The first AMD FX-series CPUs based on the Piledriver architecture launched back in October and now it appears that a refresh is coming, as two parts out of four rumored SKUs, have appeared for pre-order in the USA.

As you already know, back in October, AMD launched the FX-8320 and FX-8350 125W TDP parts as well as the FX-4300 and the FX-6300 95W TDP parts. Leaked slides and rumors suggested that AMD would launch a couple of more SKUs, including FX-4320, FX-4350, FX-6350 and the FX-8300 by the end of Q4 2012. The first two, FX-4350 and the FX-6350 have appeared for pre-order at shopblt.com, a US e-tail site.

The FX-4350 is a quad-core SKU with 8MB of L3 cache, a 125W TDP and works at 4.2GHz base and 4.3GHz Turbo clock. The FX-6350 is a six-core part that has same 8MB of L3 cache, same 125W TDP and works at 3.9GHz base and 4.2GHz Turbo clock.

According to these leaked pre-order prices, the FX-4350 is listed at US $142.68, or US $9 more than the FX-4300 in the same store. The FX-6350 is priced at US $154.57, which is US $10 more expensive than the FX-6300 in the same store.

You can check out more over at CPU-World.com.