Can't istall xp

Hi, please see this link for cpu's that are compatible with the above mentioned motherboard's chipset
http://www.cpu-upgrade.com/mb-Intel_(chipsets)/G43_Express.html

The fastest Pentium 3 that will work in your board is a Intel Pentium III 1GHz chip. Here is a link to the specs:
http://www.cpu-world.com/CPUs/Pentium-III/Intel-Pentium%20III%201000%20-%20RB80526PY001256%20%28BX80526F1000256%29.html

You could also get a Intel Celeron 1.1 GHz but it only has half the level 2 cache size so it's actually a bit slower than the Pentium III 1GHz chip.
Here's a link to celeron specs:
http://www.cpu-world.com/CPUs/Celeron/Intel-Celeron%201100%20-%20RB80526RY005128%20%28BX80526F1100128%29.html

You are worrying about nothing.

Intel Pentium Dual Core and Intel Celeron Dual Core are both Intel Core Dual processors.

The performance rate is mesured compared to a single core processor so your 2.2GHz dual core will do the same amount of work as a 4.95GHz single core.

I suggest this is not going to work.
1.Your motherboard is supplying 1.75 DC volts of electricity to the processor socket.
You have installed either a SSpec number SL68Q, or SL62P,
Intel Pentium 4 processor. (The sSpec number is on the top of the processor case)

These Intel Pentium 4 processors use 1.425 to 1.525 DC volts of electricity. If you haven't already, you are going to burn this processor up.

Also, the Intel Pentium 4 that you had before, is based on the Willamette Core. (180nm) These earlier Pentium 4's did not have HT.
Hyperthreading Technology.

The Intel Pentium 4 you have in it now, is based on the Northwood Core. (130nm) These Pentium 4's come with HT.

Even if you could go into your BIOS Setup utility, and change the CPU voltage, and lower it, the HT in the processor you have now, wouldn't work on this motherboard.
(CPU stands for Central Processing Unit. Another name is Microprocessor, or simply -> Processor)

You won't be able to lower the voltage in BIOS Setup, for this processor. IF you did, then you would change the Front Bus Speed, and the ram memory wouldn't work.

Solution?
Obtain an Intel Pentium 4 processor, that uses the Socket 478 processor socket, has a 400MHz FSB, and is based on the Willamette Core.

Here is a list of Willamette Core, Intel Pentium 4 Microprocessors, that will work,
http://en.wikipedia.org/wiki/List_of_Intel_Pentium_4_microprocessors#.22Willamette.22_.28180_nm.29

are you sure that the CPU artitucture is correct for the motherboard that your putting the processor into?, just because it fits doesn't always mean it will work,

No, this highest the P-II went to was either 400 or 450 Mhz. Upgrading a thinkpad CPU may be difficult. Considering prices on used laptops now, I wouldn't think it would be worthwhile, either.

Neil

If the motherboard you have installed accepts a socket 370 processor and you replaced the board, it would also have to be a socket 370 unless you were planning on upgrading the processor also. If you wanted to keep your existing computer case and other hardware, you might want to look for an inexpensive pentium 4 motherbard and processor to replace it instead of the pentium 3 you now have. If you get a new board that uses the same memory that you now have installed it would be a relatively inexpensive upgrade.

Check the manual for jumper settings on the cpu frontsidebus frequency. Also find out your cpus fsb or frontside bus speed and match it with the motherboards jumpers if possible.

How to find out details of the processor?
Pentium III 1ghz - download cpuz www.google.com cpuz download

it will tell you more details of the cpu. If you post here a image of the cpuz screen or all the details it shows you can I tell you the correct fsb speed.

Then you need to find your motherboards manual and the part about those jumpers. and set them correctly.

Just a bit of information. Your slow speed reguards to DSL is bull. Unless your ISP requires your system to run a min Mhz cpu. Cant really suggest how high you can up your cpu unless we know the model of the board & it wouldn't hurt to know the bios version too. Here is a small list from Fixya of Dells & Pent III. http://www.fixya.com/support/dell/motherboards/f5996