AMD is true: the Sempron is faster in the two benchmarks they used (Winstone and SYSmark). But we have just carried out a more comprehensive testing session, which says that the Celeron D is often better than the Sempron in real-life tasks. We found our own “performance ratings” of the processors by calculating the average of the processor’s relative speeds in the 27 benchmarks we used. The results are normalized to those of the Intel Celeron 2.8: