the chokes run much hotter, but IIRC are designed to do so
or
ignore it because it only seems to be an issue under prime or IBT
going to water won't help other than having much more room to aircool the mosfets.
I can pull out the old laser thermometer if anyone wants actual numbers.
It will throttle after a few minutes of priming. Core temps stabilize in the low 60's, and then the vrm heatsinks and particularly the adjacent chokes get fairly hot and it throttles back to default speed for a few seconds at irregular intervals.
a couple of threads elsewhere mention lowish quality mosfets on this particular board and having similar issues limiting overclocks.
Exploring options before taking things apart:
add small fans directly over vrms (challenging given space taken up by cpu hsf)
remove/replace vrm sinks with better paste (AS5?), unless pads are required because of uneven height
add small copper sinks (surplus in the junk drawer) to the chokes with epoxy. the chokes run much hotter, but IIRC are designed to do so
or
ignore it because it only seems to be an issue under prime or IBT
going to water won't help other than having much more room to aircool the mosfets.
I can pull out the old laser thermometer if anyone wants actual numbers.