Well the Phenom X4s have a total of 512kb. of L1 - 2mbs. of L2 and 2mbs. of L3. The X2 5600 has 256kb of L1 and 1mb of L2 for the 65nm. and 2mb with the 90nm. True a Q6600 overall is faster than a 9850, but going from a X2 5000 to a 9850 will be a huge increase regardless if the Q6600 is faster. Pretty sure soon there comming out with a 95watt 9850 and a 9950, not for sure what the watts are for the 9950
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