question about heatsinks

I am currently having a problem with my PC CPU overheating and BSODing.


I originally had this processor in my box:

Intel Core 2 Duo E6400 Conroe 2.13GHz 2M shared L2 Cache LGA 775 65W Dual-Core Processor

I later swapped it for this processor:

Intel Core 2 Duo E6600 Conroe 2.4GHz 4M shared L2 Cache LGA 775 65W Dual-Core Processor


Someone mentioned to me that the problem might possibly be due to the fact that I may have forgotten to swap the Heatsink/Fans as well. I think I did use the new fan, but I don't remember for sure (This probably happened like 6 months ago, and I now don't remember what I did exactly ).


Since they are in the same "family" of processors, I am wondering if the heatsink/fan would have a significant impact on overheating. If so, is there an easy way for me to tell if the heatsink/fan is properly matched up with the processor (I put the old one in a 2nd computer) i.e. do they have some matching identifying serial number or something? So, if I had to, I could just swap them back?

Or, are the heatsink/fans essentially interchangeable, and I shouldn't have to worry about this?

Please help. I'm at work atm, but at least I'd like to know what to look for, when I get home and open up my box. Any advice would be greatly appreciated. Thanks.


Ste

I'm thinking the thermal paste could be the issue as well. If not, make sure your PC recognizes the CPU as the 6600 and doesn't still think it's the older 6400.