AMD Athlon II X4 638: specs and benchmarks
AMD started Athlon II X4 638 sales on February 2012. This is Llano architecture desktop processor primarily aimed at office systems. It has 4 cores and 4 threads, and is based on 32 nm manufacturing technology, with a maximum frequency of 2.7 GHz and a locked multiplier.
Compatibility-wise, this is an AMD Socket FM1 processor with a TDP of 65 Watt. It supports DDR3 memory.
It provides poor benchmark performance at 10.06 percent of a leader's which is AMD Ryzen 9 3900X.