im a stupid ass

I want to buy a new processor and i dont know what all the shit indicators are ,back in my time only GHZ matters now ;'\
what the fuck is?
64 3000+ /2.0ghz
sp 3300+ /2.0ghz
why this
165 /1.80 ghz cost a shit load of momey more than the others 2?
someone please explain

Opteron 165 is -Dual Core- *plus* 1MB of Cache instead of the 512k of Cache per core on the equivilent mainstream model, the A64.