just brew it! wrote:
(Edited - I originally posted that there were Core 2s without 64-bit, but I now believe this was incorrect. There were definitely 32-bit only Prescotts, I had one at work until just a couple of years ago.)
You're probably thinking about the Intel Core Solo and Core Duo (Yonah) processors. They were 32-bit only and based on the older P6 microarchitecture introduced with the Pentium Pro. The Core microarchitecture, introduced with the Core 2 series of processors, are all 64-bit capable.