MultiCore Intel Processor with 64-bit support--how compares with Intel Core 2 Duo?

TurboTax Home & Business 2013 requires Multi Core Intel Processor with 64-Bit support. Does this mean it will not run on my MacBook with Intel Core 2 Duo?

https://ttlc.intuit.com/questions/1943476-64-bit-requirements-for-turbotax-mac?e vent=new_question

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