I have a HP Compaq CQ70 laptop. This laptop had Intel Dual Core Celeron T1600 CPU. I have replaced the it with Intel Core 2 Duo T7500 which 2.2GHz processor.
I am listing some of the specs of both CPU's for comparison. Note that only FSB and VID Voltage range are different.
Processor Number T7500 T1600[/b]
# of Cores 2 2
# of Threads 2 2
Clock Speed 2.2 GHz 1.66 GHz
Cache 4 MB L2 Cache 1 MB L2 Cache
Bus/Core Ratio 11 10
Bus Type FSB FSB
System Bus 800 MHz 667 MHz
Instruction Set 64-bit 64-bit
Lithography 65 nm 65 nm
Max TDP 35 W 35 W
VID Voltage Range 1.075V - 1.250V 1.075V-1.175V
TJUNCTION 100°C 100°C
Package Size 35mm x 35mm 35mm x 35mm
Size 143 mm2 143 mm2
# of Processing Die
Transistors 291 million 291 million
Sockets Supported PBGA479, PPGA478 PPGA478
The reason I decided to change the CPU is that there is a variant of my laptop (HP Compaq G70) which has same motherboard but core 2 duo T5800 CPU. So I assumed that if replace the CPU with an older C2D CPU it should work.
Now I want to find out if there will be any problems because of this. For example overheating etc.
If you're monitoring your CPU temperature in the BIOS, it's roughly the equivalent of it running at full load. 67C is slightly high for a desktop, though I'd think it's normal for a laptop. I don't have much experience with laptops so someone who is more knowledgeable with laptops should verify this.