Have you asked your laptop manufacturer why your system has a Pentium rather than a Core 2 Duo processor? If the SU2700 is truly a production (launched) mobile processor, you should expect to find details on the following web site: ark.intel.com. If the details for this processor are not in the tool, you might send feedback asking when such information will be available: ARK_Support@intel.com
SU2700 = Core2 Solo 1.3GHz 2MB L2 Cache 800MHz FSB
T6400 = Core2 Duo 2.0GHz 2MB L2 Cache 800MHz FSB
So, the T6400 has dual cores as opposed to the SU2700, which has a single core. Plus, it's quite a bit faster as far as clock speed. If you ordered it
with a T6400, it's not an acceptable substitution by any means.
Glad you found what you were looking for on processors.
For future reference, here are the links for the products you were looking for:
Intel® Pentium® Processor SU2700 (2M Cache, 1.30 GHz, 800 MHz FSB)
Intel® Core™2 Duo Processor T6400 (2M Cache, 2.00 GHz, 800 MHz FSB)
Eric M. Mantion
Corporate Innovation Evangelist
Embedded & Communications Group
ARK.intel.com (Intel® Quick Reference Guide)