Difference Between L1/L2/L3 cache

In your opinion what would be a better cpu

AMD Athlon II X4 640 Propus 3.0GHz Socket AM3 95W 79.00$
http://www.newegg.com/Product/Produc...m3%20processor

Or

AMD Phenom II X4 965 Black Edition Deneb 3.4GHz Socket AM3 125W 94.00$
http://www.newegg.com/Product/Produc...82E16819103727


AMD Athlon II X4 640
has a cache of
L1 Cache4 x 128KBL2 Cache4 x 512KBAnd the


AMD Phenom II X4 965 has
L2 Cache4 x 512KBL3 Cache6MB

What would create a less bottle neck with my system there both pretty cheap Processors.

 

Phenom is unquestionably better than a 640.

http://www.cpubenchmark.net/cpu_lookup.php?cpu=AMD+Phenom+II+X4+965