[RIVE] CPU does not go past 4.2Ghz for everything except stress test programs

[Darkzero]

I am using the 4804 BIOS, and my CPU max boost ratio is set to 43 for 4300Mhz target. However, I have noticed lately that the CPU only runs at 4300 Mhz the first 30 seconds to a minute or so after booting into Windows, then as SpeedStep kicks in, the CPU clock starts to fluctuate anywhere between 1200 Mhz and 4200 Mhz, and it only ever goes back to 4300 Mhz if I throw a stress test program like Prime95, the Windows WEI test, etc, at it, and for everything else including games and even 3D Mark, it always stay at 4200 Mhz. I could force it to run at 4300 constantly by turning of SpeedStep or choosing High Performance in Power Options but I don't want to do that. Does anyone have any idea as to why the CPU behaves like this?

[HiVizMan]

I can only imagine it is because of the way that Intel designed their CPUs, dynamic changing as the load requires. The CPU is meant to throttle back when not being used as a power saving mechanism.

I would have to see all your bios and OS settings to actually know what has been set up... If it bothers you then performance mode is the answer I guess.

[darkage]

if you don't want that to happen you have to disable all the power saving features in bios, but modern cpus are not that affected by these features being turned on to save power so its all normal as long as it doesn't bsod all day long 🙂

[Terminal_Meltdo]

There is no benefit to constantly running it at a locked overclocked. The speedstep has no negative effect. Plus, you consume more energy and will wear the CPU out faster. I'm still going strong @ 4.7 daily with speedstep for two years now. 🙂

[HiVizMan]

Good advice here, OP did you resolve your issue?

[Darkzero]

HiVizMan wrote:
Good advice here, OP did you resolve your issue?

No. In fact, I think I first noticed this in BIOS 4310 (see my post in the last page of the blow thread). As I recall, I think the last working BIOS was 4206 or something like that. Anyway, I tried running at 4.5ghz , but the same thing happened - always stuck at 4.2. Now I just manually change to High Performance in Power Options when needed.
http://rog.asus.com/forum/showthread.php?36389-Strange-Turbo-Problem-with-4401-and-4310-Bios/page6

[HiVizMan]

Could you tell me what software like AIsuite you have installed please?

[Darkzero]

HiVizMan wrote:
Could you tell me what software like AIsuite you have installed please?

I don't have any software like AIsuite installed, only stuff like CPU-Z, GPU-Z, MSI Afterburner, Core Temp, EVGA Precision, CPU Fan. I used to have ADA64, but I didn't renew the license.

[twisted1]

Since you have a SB-E cpu an older bios is probably a good idea.

Do you have any active cooling for the VRM's on you motherboard? They get really hot and when they get to hot the cpu speed throttles.

[Darkzero]

No active cooling for the VRM, the CPU is water cooled. I'm only using 1.275v vcore, so I don't think heat is the problem.