Infinitecoin is Litecoin-based and using scrypt proof-of-work, so this Litecoin Mining hardware comparison is also valid for Infinitecoin.

Below are some statistics about the mining performance of various hardware used in a mining rig.

The table shows (mostly) stock clock numbers. 10-20% performance improvement can be achieved with CPU overclocking tools.

Notes:

    kHash/s = total hashing speed of all cores added together

http://litecoin.info/Mining_Hardware_Comparison