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CPU-Z read of my AMD 64 X2 3800 says 1 GHz

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May 7, 2007 3:50:11 AM

Is my AMD Athlon 64 X2 3800+ running at the proper Core Speed?

I downloaded CPU-Z and ran it. It reports:

Clocks (Core#0),
Core Speed 995 MHz
Multiplier x5.0
Bus Speed 199.0 MHz
HT Link 995.0 MHz

The product specs listed on this site say the 3800 is a 2 GHz speed, not 995 MHz the CPU-Z is reporting. I ran a different CPU speed-tester and it reports the same ~1 GHz speed.
http://stores.tomshardware.com/search_techspecs_full.ph...

This other Tom's article lists the CPU-Z read of the 4600 CPU and it shows a speed of over 2400 MHz. Could there be that much of a speed difference between the 3800 and 4600?
http://www.tomshardware.com/2007/03/26/the_gigahertz_ba...

This same Tom's article also says "Windsor type processors are available with 2x 512-kB L2 cache or 2x 1-MB L2 cache, covering the scope of 3800+ (2.0 GHz) to 6000+ speeds (3.0 GHz). "
http://www.tomshardware.com/2007/03/26/the_gigahertz_ba...

Why is CPU-Z reporting only 1 GHz for my 3800? Am I reading the results wrong?

Thanks

More about : cpu read amd 3800 ghz

May 7, 2007 3:57:10 AM

Cool and Quiet - it throttles back the CPU speed when it has been idle for a certain period of time. Try putting some kind of load on the CPU (Prime95, SuperPi) and the core speed will return to normal.

Is it just me, or has this topic been poping up more and more often?
May 7, 2007 3:59:09 AM

Thanks.
I searched the forums for this question but my search did not work correctly, i guess.

Interesting how the Multiplier changes from x5 up to x9 or x10 along with the Core Speed. Multiplier of the Bus Speed?

Where can I manually increase this multiplier to get more CPU speed?
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May 7, 2007 4:26:10 AM

Quote:

Interesting how the Multiplier changes from x5 up to x9 or x10 along with the Core Speed. Multiplier of the Bus Speed?

The two are related: bus speed x multiplier = CPU clock. By adjusting the multiplier, one can adjust the clock speed.

Quote:
Where can I manually increase this multiplier to get more CPU speed?

In your case, you don't want to raise the multiplier, but instead keep it from dropping. Here's a way to disable Cool and Quiet.

Quote:
easiest way to disable-

right click on desktop to bring up menu and click on properties
click on screen saver tab
click on power button in lower right
change power scheme to anything other than "minimal power management"
Click on apply then OK


2nd easiest way-

You can also disable in the BIOS- find option and turn off.

Turning off this feature will always keep your CPU at its default speed, 2000MHz.

EDIT: I feel better now...
May 7, 2007 5:35:33 AM

Its Cool n Quiet. You can disable it, but there isn't really any need to unless you are overclocking. It instantly changes the CPU speed back up to full when it is under load. Doesn't really affect performance, all it does is keep your pc running cool, quiet, and a little cheaper.
!