Solved cpu Multiplier set to 43 in bios but only goes up to 4099 mhz on full load. Tags: BIOS CPUs Intel i7 ASrock Last response: April 13, 2014 10:02 AM in CPUs Share santi12345 April 13, 2014 7:57:23 AM It was hitting 4299 mhz before but now it just hits 4099mhz. any ideas? i7-3770 non-k asrock z75 pro3 mobo Thanks More about : cpu multiplier set bios 4099 mhz full load Reply to santi12345 CTurbo a c 472 à CPUs April 13, 2014 8:14:40 AM It's probably throttling back due to exessive heat Reply to CTurbo m 0 l Best solution JOOK-D a c 452 à CPUs April 13, 2014 10:02:45 AM It could be the heat as CTurbo suggested. I believe it could also be due to the way Intel deals with multipliers when all cores are stressed. If a single core is stressed it should hit 4300MHz. However when multiple ones are stressed it drops down to 4100MHz. Reply to JOOK-D Share Ask the community Post an answer Read discussions in other CPUs categories AMD Intel Intel i5 Intel i7 Phenom Cooling Performance !