i want to compare it to other similar e8500 cpus
to see haw its doing after 2 years of using .
It's an E8500, it will perform the same as other E8500's. Your cpu isn't slower because it's 2 years old, if your computer feels slower than it use to it's because windows gets bogged down and becomes slow, not the hard ware. You can go buy a brand new E8500 to replace your current, and your system will perform 100% identical to how it performs now.