AVX offset necessary?

[Melodist]

Hello there,

 

I've noticed that Cinebench R20 is using AVX, which by my offset in the BIOS then lowered the CPU Clockspeed by 300 MHz.

 

However, if I remove the AVX offset, the temps during the benchmark are totally fine?

 

Does the AVX offset protect your CPU during AVX instructions from overheating or does it have to do with voltage?

 

Would I damage my CPU without the AVX offset, even though the temps are good?

[porina]

Cinebench probably doesn't use AVX in a very intensive manner. If you were to run Prime95 for example, you'd probably want to keep that AVX offset in place. So, you could get some extra performance by relaxing the AVX offset, but more strenuous AVX workloads may not be stable any more.

 

Generally speaking, AVX can allow the CPU to do much more work than otherwise, with a corresponding increase in power used to do so. It is time efficient, not necessarily power efficient. By lowering the clock (maybe voltage too?) helps to reduce power somewhat and also increase stability. Chances are you'll run into instability before you could do any harm.

[Jurrunio]

AVX offset on Intel is more often used to squeeze more frequency, temperature and sometimes voltage headroom during non-AVX workload. Imo you should do your OC and stress test without AVX first, then add AVX workload and offset if it's not stable.

 

[Melodist]

3 hours ago, Jurrunio said:

AVX offset on Intel is more often used to squeeze more frequency, temperature and sometimes voltage headroom during non-AVX workload. Imo you should do your OC and stress test without AVX first, then add AVX workload and offset if it's not stable.

 

Well I guess when I'm running my CPU at the recommended Turbo Boost 3.0 by Intel, then offset shouldn't be necessary?

[Jurrunio]

39 minutes ago, Melodist said:

at the recommended Turbo Boost 3.0 by Intel

wut

 

dont tell me you're using some auto oc tool