tri cores are just another computing option. amd 'created' them to compete with intel's core2duo. amd's cpus couldn't match the performance of core2duo at the same clock frequency, so they offer an extra cpu core to offset the slower performance. they're a good cpu and certainly fast enough for most users.
the a6702f you mention uses integrated graphics. as long as you can be satisfied playing WoW at medium settings or at a low resolution (1024x768) you should be ok. if you want to run at the full resolution of a widescreen lcd, consider adding a radeon hd 4670 (about $80 from buy.com).
Im in the market for a new desktop after using my last PC for over 5 years. When shopping today I noticed a triple-core processor and was curious because I've never seen anything but duals and quads. Is there a reason why they are not as popular? Or are they just an upgrade from a dual, but a slight step down from a quad? Is there any known issues I should be aware of?
The desktop I was planning on getting is an HP a6702f, which is an AMD 8550 Triple Core @ 2.2ghz, 4g ram.
Honestly, the most graphically intensive thing I'll be running in the foreseeable future is warcraft, Im assuming that this will be more than enough to cover what I want it to do, I was just wondering if theres any issues I Should be aware of before buyng a X3 processor.