Why does my clock speed go up and down?

r00t · 27-October-07, 04:10 PM

Hey guys,

I've got my new rig up and running and i've been trying out some more oc'ing. I have got upto around 3GHz. It displays 3GHz in post, I boot up into windows and I check CPUz, yet my clock speed is NOT 3GHz, it's around 2.1, it goes up and down as I increase the load. How can I turn this off, it is very, very frustrating as I have tried everything I know and it will not...**** off.

I'm running:
MOBO: Asus P5E Intel X38
CPU: Intel Q6600

Does anyone know why this keeps happening? I know it's just one setting in the bios but I cannot find it. Can anyone help me out?

Cheers guys.

injuneer1 · 27-October-07, 04:22 PM

Have you disabled Speedstep?

r00t · 27-October-07, 04:26 PM

How would I do this and where do I find it?

reflux · 27-October-07, 04:36 PM

Lol....another one of these threads....

Have a gander in the BIOS, and make sure Speedstep and C1E Support are disabled. On my P5K, I believe they are in the "CPU Configuration" section. They're designed to save power by reducing CPU speed when it's not needed.

r00t · 27-October-07, 04:43 PM

Yeah, another one of these threads

Yep It's sorted now, thanks for the tip injuneer1 and thanks reflux.

I did google, but all I got was information on mobile hardware.

reflux · 27-October-07, 04:47 PM

Quote:

Originally Posted by r00t


	I did google, but all I got was information on mobile hardware.

Yeah, that's cause Speedstep was born in laptops, and someone at Intel decided to bring it over to desktops. Great idea if you're not overclocking, but sucks if you are. Also, I've heard conflicting advice on this, but once you reached a stable overclock, don't turn speedstep and C1E back on, because apparently they puts a lot of stress on the clock generator and voltage circuitry if you're running custom clocks and volts.

You should be looking at about 3.6ghz, with ~1.5v with that Q6600. Mine does about 75c under load but that's only a couple of degrees warmer than the Intel certified limit.

killert · 27-October-07, 04:49 PM

Quote:

Originally Posted by reflux


	You should be looking at about 3.6ghz, with ~1.5v with that Q6600. Mine does about 75c under load but that's only a couple of degrees warmer than the Intel certified limit.

[OFF TOPIC] Wow, 3.6 @ ~1.5v Thats bad for a G0 my B3 does 3.6 @ 1.52v

r00t · 27-October-07, 05:10 PM

I've got 3.1ghz atm with a corev of 1.35v. When i'm stepping it up, do I only increase the voltage when I can no longer boot with the voltage still at 1.35v?

killert · 27-October-07, 05:14 PM

I increase when it can no longer pass an hour of OCCT

reflux · 27-October-07, 05:16 PM

You'll need to hike all the other voltages as well - for example, Northbridge, FSB, etc. etc.

But keep everything at the minimum you can while remaining stable because the less power you run through things the better.

r00t · 27-October-07, 05:33 PM

Ok thanks guys. I'm still a bit of a nub, so i'm just fiddling around in bios atm. I've yet to alter memory timings, frequency and such.

reflux · 27-October-07, 05:50 PM

Not sure how your P5E differs to my P5K, but here are the most important things to set:

Set CPU Multiplier to 9x, and enable CPU Voltage Damper (reduces vDroop).

Disable:

-C1E
-Max CPUID Value Limit
-Vanderpool Technology
-CPU TM Function

Set your speeds and volts manually wherever you can, even if you're running something at stock. If you just leave the motherboard to choose sometimes it gets it wrong.

r00t · 27-October-07, 09:25 PM

Still working my wa around the bios. I got around 3.3GHz and had a few random BSOD's on windows boot and just after log in. Lowered down to around 3.2 and it seems fine now. I'm going to leave it going over night and leave P95 going tomorrow, then sit down and read some decent tutorials on overclocking, so maybe I have a clue

If you know any decent tutorials/guides/faq's etc feel free to post away

Thanks again m8

27-October-07, 04:10 PM		#1 (permalink)
r00t Apex Master Tech	Why does my clock speed go up and down? Hey guys, I've got my new rig up and running and i've been trying out some more oc'ing. I have got upto around 3GHz. It displays 3GHz in post, I boot up into windows and I check CPUz, yet my clock speed is NOT 3GHz, it's around 2.1, it goes up and down as I increase the load. How can I turn this off, it is very, very frustrating as I have tried everything I know and it will not...**** off. I'm running: MOBO: Asus P5E Intel X38 CPU: Intel Q6600 Does anyone know why this keeps happening? I know it's just one setting in the bios but I cannot find it. Can anyone help me out? Cheers guys.

