CPU help needed Athlon x2 3.4ghz v Athlon x4 3.2ghz

[Skeeuk]

 

i wonder if any of you can help me out, i currently game using an Athlon x2 270 3.4ghz

whats the best budget AMD cpu around the £60 - £70 range?

i am currently looking at this http://www.overclockers.co.uk/showproduct.php?prodid=CP-334-AM its an Athlon x4 3.2ghz one of the selling points for me  is its low power condumption

for genral all round use plus gaming will it perform better than my Athlon x 2 in all tasks? i know the clock speed is a little quicker on my x2 but with 2 extra cores will i notice a tangable difference? plus would there be any benifit on keeping the x2 over the x4?

i use a samsung syncmaster with max resolution of 1440 x 900 and games look pretty neat if im being honest(much better than my ps3) so full 1080p is out of the question anyway the 1440 x 900 is suffice.

my graphics card is a radeon hd 7770

just a few screen grabs above to give you an idea how my set up currently runs, i would ideally if the cpu permits is turn up individual graphics seeting up higher

thanks for any input