"All Conroe processors are manufactured with 4 MB L2 cache; however, due to manufacturing defects or possibly for marketing purposes, the E6300 and E6400 versions based on this core have half their cache disabled, leaving them with only 2 MB of usable L2 cache. These Conroe-based E6300 and E6400 CPUs have the B2 stepping."
Edit: Hov? Slået af Polarfar 😉
Sorry for OT!