I have 10x FX Vishera and I have very good batch of FX-8350s (8200+ MHz 1.95V), those two can get to 5 GHz stable and 5270 MHz for benchmarks as Cinebench. The ebst can get around 5050 Mhz stable.
I got one binned FX-9590 from Austin. This chipo can get 5100+ MHz stable, so I dont believe for 5200 MHz stable chip. Maybe with ultraluck.
Who knows me, knows me ;)....AMD 3000+, AMD x2 4600+ EE, AMD X4 955 BE C2,2x AMD X4 965 BE C3, AMD X4 970 BE C3, AMD x4 975 BE, AMD x4 980 BE, AMD X6 1090T BE, AMD x6 1100T BE, 2x AMD FX-8120, 2x AMD FX-8150, FX-6300, FX-8300, FX-8320E, FX-8320, FX-8350, FX-8370, FX-8370E, FX-9370, FX-9590, AMD A8-3850, AMD A8-3870K, A8-5600K, A10-5800K, A10-6800K, A10-7850K, A10-7870K, A 5150, Athlon x4 860K, Intel i7-5960X, i7-6700K, Intel i7-4770K, Intel i7-980x, Intel i7 2600k, Intel i7-3770K, i7-3930K.