CPU speed drops during prime?
- Thread starter huggz123
- Start date
Thermal throttling. Prime is making your CPU hit it's top heat limit, so it's dropping it's speed in order to lower heat and stop your house melting.
Prime95 is not a good test. It's a very non-typical workload, and your motherboard will likely use some kind of overvoltage when running those speeds for stability. At normal clocks, that overvoltage will be absent, meaning Prime is not giving you an indication of stability at normal speeds.
Prime95 is not a good test. It's a very non-typical workload, and your motherboard will likely use some kind of overvoltage when running those speeds for stability. At normal clocks, that overvoltage will be absent, meaning Prime is not giving you an indication of stability at normal speeds.
This could actually be the way you've overclocked your CPU, have you made sure that with 4 cores loaded the multiplier is still 46? If you look in the BIOS under the overclocking options there should be a section showing what the multiplier should be for 1 core, 2 core, 3 core or 4 core loading. They should all be the same or otherwise greyed out if you have it set to All-core I think the term is.
Either that or throttling, have you looked at Coretemp/Realtemp to see what core temperature you're hitting - it will throttle at about 90-95degC.
Either that or throttling, have you looked at Coretemp/Realtemp to see what core temperature you're hitting - it will throttle at about 90-95degC.
