I am building a PC for mostly generic stuff, i play WoW with my wife and we watch most of our stuff online, at first i was going to get a cheap cpu like the x2 5000 or even less but i want to reduce bottlenecking as much as possible and the x2 6000 and x2 7750 kuma would work well with the graphics card i am getting (4830 soon to upgrade to 4850), the x2 6000 has faster operating frequency but the kuma has better cache and they are both around the same price, which one would be the better choice here? (i don't plan on over clocking and no i am not getting an intel cpu so don't bring it up.)
I'd say the 7750 wins this one - do not be fooled by the clocks gap. 7750 is based on a more efficient manufacturing process known as 65nm, whereas 6000 is 90nm. The 7750 has a slight speed edge, a very good power usage edge and its definitly a better overclocker (should you change your mind). Also its a coupla quid cheaper.
X2 6000 is also 65nm now and is more energy efficient than the 7750. The 7750 has a slower clock speed because its a K10(Phenom) chip and is faster clock for clock than the older K8(Athlon, Sempron, Athlon X2). At stock they perform about identical to each other, however the 7750 will pull ahead when overclocking.
The 7750 also comes with a horrible stock cooler, even at stock speeds I wouldn't use the thing.