The two models - Opteron 2373 EE (2.1GHz) and Opteron 2377 EE (2.3GHz). - are designed to work in datacentres where chip density and energy efficiency are considered to be primary criteria. Designed to fit into dual-socket motherboards, the new chips are based on AMD's Shanghai server architecture and ship with 6MB of L3 cache.
AMD's not divulged the pricing of the new energy-efficient chips, but we can guesstimate it from the $450 list value of the Opteron 2379 HE (2.4GHz, 55W ACP).
The new Opteron EE range complements the newly-introduced line-up that includes a bunch of HE (High Efficiency) models with a 55W ACP, standard chips with a 75W ACP, and Opteron SE with a 105W ACP.
Now, where's my 40W desktop Phenom II?