Max clock speed is not attainable

rednus2000 · Mar 21, 2018

Intel Core 2 Duo E7500 @ 2.93 GHz is not reaching the maximum clock speed (CPU-Z as well as Windows 8 task manager shows the max clock speed as 2.2GHz)

Multiplier is working fine 11x

But the base clock speed is not reaching above 200 Mhz..(which is very below the real base clock speed)

Why is this happening? Even thermal throttling is set to 25%, I even tried resetting the BIOS ,installing windows 7,8,10 and even tried remounting the processor..... But nothing helped.......

Can anyone please help me with this........

jojesa · Mar 21, 2018

rednus2000 :

Could you post your system specs...
Intel CPUs have power saving feature that allows the CPU to change speed on demand depending on system load.
You will have to run a tool like prime95 and while the CPU is at full load then check the max speed.
Also check for BIOS updates in case your motherboard is not supporting higher speeds and it gets stuck at 2.4GHz.

rednus2000 · Mar 21, 2018

Specs:
Phoenix Award BIOS v6.0
(Lord Electronics motherboard- Intel GM 965)

4 GB Ram @ 800MHz(Kingston)
500 GB WD hard disk + 80 GB Seagate HDD
@5200 rpm @7200 rpm
Intel Core2Duo E7500 @ 2.93 GHz
Zebronics 450 watts power supply

At first,nearly for a year the CPU's max clock was @ 2.93 GHz...

I ran a few benchmarks, they all show my CPU speed as (at max) 2200Mhz...

BFG-9000 · Mar 21, 2018

The only way this can happen is if your FSB is set at 800 instead of the default 1066. If the multiplier was stuck at the lowest 6x it would be 1.6GHz. When at idle is it currently showing 6 x 200=1.2GHz?

rednus2000 · Mar 21, 2018

BFG-9000 :

You are right .... the front side bus speed is not reaching above 800Mhz

rednus2000 · Mar 22, 2018

https://drive.google.com/open?id=131Aaw4Eh6xOvWgBrThh5bEnZsRPjtIsi

BFG-9000 · Mar 22, 2018

Seems to be a lot of this going around. Go into the BIOS and manually change BASECLOCK (BCLK) from 200MHz to 266MHz. For some reason it's not auto-detecting properly.

It's quad-pumped so 266.6 x 4 = 1066 equivalent FSB, and 11 x 266.6 = 2.93GHz

rednus2000 · Mar 29, 2018

BFG-9000 :

From my BIOS I could only vary the clock multiplier, (6-11)...

jojesa · Mar 29, 2018

Could you post your motherboard model?

rednus2000 · Mar 29, 2018

jojesa :

I already did in my previous posts..

Lord Electronics GM965 Series,
With FSB support for 200Mhz,266Mhz

jojesa · Mar 29, 2018

rednus2000 :

I thought that was a generic name.
I could not find any data about 'Lord Electronics GM965 Series'
Is that the name that appears on CPUZ or printed on the motherboard?

rednus2000 · Apr 1, 2018

On CPU-Z ; there is no name printed on the motherboard.

Anyway thanks for all your help....

Buying a new motherboard....

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