Those figures make sense as a rough ballpark -- max FLOPS estimates including impacts from FMA and whatnot roughly correspond to the throughput we would expect

Those figures make sense as a rough ballpark -- max FLOPS estimates including impacts from FMA and whatnot roughly correspond to the throughput we would expect for a compute-bound linear algebra problem, and current top of the line consumer grade GPUs are 15-30x better in that metric than equivalent CPUs.