The E8500 is the fastest Core 2 Duo solution on the market with the clock speed set at 3.16GHz, fully 266MHz higher than the next fastest E series CPU. For a MSRP on the Intel CPU price list of $266 this makes an affordable solution for those not wanting to spend $999 on an Intel CPU like the QX9770 that's upcoming. Dual Core CPUs like the E8500 are excellent choices for the everyday user.
The E8500 also overclocks like a beast reaching 4.389 GHz, a nearly 40% overclock on normal air-cooling. Other people have reached over 4.5GHz on theirs. Dual Core processors still have a market as only the Q6600 Core 2 Quad CPU reaches this level of price but performance on the E8500 beats that CPU in many cases.