Why is my CPU dropping to 1.6ghz even though high perf mode is enabled?

[escrow4]

That CPU is supposed to boost to something like 3.5GHz or so stock all cores loaded. Set EVERYTHING to stock, CPU settings to stock, Turbo on. See if that fixes it.

 

[lyssword]

strange case indeed, never seen anything like this.

 

[BSim500]

Nope, I noticed it today in a game, as I was standing still my framerate kept going like this

130....97...130...97....130....97

so I alt tabbed out, and noticed my CPU usage kept changing at the same time as the fps in the game, so then I pulled up CPU-Z, and saw the cpu speed changing from 4.0 to 1.6ghz in sync with the framerate drops.

Have you tried changing it back to Balanced (in case "High Perf's" registry settings are corrupt)? And then make sure the following settings are set under Control Panel -> Power Options -> Balanced -> Change Plan Settings -> Change Advanced Power Settings -> Processor Power Management:-

Minimum Processor State = 5%
System Cooling Policy = Active ("increase fan speed before slowing CPU") and NOT Passive ("slow CPU before increasing fan speed").
Maximum Processor State = 100%

Try turning turbo ON in the BIOS. If that doesn't work, try installing that Intel XTU utility that shows if the CPU is actually throttling?

 

[chubbyfatazn]

You told me to post more pics, I did so, within minutes, and this is how you respond?

Are you serious? He's already responded to you multiple times since you created the thread. You're not paying him, he's not obligated to stick around and help you, and you haven't thanked him once for what he's tried to help you with already.

You're a douche and an idiot (not that we didn't already know that from your countless inane posts).

If this constitutes a callout or whatever then so be it, gimme an infraction.




Come on.

You been here long enough to know there's no personal attacks allowed.

Find other ways to express yourself without the name calling.



esquared
Anandtech Forum Director

 

[mikk]

Here's some more screenshots:

Disable Speedstep and other Cx power saving features in the Bios just to see if it makes a difference. Also I would start with everything on default, you obviously overclocked your CPU.

 

[futurefields]

tried all these suggestions, the cpu wont stop dropping to 1.6ghz

 

[futurefields]

I know you have checked the temperatures in Windows, but how about the BIOS?

Is the CPU fan connected to the CPU fan header? If so, what speed numbers are you getting for that fan?

Once thing you could try, is to set the CPU fan the max speed and see if that changes anything.

Yep, fans are set about 1900rpm, cpu temp is 32, mb temp is 28

 

[mikk]

tried all these suggestions, the cpu wont stop dropping to 1.6ghz

Does it run in the Bios with only 1.6 Ghz as well? Maybe you should try a different bios.

 

[ZGR]

Do you happen to have another Z77 board or a spare cheapo 1156 based Celeron? If not, you can try using Throttlestop as it let's you force specific clockspeeds in Windows.

Another thing I'd try is to force a multiplier for 1.5 GHz or below and maybe tweak the bus multiplier to see if your clockspeeds change at all from the BIOS.

I'd turn ThrottleStop on and clock the chip down to 1-1.2 GHz for a bit, then see if you can get to 2.0 GHz or something in the app.

Could be the mobo, windows, or your cpu I'm guessing. Good luck..... :/

 

[james1701]

Did you disable the C states in the BIOS?

 

[Ketchup]

Yep, fans are set about 1900rpm, cpu temp is 32, mb temp is 28

Previous question was a good one - can you tell what speed the CPU is in the BIOS? With that CPU temp, it's probably not.

Let me tell you what I would do at this point:
A fresh install of Windows on another drive/ partition.Install drivers and testing material. I wouldn't worry about much else, like Windows updates.. See if the problem is the same or gone.

 

[Burpo]

At this point you should run CPU-Z and a stress/benchmark application at the same time. If while doing the test CPU-Z is reporting speed fluctuations as you indicated, then you can take steps to isolate the cause. Speed changes between 1600 and whatever, because when the system is idle it only uses 1600 to save on power. If a more demanding application is run, it should run stable at a higher speed. If it doesn't, it could be a bad flash, a weak power section or VRM on the board. It could also be a bad temp sensor, although I personally haven't seen that. A corrupt flash might be the problem. Did this issue happen after updating bios or before? If it was doing it before the latest flash then further diagnosing may require a dif CPU or motherboard..

