Is AMD AM2-940 Sempron 3200+ a AMD64 CPU?

Answer 1

yes,

http://www.amd.com/us-en/Processors/ProductInformation/0,,30_118_11599_14065,00.html

Uses the AMD64 Technology Core as stated in the Key Features for the Sempron processors.

Answer 2

Different chips and Sempron is a cheap version! It is not a AMD-64

The AMD Sempron™ processor performs at the top of its class when running the home and business applications most. The AMD Sempron™ processor’s full-featured capabilities can include AMD64 Technology, HyperTransport™ technology, up to 256KB total high-performance cache, One 16-bit/16-bit link @ up to 1600MHz full duplex system bus technology, and an integrated DDR memory controller.

Specification
Manufacturer AMD
Architecture CMOS Technology 90nm SOI
Frequency 1.8Ghz
Ht 1.8Ghz
Level 1 cache (kb) 128 KB
Level 2 cache (kb) 128
Operating mode 32/64
Reatil/oem? Retail
Socket compatability Socket 940
Socket type AM2
Thermal spec 62W

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