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by mfaisal_i 1 view

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hi,
I want to upgrade my pc to pentium 4 so, there are some embigudies which i have to ask you to make my mind;

1) what is the difference between the socket 423 and 478?

2) In RIMM modules of p4 motherboards four slots are given 1,2,3 and 4, now tell me if i have one chip of 128Mb and other 64Mb how can i install them in RIMM module to have 192Mb ram,
and also tell me that can i use 2 chips of 256Mb in 1,2 slots and 2 chips of 128Mb in 3,4.

3)what is ATx factor, 6 layer pcb (30.5 x 24.4 CM)

the followed quries causes dillema to me and hope you will reply soon.

Yours Sincerly,
M.Faisal Ilyas.

5 replies

by thechas

1. There are 2 different package styles for the P4 CPU.
The different packages are NOT interchangeable.
Your motherboard and CPU must have the same socket.

2. On a P4 system, RDRAM modules must be installed in matched pairs.
Typically, you will install the larger pair in slot 1&2, and the smaller pair in slot 3&4
192MB would be 2 64's and 2 32's
On the larger RAM, CAUTION!!!
I would only use 2 256MB modules (or more) if you are planning to use only Windows 2K or XP.
There is a bug for systems with more than 511MB of ram in windows 9X /Me.

3. ATX defines the form factor for the motherboard and case.
The biggest factors are;
Location of I/O connectors on the motherboard,
Location of mounting holes on the motherboard and case.
Design of the power supply and connector.

A 6 layer PCB has 6 different layers of copper circuit traces.
There is the top and bottom, along with 4 internal sets of circuitry with a layer of insulating fiberglass between layers of traces.

30.5 * 24.2 cM is the rough dimensions of the board.

Chas

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