The best this system can do as far as speed is concerned is a Socket 370 766MHz
Celeron with a slotket that mediates the voltage between CPU and motherboard.
PowerLeap sells this sort of slotket, but it is pricey. Add the costs of a
replacement motherboard, larger hard drive, PCI IDE disk controller, Celeron
CPU, and slotket, and the total is in the neighborhood of a new system. And
there is always the downside risk that the Presario BIOS will balk at accepting
a Celeron.

Frankly, I sell fully outfitted refurbs with legal operating system installed
for less than all the kit it would take to bring the Presario 4640 up to an
almost respectable and functional level... Ben Myers

On Mon, 13 Sep 2004 07:01:44 -0400, "HH" wrote:

Powerleap is wrong I think. The 4640 uses an Intel 440LX chipset. No way it
will run a Coppermine PIII. As for the motherboard only an exact replacement
from Compaq will work Due to the proprietary connectors, including the power
supply. Also, there is an 8 GB hard drive size limit in BIOS on that model,
so you would have to add a PCI IDE controller card to use a larger drive.For
all of these reasons, follow Tom's advice. Save up and get another PC.
HH

"janko" wrote in message
...
I can't seem to get much help from HP/Compaq support.I don't have the
money to buy another computer and I am buying what I need through
ebay but I need the correct part numbers that will be compatible with
this system.PowerLeap web site says that this model can be upgraded
from the 266Mhz to a 733MHz P3 boxed coppermine slot 1,whatever that
means
and I need a used motherboard that has the onboard audio(ESS) to use
the control knob on monitor and the buttons on the tower. Janko

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