I may be missing something, but the original poster did not mention 800MHz
FSB, just a minimum 800MHz processor. Perhaps the OP can tell us the reason
for the 800MHz requirement so we can better ascertain their needs?

The Compaq Presario 5006US is a circa 2001 model, definitely long in the
tooth. I have little experience upgrading brand name systems, having built
my own since about 1994. Without detailed motherboard specs, it is difficult
to  predict which cpus will function. While it does not seem unreasonable
that a 1Ghz will work, it is not a sure thing. I have a 800MHz based AMD
based board that I tried to upgrade to a 1.3MHz cpu. Didn't work. You are
also moving from a Celeron to a Pentium that MIGHT be a problem. A BIOS
upgrade MIGHT make it all work happily together.

If you can find the correct processor AND is will work in your system, that
would be your best solution given your $150 limit. Once you start upgrading
the motherboard, you often end up with new memory and having to replace old
peripherals and software that is no longer compatible. If you have not ever
opened up your system, replacing a cpu might be too daunting and having an
experienced assistant would be a plus. That said, I have built and upgraded
many a system and haven't screwed one up yet. Take your time. Check and
double check your installation instructions, and proceed slowly. Come back
to this forum for more details on cpu installation after you make your
choice.

As an alternative, you might be able to find a refurbished computer in the
price range that might be a better solution. Check Dell and Compaq, for
instance.

Hope this is not too discouraging. Once you start upgrading, it often
becomes more expensive than purchasing new which in the long run will give
you better performance.

Jim Maki
[log in to unmask]

> -----Original Message-----
> From: [log in to unmask]

> You will need to get a new motherboard because yours won't
> support 800 mhz front side bus.  You will also need a new CPU
> that will support 800 mhz front side bus (FSB).  FSB is the
> speed at which your mobo will run, not your CPU.  A 1000 mhz
> (1 ghz) chip won't support the FSB you want.  You will need a
> newer Pentium 4 processor running at 2.8 ghz or more to
> support 800 mhz FSB.  You are not going to be able to buy a
> mobo and P4 like that for $150.  You will also need new
> memory to run at that speed as well.  You would be better off
> to look at some Dell computers that cost a little more than
> $150.  If you are absolutely stuck with $150 you will need
> some help to buy reliable used stuff, but I still don't think
> you can do it for $150 even with all used stuff off ebay.
>
>
>
>
> carmen strickland <[log in to unmask]> wrote:
>
> >I'm new-hope I'm doing this right.
> >
> >I have a Compaq presario 5006us with a intel celeron
> >766 mhz processor. 383mb memory-pc100,168 pin
> >dimm,sdram, two hardrives 40gb, one 20gb.
> >
> >I need to upgrade to have a least 800mhz for work
> >purposes. Is it better to get a new motherboard or a
> >new processor and what's the difference?
> >
> >I've been told that my model should take up to 1000mhz
> >pentium processor.
> >
> >I've looked at a few ads for motherboards and am just
> >confused by everything.
> >
> >I have a limited budget, and only @ $150 to spend on
> >this, and am looking for the best route to go. Also I
> >was told to have someone who had done it before
> >install the processor rather than trying it myself. Is
> >it the same with the mother board?
> >
> >carmen strickland

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