Inspiron 1525 CPU upgrade

You can't use BGA CPUs - they aren't socketed (they're designed to be soldered to the system board).

Just about any core 2 Duo on the 800 MHz bus will work just fine, in micro FC-PGA format.

The newer Core i and Celerons derived from them - and the 1066 MHz Core 2s -- will not work.

thanks for the advice. My problem is that I cannot fine a exact match of micro FC-PGA. For example: T3100 is 478-pin micro-FCPGA package, not 479 pin. I think they are not the same. correct me if I am wrong.

478 and 479 are often used interchangeably.

The Core 2 Duo FC-PGAs will work in the 1525 as long as the bus speed is 800 Mhz or lower.

I think CPU-Z is a bit misleading. It says my CPU is Celeron M 550 2GHz socket 479 micro FC-PGA. Intel website indicates it's "PBGA479, PPGA478".

After all, I should be looking for a 478 ping mPGA anyway!

on the 479 and 478 issue, I have fund 2 interesting sites, they both suggest that the 498 CPUs cannot be used on 479 sockets, even it can fit.

en.wikipedia.org/.../Socket_479

reviews.ebay.com/Intel-apos-s-479-Socket-Explained-and-Compared-to-the-478_W0QQugidZ10000000000074521

These are the CPUs Dell shipped with this model:

ntel Celeron 540, 550 or 560, Intel Pentium Dual-Core T2370, T2390, or T2330, or Intel Core 2 Duo T5250, T5450, T5550, T5750, T7250 or T8100

so can i use a 478 pin CPU when my currently using a 479 CPU?

From the list above, yes.

ok thats great, cause i can't find meany 479 CPUs, so i just have to make sure that the bus speed isn't faster then 800mhz then?

I have an Inspiron 1525 I am running a T9300 2.5 GHz with 800MHz Front side bus. I have not seen one that works and is faster. I hope this finds you well.

Thanks for the Post, just got one today and it needs a CPU and memory boost.  Will replace CPU with the T9300 and boost memory from 2GB to 4GB. 

how did your upgrade work?

I just upgraded the ram to four gig.  I am interested to know how that cpu worked out and what else you did to make it work. 

The upgrade went without a hitch and works just fine.  Would advise making the upgrade.

Thanks for the reply

did you need a bios update or anything other then swaping CPU's

I just swapped CPU's.  I did check that the latest Bios had been installed and maxed out the memory.  Gave it to a church school where students run some education programs like Mavis Beacon Typing program etc.  Works great there.