Hi,
They don't mention a lot about it, but EyeOne Match 3.6 is x64
compatible, so in case you don't already know:
http://www.gretagmacbeth.com/index/products/products_color-mgmt-spec/products_monitor-calibration/products_eye-one-display/products_eye-one-display_software-2.htm
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Regards
Madsen