The only other thing I can think of is if you have wildly varying voltages at the wall socket (for some unknown reason).

 

[Ketchup]

Yep, fans are set about 1900rpm, cpu temp is 32, mb temp is 28

When you have time, would you post us a picture of your Hardware Health Event Monitoring screen?

 

[futurefields]

Everything is still at default.

The RAM line is the one thing sticking out to me that is different.

It never said anything about shared memory in the past.

Only now is it saying that, which is coinciding with these CPU issues I'm having.

 

[Burpo]

No CPU-Z shots while running say Cinebench? That's going to show more than bios screens.

 

[futurefields]

 

[Ketchup]

Shared memory is only because the Intel Graphics chip is enabled.I believe this was covered earlier. Currently, I am starting to wonder if something went haywire on your board.

 

[Ed1]

What HP profile does on my 3570k is it still idles at 1600, but any load at all it will go straight to 4300 (or whatever turbo is set).
With a balance profile, it will idle at 1600 but at a load, it will go in steps up, so unless you run prime95 or something real stressful it won't jump to max right away .

AFAIK, if you want to keep high clock you have to disable speedstep and turbo .
On Asus MB set cpu multiplier in CPU management , not in AItweaker section .
Also you might need to set a manual voltage, not auto or offset ,though not sure as never tried that .

 

[BSim500]

Futurefields, do you have a spare HDD you can install Windows on just to test? Or maybe a Linux boot DVD of some kind with a monitoring utility (I have no Linux experience and can't help you there but surely there's a fairly easy to use one out there somewhere with real-time monitoring of CPU freq)? Testing it on another OS / reinstalled Windows will at least eliminate current installation software / windows setting. As ketchup79 said, it's also entirely possible that your board has just developed a fault (I've seen weirder faults when a mobo goes wrong).

Edit : I may be remembering incorrectly, but someone had CPU frequency issues a short while ago after installing a certain new version of Intel HD drivers. Have you changed any drivers recently (especially chipset / GFX)? Uninstall Intel HD if you're running a dGPU?

Edit 2 : Have you tried other monitoring software like TMonitor just to rule out an iffy CPU-Z?

 

[futurefields]

Shared memory is only because the Intel Graphics chip is enabled.I believe this was covered earlier. Currently, I am starting to wonder if something went haywire on your board.

How do I disable it?

When googling, the only answer I get is "if you have a dGPU enabled, the iGPU will disable automatically" yet I clearly have a dGPU enabled, but there is still shared memory which alludes to an iGPU being enabled. But I don't know where to confirm any of this in Windows.

 

[futurefields]

I'm going to clear the CMOS on my motherboard.

 

[BSim500]

How do I disable it?

When googling, the only answer I get is "if you have a dGPU enabled, the iGPU will disable automatically" yet I clearly have a dGPU enabled, but there is still shared memory which alludes to an iGPU being enabled. But I don't know where to confirm any of this in Windows.

Does the Intel iGPU look enabled in Device Manager? Do you have that "Lucid Virtu" thing (your motherboard seems to support it)? Try looking in the BIOS for a "VirtuMVP" or "Lucid Virtu" or "iGPU Multi Monitor" option and disable it.

Edit : It's mentioned on page 55 of your manual. Disable "iGPU Multi Monitor" under "Northbridge" BIOS configuration page.

 

[Burpo]

I'm going to clear the CMOS on my motherboard.

:thumbsup: :thumbsup:

 

[futurefields]

Does the Intel iGPU look enabled in Device Manager? Do you have that "Lucid Virtu" thing (your motherboard seems to support it)? Try looking in the BIOS for a "VirtuMVP" or "Lucid Virtu" or "iGPU Multi Monitor" option and disable it.

Edit : It's mentioned on page 55 of your manual. Disable "iGPU Multi Monitor" under "Northbridge" BIOS configuration page.

I already went down that road of disabling that setting in the UEFI and it indeed got rid of the "64 mb shared memory 2mb gtt memory" line in BIOS but it did not do anything about my cpu throttling.

Since I reset my bios back to default those settings are back to default, the thing is I never had to touch those settings since I built this rig in 2012. All these problems are just now starting.

I'm going to reset my CMOS switch on motherboard here in a minute. I'm eating a pizza right now. You cant forget to eat when you are doing this kind of stuff.

 

[Burpo]

Did you use Instant Flash or Windows to flash?