Scratching My Head: Core2Duo "Real" Frequency

Dyre Straits · Feb 28, 2007, 06:34 AM

I have a Core 2 Duo E6700 rated @ 2.66 GHz. The Intel mobo is a D975XBX board. BUS speed is 266 MHz. So, in order to get the 2.66 GHz, there has to be a 10X Multiplier, right?

BUT, both PC Wizard and CPU-Z are showing the "REAL" frequency of this CPU as being 1600 MHz with a 6X Multiplier.

Anyone have a clue as to what's happening?

~~DudeBoyz~~ · Feb 28, 2007, 07:00 AM

Have you updated your BIOS?

On my FX60, it would not recognize as a full speed unit until I did.

Dyre Straits · Feb 28, 2007, 07:06 AM

First, before I go back into the BIOS again, I have updated the BIOS to the latest revision.

But, from what I could see in the BIOS a little while ago, it all looked normal.

Dyre Straits · Feb 28, 2007, 07:25 AM

Here's the image from PC Wizard 2007:

And here's the snapshot of the BIOS:

GutterPunk · Feb 28, 2007, 07:54 AM

Can you change the multiplier? On the conroe's you are able to adjust it down, just not go over stock mult.

~~DudeBoyz~~ · Feb 28, 2007, 08:05 AM

After I flashed mine, I had to set the multiplier manually. But I did the CMOS reset jumper on my MB after that and it seemed to auto-recognize everything after that. I was afraid it wasn't going to work - but I'm glad it did. It was an expensive update.

dsdsdk · Feb 28, 2007, 08:10 AM

Intel has Speedstep, just as AMD has Cool'n'Quiet..

When the cpu idles, it lowers the multi. Under load it goes up to 10x.

***Zardon*** · Feb 28, 2007, 08:29 AM

its EIST/C1E taking hold of the processor heat and powerconsumption. If you do something like run Sandra with CPUz open you would see it jump to 10x whenever the processor is in use. Disable it in the bios.

~~DudeBoyz~~ · Feb 28, 2007, 08:31 AM

I think you can avoid that if you change your POWER SCHEME under Control Panel, Power Options and change it from MINIMAL POWER MANAGEMENT.

I set it to Always On, or HOME/OFFICE DESK

**ChaosMinionX** · Feb 28, 2007, 11:52 AM

Its C1E or EIST as zardon pointed out, the new CPUZ 1.39 is now correctly showing what the system is running, before it wasnt picking up clocks for every board. People that have a Bad Axe 2 board will see that even if C1E and EIST are disable, its still enabled. Currently its a bios bug that they are resolving I believe.

Just put a load on your system, and you will see it jump to a 10x multi

Dyre Straits · Feb 28, 2007, 03:02 PM

Thanks, guys. I can stop scratching my head now. Prior to using the latest CPU-Z, only PC Wizard 2007 was showing this. So, it kind of made me think that something was wrong with PC Wizard. Apparently, it's a good program.

So, if you haven't tried it, check it out.

PC Wizard Home Site

I started up Prime 95 with CPU-Z open and definitely did see it jumping back and forth between the 6X and 10X until I set it to use the CPU all the time. Then it became constant at 10X.

**ChaosMinionX** · Feb 28, 2007, 03:40 PM

Quote:

Originally Posted by Dyre Straits

Thanks, guys. I can stop scratching my head now. Prior to using the latest CPU-Z, only PC Wizard 2007 was showing this. So, it kind of made me think that something was wrong with PC Wizard. Apparently, it's a good program.

So, if you haven't tried it, check it out.

PC Wizard Home Site

I started up Prime 95 with CPU-Z open and definitely did see it jumping back and forth between the 6X and 10X until I set it to use the CPU all the time. Then it became constant at 10X.

A side note for ya dyre, you can hit 3.2ghz 8x400 easy with that chip, low temps volts, and a decent cooler like the ArcticCooling Freezer 7pro will get that baby nice and cookin

Dyre Straits · Feb 28, 2007, 10:54 PM

Quote:

Originally Posted by ChaosMinionX

A side note for ya dyre, you can hit 3.2ghz 8x400 easy with that chip, low temps volts, and a decent cooler like the ArcticCooling Freezer 7pro will get that baby nice and cookin

Yeah, I been kind of waiting until I get some better CPU cooling solutions. I've got something here now that should do the job. You'll be hearing about it soon enough.

**ChaosMinionX** · Mar 1, 2007, 01:23 AM

Quote:

Originally Posted by Dyre Straits

Yeah, I been kind of waiting until I get some better CPU cooling solutions. I've got something here now that should do the job. You'll be hearing about it soon enough.

Suggestion on coolers.......
Enzotech Ultra-X
http://www.heatsinkfactory.com/shop/...3&cat=0&page=1

Tuniq Tower
http://www.heatsinkfactory.com/shop/...9&cat=0&page=1

Currently im using the Enzotech Ultra-X and its coming out ontop of the Tuniq, some others are finding as well....heres some links on review/performance

http://www.xtremesystems.org/forums/...d.php?t=132855

http://www.xtremesystems.org/forums/...d.php?t=135504

pics there too. I was first to buy it and do some testing

H3X4D3C1M4L · Mar 4, 2007, 03:00 PM

Zalman's do well for C2D overclocking too, the 7700Cu works like a charm. 1000RPM fan speed and you can still hit 3Ghz with a 6300 and minor voltage increases