TPU reports AMD's A8-3850 APU suffers from a BIOS glitch that allows the user to set higher BClk multiplier values than the chip can respond to. Setting it above the factory default will not increase actual clock speed, even though tools like CPU-Z will report the false clockspeed.
Setting it above the factory default will increase clock speed (at least the clock speed that's reported to you), but that "increased" clock speed will not translate to any performance improvements at all.
This means that the multiplier is ineffective in driving the clock above its maximum default value. So the next time you see screenshots screaming something like "6.00 GHz" on air with the base clock at its default 100 MHz, don't be fooled, trust only those overclocking feats in which the multiplier is set at the maximum default (29.0x) or lesser, and in which the overclocker has increased the base clock among other things.