ndmmxiaomayi SG 2 in both. The major difference lies in whether it's a 32-bit or 64-bit processor. 32-bit for Core Duo, 64-bit for Core 2 Duo. Another difference is the L2 cache. Core Duo has 2MB, while Core 2 Duo has 4MB.
eagle SG some of the Core 2 Duo chips have 2mb L2 http://www.intel.com/products/processor_number/chart/core2duo.htm
kenn3th SG i thought core duo is 2 processors with 2 lanes while core 2 duo is 2 processors with 4 lanes ?
rainhawk87 SG not core 2 duo is 2 processors with 4 lanes Core 2 quad have 4 processors http://www.intel.com/products/processor/core2quad/index.htm?iid=homepage+qc