27-October-07, 04:22 PM		#2 (permalink)
injuneer1 Apex Techie II	Re: Why does my clock speed go up and down? Have you disabled Speedstep?

27-October-07, 04:26 PM		#3 (permalink)
r00t Apex Master Tech	Re: Why does my clock speed go up and down? How would I do this and where do I find it?

27-October-07, 04:36 PM		#4 (permalink)
reflux Sempr0n?	Re: Why does my clock speed go up and down? Lol....another one of these threads.... Have a gander in the BIOS, and make sure Speedstep and C1E Support are disabled. On my P5K, I believe they are in the "CPU Configuration" section. They're designed to save power by reducing CPU speed when it's not needed.

27-October-07, 04:43 PM		#5 (permalink)
r00t Apex Master Tech	Re: Why does my clock speed go up and down? Yeah, another one of these threads Yep It's sorted now, thanks for the tip injuneer1 and thanks reflux. I did google, but all I got was information on mobile hardware.

27-October-07, 05:10 PM		#8 (permalink)
r00t Apex Master Tech	Re: Why does my clock speed go up and down? I've got 3.1ghz atm with a corev of 1.35v. When i'm stepping it up, do I only increase the voltage when I can no longer boot with the voltage still at 1.35v?

27-October-07, 05:14 PM		#9 (permalink)
killert Apex Tech God	Re: Why does my clock speed go up and down? I increase when it can no longer pass an hour of OCCT

27-October-07, 05:16 PM		#10 (permalink)
reflux Sempr0n?	Re: Why does my clock speed go up and down? You'll need to hike all the other voltages as well - for example, Northbridge, FSB, etc. etc. But keep everything at the minimum you can while remaining stable because the less power you run through things the better.

27-October-07, 05:33 PM		#11 (permalink)
r00t Apex Master Tech	Re: Why does my clock speed go up and down? Ok thanks guys. I'm still a bit of a nub, so i'm just fiddling around in bios atm. I've yet to alter memory timings, frequency and such.

27-October-07, 05:50 PM		#12 (permalink)
reflux Sempr0n?	Re: Why does my clock speed go up and down? Not sure how your P5E differs to my P5K, but here are the most important things to set: Set CPU Multiplier to 9x, and enable CPU Voltage Damper (reduces vDroop). Disable: -C1E -Max CPUID Value Limit -Vanderpool Technology -CPU TM Function Set your speeds and volts manually wherever you can, even if you're running something at stock. If you just leave the motherboard to choose sometimes it gets it wrong.

27-October-07, 09:25 PM		#13 (permalink)
r00t Apex Master Tech	Re: Why does my clock speed go up and down? Still working my wa around the bios. I got around 3.3GHz and had a few random BSOD's on windows boot and just after log in. Lowered down to around 3.2 and it seems fine now. I'm going to leave it going over night and leave P95 going tomorrow, then sit down and read some decent tutorials on overclocking, so maybe I have a clue If you know any decent tutorials/guides/faq's etc feel free to post away Thanks again m8

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
CPU clock speed vs L2 cache	Merkwurdigliebe	Hardware Advice Corner	4	02-April-07 05:01 PM
More Clock speed vs. More L2 Cache	OCBeats	AMD CPU/Motherboard OC	4	21-August-06 06:38 PM
Core clock and Memory clock speed	Konrad	Video Cards	5	06-January-06 10:25 AM
what is the clock speed of a 600Mhz cpu?	GLO	Anything Goes	6	03-September-05 04:28 AM
How come the operating clock speed is lower?	pixelharmony	AMD CPU/Motherboard OC	7	11-June-05 05:34 PM