Logitech :

Basic
CPU Minimum = 1.0 Ghz
CPU Recommended = Core 2 Duo 2.4Ghz or better
RAM Minimum = 256
RAM Recommended = 2GB

HD
CPU Minimum = Core 2 Duo 2.4Ghz or better
CPU Recommended = i7 Quad Core 2.6Ghz or better
RAM Minimum = 2GB
RAM Recommended =4GB


MS:
Minimum :Intel Dual-Core 1.6 GHz or higher, 1 GB of RAM

Recommended: Intel Dual-Core 3.0 GHz or higher, 2 GB of RAM