You can see quite well that the new Athlon C-models are definitely able to benefit from the higher Front Side Bus speed of 133 MHz: E.g. an Athlon-C 1000 scores as well as a standard model at 1100 MHz.

SPECviewperf 6.1.2: Design Review

Design Review is even more sensitive to CPU bandwidth. The Athlon-C 1000 is even faster than an 1100 MHz model at 1200 MHz core speed. People with high demands to OpenGL applications should definitely go for one of those new CPUs.