AMD Athlon X4 840: specs and benchmarks
AMD started AMD Athlon X4 840 sales on August 2014. This is Kaveri architecture desktop processor primarily aimed at office systems. It has 4 cores and 4 threads, and is based on 28 nm manufacturing technology, with a maximum frequency of 3800 MHz and a locked multiplier.
Compatibility-wise, this is Socket FM2+ processor with a TDP of 65 watt.
It provides poor benchmark performance at 3.68 percent of a leader's which is AMD Ryzen Threadripper PRO 3995WX.