To get a good gauge of the processor's integer and floating-point performance prowess, our first order of testing began with SPEC CPU2000. The Phenom II processors manage this decently and far cry from original Phenom processors which we rather forget they ever existed. In the single-threaded peak speed tests, the new Phenom II X4 955 Black Edition CPU managed 9 to 11% performance increments over the Phenom II X4 940 running on the previous AM2+ platform. That's a nice speed bump. With regards to the competition, the Phenom II X4 955 was in close proximity of the Core i7-920 and that of the Core 2 Quad 9550 processors in the integer tests, but was bumped out of the same performance rank in the floating-point test.