If you are refering to the 3 listings for the I5-2500, No differnce between 1 and 3 except pricing. Nr one is for large orders, ie to oems and the price per unit is lower. Item 2 Unk, but may have some internal diff that intel does not allow export to china. If USA and not an oem supplier you get Item 3.
Thank you for the quick explanation. I'm planning to buy one next week for my new gaming rig and I found this and this and wasn't sure what the difference between the two was.
I was initially going to get this which was more expensive and had a normal warranty. The ones I posted earlier both have extended 18y warranties and are cheaper so I was merely trying to understand why that was and if perhaps there was a different (hidden) reason to that.