Can somebody please tell me how to set my multiplier?

[balane]

I just can't seem to find it in the BIOS. I can set everything else, fsb, voltages... but just not the multiplier. They have that auto overclocking utility in the BIOS called TOS and I set that to do its job. When I'm looking at CPUZ I can see the multiplier going up and down but I want to just set a clock speed where I want it and leave it.

So how do I set the multiplier permanently?

Also, if you have any recommended settings for overclocking the hardware in my signature please feel free to offer.

I was going to do a 333MHz FSB with a multiplier of x9 and then bump the voltages up a little bit to make it stable.

Thanks.

 

[jmmtn4aj]

Err.. if you want a manual OC, why turn on an auto overclocking utility?

 

[balane]

Did you read that I couldn't find the multiplier setting? Tell me where that is and TOS will go off immediately but right now it's the only thing I could find. I do not know where the multiplier setting is in this BIOS and after 2 days I still can't find it.

 

[wittangamo]

It's in the CELL menu as "Adjust CPU Ratio." There's a screen shot in the middle of this page:

http://www.msicomputer.com/msiforms2/maxP35.asp

 

[SexyK]

You can't set the multiplier on any non-extreme edition Intel CPU.

 

[wittangamo]

You can take the multiplier DOWN, but not UP. Many people do it to increase bandwidth at the same cpu clock.

For example, in theory 8x400=3.2 ghz should give you higher memory benchmarks than 9x356=3.2 ghz on the same Q6600 setup.

Personally, I prefer using the stock multiplier and enabling C1E and EIST to prolong cpu life. The few ticks in a benchmark you might get aren't worth stressing the cpu 24/7 when you don't need the horsepower for surfing or sending e-mail.

I'll use the Q6600 again as an example. The default multiplier is 9X. The stock fsb is 266. 9x266=2.4ghz. But when the system is idling, Speedstep cuts the multi to 6x. 6x266=1.6ghz, which is where the cpu runs when it's not loaded. The voltage also drops from about 1.31 to about 1.2 (from memory, I'm not using stock settings any more.)

Here's a cut and paste from another site that explains this stuff. Most of it goes over my head, but the gist of it is that Intel decreases the multiplier and voltage to prolong cpu life:

C1E enhanced halt state ? Introduced in the Pentium 4 500J-series processors, the C1E halt state replaces the old C1 halt state used on the Pentium 4 and most other x86 CPUs. The C1 halt state is invoked when the operating system's idle process issues a HLT command. (Windows does this constantly when not under a full load.) Entering halt state, which is a lower-power state, will cut a CPU's power consumption and heat production. Intel's new C1E halt state is also invoked by the HLT command, but it turns down the entire CPU's clock frequency (via multiplier control) and voltage in order to work its mojo. This more robust halt state requires significantly less power than the old C1 implementation.

 

[21stHermit]

Originally posted by: wittangamo

You can take the multiplier DOWN, but not UP. Many people do it to increase bandwidth at the same cpu clock.

For example, in theory 8x400=3.2 ghz should give you higher memory benchmarks than 9x356=3.2 ghz on the same Q6600 setup.

Personally, I prefer using the stock multiplier and enablin C1E and EIST to prolong cpu life. The few ticks in a benchmark you might get aren't work stressing the cpu 24/7 when you don't need the horsepower for surfing or sending e-mail.

I'll use the Q6600 again as an example. The default multiplier is 9X. The stock fsb is 266. 9x266=2.4ghz. But when the system is idling, Speedstep cuts the multi to 6x. 6x266=1.6ghz, which is where the cpu runs when it's not loaded. The voltage also drops from about 1.31 to about 1.2 (from memory, I'm not using stock settings any more.)

Here's a cut and paste from another site that explains this stuff. Most of it goes over my head, but the gist of it is that Intel decreases the multiplier and voltage to prolong cpu life:

C1E enhanced halt state ? Introduced in the Pentium 4 500J-series processors, the C1E halt state replaces the old C1 halt state used on the Pentium 4 and most other x86 CPUs. The C1 halt state is invoked when the operating system's idle process issues a HLT command. (Windows does this constantly when not under a full load.) Entering halt state, which is a lower-power state, will cut a CPU's power consumption and heat production. Intel's new C1E halt state is also invoked by the HLT command, but it turns down the entire CPU's clock frequency (via multiplier control) and voltage in order to work its mojo. This more robust halt state requires significantly less power than the old C1 implementation.

Thanks wittangamo, never quite understood that was what's happening. :beer: :beer: