Dell Dimension L433c cpu upgrade??

[jjmIII]

Hi everyone

I'm having a small problem.
Do you guys (girls) know what cpu I can upgrade a Dell Dimension L433c to???

It's an 810 chipset. I thought it should support a Celeron 900. Bought a used one, but no go..... ???

Any help appreciated. -Jim

 

[ElFenix]

did you update the bios?

sometimes a processor won't be recognized by the bios. i don't know if that would keep it from posting, though.

 

[jakesdad]

Looking at that system at Dell's website...

http://support.dell.com/support/edocs/systems/dcol/specs.htm

...that machine tops out at 500MHz because of the 66MHz system bus limit. That's why the Celeron 900 didn't work - that for a 100MHz bus.

Now then, the 500 is the top end at the time Dell made that machine. Intel went on and made 66MHz bus Celerons beyond 500. There's the 566, 600, 633...up to 766. Probably some other flavors in there too, but I think Intel stopped at 766, because the 800MHz version is the first to jump the system bus up to 100MHz.

So, it's possible, that you could install a 766 Celeron in there. The BIOS may not be new enough to read it as 766, but it may still run it that fast.

Joel

 

[jjmIII]

I just don't see why it won't take a 100bus chip, since it's an 810 chipset.

I'm afraid it will only take the old style 533 and not even the 533a and up (66bus).

Any thoughts ???????

 

[jakesdad]

It could be that the motherboard is locking it to 66MHz regardless of the chipset. There may be a physical jumper on the board to change it - or not... depends on the board maker. And you can bet that Dell, like most of the big system makers at the time (or even now) don't provide a way to change it in the BIOS.

You probably had to jump to another model number from Dell to get the 100MHz board version.

 

[halw]

Check powerleap.com for a processor upgrade to your system. They may have a solution there.

 

[jakesdad]

I just looked up the difference between the 533 and 533a and there was a physical change to the chip including the socket package (even though it's the same number) - PPGA for the older chip and FC-PGA for the new one. The newer FC-PGA also reguired a different voltage setting which the older PPGA setup didn't allow for. Intel also warns against using the FC-PGA Celeron in older 810 chipset motherboards which I'm sure includes your Dell given the age of the processors it supports.

Sorry, but it looks like you're stuck.

Joel

 

[jjmIII]

Intel also warns against using the FC-PGA Celeron in older 810 chipset motherboards

Great info. Where did you see this??

...and THANKS for all the help

 

[jakesdad]

I found the info at Intel's website.

This page is the Celeron group:
http://www.intel.com/support/processors/celeron/

This is the page specific to FC-PGA version...
http://www.intel.com/support/processors/celeron/fcpga.htm

In the "Known Issues and Solutions" section, there are few more links about issues like putting a FC-PGA chip in a PPGA socket. Two below that is about older 810 chipsets.

 

[jjmIII]

I had a chance to try a 566 Celeron from another pc I was working on. It is of coarse a Coppermine core unlike the 433 that the rig started with.

To my surprise...it worked!

I put the 900 in the other guys rig, and they both got an upgrade .

Now I wonder if the original rig the 900 wouldnt work in, would take a 766 (the last 66fsb chip) ???