Difference between CPU's?


Aug 16, 2011
Currently getting parts for a build and I was looking at these two
Intel Core i5 2500K 3.3GHz Socket 1155 6MB Cache Retail Boxed Processor http://www.ebuyer.com/251596-intel-core-i5-2500k-3-3ghz-socket-1155-6mb-cache-retail-boxed-processor-bx80623i52500k
Core i5 2500 3.3GHz Socket 1155 6MB Cache Retail Boxed Processor http://www.ebuyer.com/251597-core-i5-2500-3-3ghz-socket-1155-6mb-cache-retail-boxed-processor-bx80623i52500

Because the second one is about 10 pounds cheaper for me on ebuyer but I don't understand why so would like to know to see if its worth putting the extra ten pound forward.

I also looked at this too Intel Core i7 950 3.06GHz Socket 1366 8MB Cache Retail Boxed Processor
and was wondering why that is more expensive since it has lower GHz.

Any recommendations on which one too get would also be welcomed thanks guys.


Aug 1, 2011
The 'K' processor has unlocked core multiplier, so you can overclock it on a P67/Z68 board.

The non-K version is exactly the same processor with a locked multiplier, so its not overclockable.

The i7 950 has larger L3 cache and hyperthreading tech. It can process 8 threads at the same time compared to 4 in the i5.

I'd recommend you the i5 2500K. The extra ten pounds are worth it.

Don't go for i7 950 as its an old processor which supports LGA1156 socket. i7 2600 is the latest Sandy Bridge i7, but I dont think spending 100$ more for hyperthreading is worth it unless you do a lot video transcoding and gaming at the same time.