Try 8 cores is less than 3 years!
Note that I said we won't be "
NEEDING" 4-8 core CPUs in the next 4-5 years. Not that there wouldn't be some out there. Hell, my Mac Pro uses 2 of Intel's "Woodcrest" Xeon dual-core processors, so thats 4-core. But, soon Intel will be releasing the "Clovertown" Xeon chips that are quad-core on a single CPU die. Thus, in server and workstation systems, where 2-4 chips are not uncommon, you will be seeing 8-16 core systems. And since Clovertown chips are drop-in replaceable with Woodcrest, I could theoretically have an 8-core system myself later this year.
But, as I was saying, in the normal desktop users world, the need for dual-core is barely needed now. It helps, no doubt. But, when comparing an AMD Athlon 64 system to one using the A64 X2 chips, we're talking about a fast computer compared to a VERY fast computer. There just isn't THAT much software out there yet that takes advantage of having multiple cores. Down the road, there sure will be. And then, having 2, 4, 8 or more cores will be a big plus. But, we're a ways off from that in the normal desktop world.
Hilg