FX-8350 frequency oscillation?

[shadow-man]

i am using asus m5a78l le  with fx 8350, two ddr3 hyperfuryx 8gb run with 1600

all jumperfree settings a auto. ( i use Overdrive)

C6 and CnQ disabled.

i found out when CPU is fullyloaded.  the clock speed will drop , below is the screen capture for the clock speed while running prime95.

But clock speed can maintain at 4.4ghz if prime95 is off.

i set the cpu voltage to 1.375 . And NB voltage is 1.15.

 

i try to bring back the frequency to 4.0ghz and still same , the clock speed will drop down as usual.

 

What i can do to keep the frequency? because it is so frustrating when playing games...it will cause stuttering when the clock speed drop to 1.4 

[Kilrah]

Pretty much all multicore CPUs have different boost clocks for different numbers of active cores, using all cores -> lower frequency.

[shadow-man]

5 minutes ago, Benji said:

Well, sure it can. But in that case the oscillation in Prime95 is probably the VRMs overheating, as was common with these furnaces that, in most cases, didn't even have passive VRM cooling and thus overheated all the time once the CPU was under any prolonged load. What usually helped the problem was choosing a top-blower cooler (which made quite a bit of air move around the VRMs as well) as opposed to choosing a standard tower cooler which didn't really blow any air on the VRMs.

There is no heat sink or thermal paste around that area, I am using WATER Cooling on my cpu so no air around VRMs?  But I do have 3 exhaled fan around that area...

anythings i can do to cool down the VRM.?

[shadow-man]

Thanks everyone . I finally fix that issue by replace another motherboard with vram...

but there is  another issue pops up.

[frozensun]

Its how FX CPUs work.

I have 8120 and freq in idle never drops below 4 GHz.

Why,dunno,ask AMD and they will tell you that CPU is not supported.