Very certain. Intell's spec page, MacRumors, www.xlr8yourmac.com, Apple Discussions, etc. That's the fastest CPU that runs with a 667Mhz bus that the chipset in the Mini can take.
Am still looking into this... Will logitech c920 work with 2.33 GHZ? They say has got to be 2.4 to 2.6, but has anyone experiencing it working fine with 2.33?