If my old desktop PC has a Pentium D CPU in it now, can a be pretty certain a core 2 duo E7500 will work in it?
It used to be same socket (both are socket 775 I'm told) means they're compatible; I'm hoping I can just pop one out and the newer one in and it'll work (although the newer CPU may be limited a bit by the Motherboard's FSB speed).
I don't have a manual for the motherboard so I can't check that or Google it to check compatibility.
Update: As suggested, I used CPU-Z to get the MB model number and looked up the CPU compatibility chart on the manufacturer's website. Problem solved. No luck for upgrading, though – the CPU I already have is the max for this mainboard.
Best Answer
I am not saying no, but I wouldn't bet on it.
The CPU limitation is mainly down to the chipset and not the actual socket it fits in to.
Your best bet is to use a tool such as CPU-Z which should be able to give you your motherboard details, then you can confirm on their website what your board supports.
Also, You may need to do a BIOS update to support it, but the manual/documentation should be able to tell you.