AMD FX-6300 review | Processors Reviews | TechRadar:

"Last month saw AMD finally unleash the latest update to its Bulldozer CPU technology, codenamed Piledriver.
The first chip we had in the labs was, somewhat inevitably, the top-spec, eight-core AMD FX-8350. And well received it was too. But by virtue of only being a little cheaper than the excellent Intel i5-3570K, it was almost pricing itself out of the market.
The one that we've been interested in getting our techy mitts on is this six-core FX-6300. It's almost the perfect sweet spot for budget gaming CPUs.
The original FX-6200 impressed us recently with its combination of bargain price, impressive multi-threading performance and serious overclocking chops too. In fact, you could push it up to almost the same CPU performance as quad-core king, the i5-3570K."

AMD FX-4300 review | Processors Reviews | TechRadar:

"The last few months have left me with a rather positive feeling towards AMD. It's the plucky little upstart, which is trying to maintain some competitiveness against the might of Intel, and with the Piledriver update to its CPU lineup we're seeing some decent little budget chips.
The FX-4300, though, is really testing that goodwill because I'm struggling to figure out what the point of it is.
The original Bulldozer FX-4170 had the same dual-module, quad-core make-up and ran at an industry-leading 4.2GHz straight out of the box. I was also able to push it up to about 5GHz with some fairly rudimentary overclocking."