AMD's use a different Processor socket, than an Intel does.http://en.wikipedia.org/wiki/List_of_CPU_sockets#List_of_sockets_and_slots
At least when we are talking the era of your motherboard.
(Real old? Like over 20 years ago, or more? AMD's and Intel's used a lot of the same processor sockets)
The designation VIA KT600.
VIA is a Chipset manufacturer.
Chip and Chipset are slang terms for I.C.
VIA KT600 refers to the motherboard chipset.
The Northbridge chip, and the Southbridge chip,http://en.wikipedia.org/wiki/List_of_VIA_chipsets#Slot_A_and_Socket_A
The VIA KT600 motherboard chipset, was manufactured for the AMD Socket 462, (Socket A -> Same/same), and AMD processors.
Intel Pentium 4's used the Socket 478 processor socket, back in the day; then moved to the LGA 775 processor socket. (Socket T)
This is a Motherboard Diagram, that fits the technology of your motherboard,http://en.wikipedia.org/wiki/File:Motherboard_diagram.svg
CPU = Central Processing Unit.
Another term used is Microprocessor, or simply Processor, for short.
DOES NOT mean Personal Computer.
(If you run into somebody that uses CPU to mean a personal computer -> Slap 'em.
NO, WAIT! Don't! lol!
I can see the headlines now;
"Person slapped for using CPU to mean Personal Computer Perpetrator alleges Joecoolvette of Fixya said to do so." lol!)
This is an example of a Northbridge chip, and Southbridge chip; on a motherboard,http://en.wikipedia.org/wiki/File:ASRock_K7VT4A_Pro_Mainboard_Labeled_English.svg
The Northbridge chip has an aluminum finned Heatsink on it, to help disperse the heat the Northbridge chip makes.
Looks a lot like the Southbridge chip, with the Heatsink removed from it.
Some motherboards do have a Heatsink, on the Southbridge too.
Your line of question makes me want to post some links, to more computer information for you.
Basic info for now. We all have to start somewhere,http://computer.howstuffworks.com/
Scroll down to the subheading in Orange(?) -
What's Inside: Computer
Click on, one at a time; the subheadings;
1) Computer Hardware
2) Computer Peripherals
3) Computer Security
4) Computer Software
Click on the various subheadings in each category, for more information on that subject.http://www.hardwaresecrets.com/
Click on each heading one at a time, at the Top;
A) Case: (Computer case)
C) CPU (Processor)
,and so on.
Basic info up to technical info.
Plus always come back, and see us here.
For additional questions please post in a Comment.