We use cookies to provide you with a better experience. If you continue to use this site, we'll assume you're happy with this. Alternatively, click here to find out how to manage these cookies

hide cookie message
Contact Forum Editor

Send an email to our Forum Editor:


PLEASE NOTE: Your name is used only to let the Forum Editor know who sent the message. Both your name and email address will not be used for any other purpose.

Tech Helproom


It's free to register, to post a question or to start / join a discussion


 

Clock speed of faster processor same as old?


Salamander7

Likes # 0

I have just replaced a Pentium 4 2.80ghz CPU with a 3.80 GHZ CPU. In System info the machine reports the new processor as Pentium 4 3.80 GHZ but the clock speed is reported as 2.89. Why??

System is a Fujitsu Siemens Scaleo P tower with a Fujitsu Siemens D 2190a mother board with Intel 915GL chipset. The BIOS is Phoenix. Win XP Home Edition.

Would a BIOS update help? I have not touched the BIOS at all so should I have entered it and changed a setting for the new CPU.

Like this post
Chronos the 2nd

Likes # 0

If you are using such an old processor that will mean that you are using an equally old motherboard and unfortunately unlike today's motherboards I would not attempt to update the BIOS unless you are extremely confident. Get it wrong and you will have a rather large place mat.

Like this post
Salamander7

Likes # 0

Chronos,

I am aware of this issue. Is the reason the processor is not running at its optimum speed because of the BIOS? Or is there any other cause. I could pay for a BIOS flash but would this make a difference?

Like this post
Fruit Bat /\0/\

Likes # 0

perhaps you need to set the Bas clock and multiplier in BIOS

Base clock x CPU multiplier = CPU MHz Speed

Like this post
Salamander7

Likes # 0

Fruitbat,

Please could you illustrate your point with a simple example? I could certainly enter the BIOS and look for "base clock" but would there be a number of options for me to choose from or the invitation to get involved in some scarey calculations?

It is Phoenix BIOS and the new CPU is 3.80GHZ

Like this post
Fruit Bat /\0/\

Likes # 0

HAve a read here

Like this post
woodchip

Likes # 0

If you can get the manual for the motherboard it should tell you what to change to get full speed from new cpu. it may be BIOS setting, or may be a Jumper on the board

Like this post
Salamander7

Likes # 0

Well I checked out my Phoenix BIOS and it wont give access to the relevant section. The BIOS believes the CPU has a clock speed of 2.80 and thee is no scope for change. I suspect a BIOS update is the only way forward.

Like this post

Reply to this topic

This thread has been locked.



IDG UK Sites

Best Christmas 2014 UK tech deals, Boxing Day 2014 UK tech deals & January sales 2015 UK tech...

IDG UK Sites

LED vs Halogen: Why now could be the right time to invest in LED bulbs

IDG UK Sites

Christmas' best ads: See great festive spots studios have created to promote themselves and clients

IDG UK Sites

Why Apple shouldn't be blamed for exploitation in China and Indonesia