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seen May 18 '13 at 20:27

Sep
29
awarded  Popular Question
Oct
29
revised CPU giving 1/3 performance compared to same CPUs
Fixed typo - my => me
Oct
22
awarded  Scholar
Oct
22
accepted CPU giving 1/3 performance compared to same CPUs
Oct
22
answered CPU giving 1/3 performance compared to same CPUs
Oct
18
comment CPU giving 1/3 performance compared to same CPUs
Nighthawk: As I mentioned elsewhere, it's not overheated. Fan is clean as a new one and the temperature is 38 C (below normal) and maximum about 50 C (still good for CPU) when used intensively.
Oct
18
comment CPU giving 1/3 performance compared to same CPUs
Horatio: look at this results. Core Duo T2500 @ 2GHz has a score of 965, calculated from 44 samples (point mouse over the bar). cpubenchmark.net/… Pick any laptop from the sample database provided by the PerformanceTest tool and you'll get ~965 score for Core Duo T2500. I don't think FSB could cause 1/3 performance just in my case, no in case of other guys from the 44 sample list. I think it must be something different.
Oct
18
comment CPU giving 1/3 performance compared to same CPUs
I don't think it's overheated. Temperature is bellow normal (38 C) and there's no dust or dirt in the fan. What I see as a problem is that everything from BIOS to various tools is reporting cores as 1.0 GHz throttled down to ~ 690 MHz because of multiplier 6x not 12x. If multiplier is raised to 12x, cores are reported as 2.0 GHz but still throttled to ~ 1400 MHz.
Oct
18
comment CPU giving 1/3 performance compared to same CPUs
I have the latest BIOS. Also tried to boot to linux and got the same results - cores are displayed as 1.00 GHz not 2.00 GHz and benchmark is worse than in WinXP. So it's not a Win/driver/software issue.
Oct
18
comment CPU giving 1/3 performance compared to same CPUs
Hi Beniamin, I've updated the question. According to RMClock it's throttled down from ~995 MHz to ~695 MHz. I've no idea why the core clock is 1.0 GHz and not 2.0 GHz and what's throttling it down.
Oct
18
revised CPU giving 1/3 performance compared to same CPUs
Updated info about diagnostics.
Oct
18
revised CPU giving 1/3 performance compared to same CPUs
Updated info CPU
Oct
18
comment CPU giving 1/3 performance compared to same CPUs
I ran a memtest and updated the question. RAM is probably not causing it.
Oct
18
revised CPU giving 1/3 performance compared to same CPUs
Updated info about RAM test.
Oct
18
comment CPU giving 1/3 performance compared to same CPUs
There's a Dell QuickSet software which allows you to set just actions taken when closing the lid, pressing power or suspend buttons and display brightness. Nothing related to CPU throttling.
Oct
18
comment CPU giving 1/3 performance compared to same CPUs
Laptop is plugged to power, power scheme is set to Home/Office desk (in WinXP). I'm not running any antivirus or other services in the background. (question updated)
Oct
18
awarded  Editor
Oct
18
revised CPU giving 1/3 performance compared to same CPUs
Updated testing conditions.
Oct
18
asked CPU giving 1/3 performance compared to same CPUs
Jul
28
awarded  Tumbleweed