Question Is AC adapter really an issue? Dell Precision M6400

[xfisthebest]

Hi there, my cpu is not giving it's best, i only get 1.20 ghz on a 2.26ghz core 2 duo p8400 processor. What i think is that this issue is because of less power provided to my Dell Precision M6400, which i am using without battery (just like an desktop), my current charger is of Brand: LG Volt: 19.5 Ampere: 5.62 . Which means 110Watt but amazon and other e-commerce websites are selling a 210W AC adapter for my laptop. But that much watt are for charging + using laptop, while i only use i don't have battery installed, i tried disabling speed step but it give 1.70Ghz sometimes. Is there any issue if i provided 210watt? will it damage? or will it give best performance as it should give according to (users reviews).

 

[helpstar]

check the temperature of your CPU as well
check if the power management driver(ACPI) is installed and for testing set the power management of windows to high performance

run prime or similar to check the frequency under load

 

[hang-the-9]

The charger that should have come with the laptop is a 210 watt, using a much lower wattage one can cause issues with the system.

 

[xfisthebest]

check the temperature of your CPU as well
check if the power management driver(ACPI) is installed and for testing set the power management of windows to high performance

run prime or similar to check the frequency under load

First of all, temperature is normal according to softwares i've checked. Secondly, there is no power management driver (ACPI) option in my bios or provided by dell for my model, and last thing i've tried cpu-z it shows 1.2 or 1.3 Ghz

 

[helpstar]

which app did you run while CPU-Z showed a max. frequency of only the lowest possible 1.3GHz?

Which operating system are you using?

 

[xfisthebest]

which app did you run while CPU-Z showed a max. frequency of only the lowest possible 1.3GHz?

Which operating system are you using?

OS: Windows 7 home premimum x64 (as support by dell for my laptop ) i mean drivers are available.
i tried windows 10 and 8.1 too both showed 1.20 or rarely 1.22 ghz in the cpu speed (task manager)
the load i put is by using bluestacks mostly,
also cpu-z test can itself take laptop on it's limits without opening any thing. (Tested on other laptop)

 

[helpstar]

Which CPU speed is shown in the laptop´s BIOS menu?

Which BIOS version is on it?

Looks more and more like a PSU or heat throttle problem

 

[xfisthebest]

Which CPU speed is shown in the laptop´s BIOS menu?

Which BIOS version is on it?

Looks more and more like a PSU or heat throttle problem

Bios Version: A13
Cpu speed is shown 2.26Ghz

 

[helpstar]

use cpu-z to read the frequency

 

[xfisthebest]

use cpu-z to read the frequency

Cpu-z see this https://valid.x86.fr/mpmrtv

 

[helpstar]

run userbenchmark.com and post the http link of your result, e.g. https://www.userbenchmark.com/UserRun/28977730

 

[xfisthebest]

run userbenchmark.com and post the http link of your result, e.g. https://www.userbenchmark.com/UserRun/28977730

https://www.userbenchmark.com/UserRun/33629562

 

[helpstar]

while running the benchmark your frequency was 2,25GHz, so should be fine then

check your background processes

 

[xfisthebest]

while running the benchmark your frequency was 2,25GHz, so should be fine then

check your background processes

nope, it didn't cross 1329MHz i was testing cpu my self to. & that 2.25Ghz is description of my cpu, not actual speed in userbenchmark.

 

[helpstar]

in hwinfo you can have a look at the max. frequency the CPU reached at any time. Try this tool running while userbenchmark tests your system

uninstall all processors in device manager, restart and try again

 

[xfisthebest]

in hwinfo you can have a look at the max. frequency the CPU reached at any time. Try this tool running while userbenchmark tests your system

uninstall all processors in device manager, restart and try again

i tried hwinfo with benchmark, it goes 1.27 maximum not more than that, i am scared to uninstall processor driver, can't find on internet to install them again if i messed up, processor: P8400

 

[xfisthebest]

tried uninstall processor drivers also after restart did all tests still same frequency 1.26 and the drivers were auto installed again.

 

[helpstar]

try a bigger power supply

 

[xfisthebest]

try a bigger power supply

tried 230W but gave 1.6-1.7Gh

 

[hang-the-9]

There is a reply to a post on Tomshardware about checking SpeedStep in the BIOS to make sure it's enabled. I have not though of that feature in a long time, but that can limit the CPU speeds.