Killer Trinity - top A10-5800k - confirmed 5.1GHz on air and 7.3GHz on LN2

[superpyton]

There is an internal Pll inside the FCH which can be used to generate the BCLK frequency. The high-end FM2 motherboards have an external Pll which is usually used instead. While the internal Pll is "ok", it is has more limited adjustments and features than the external Plls and it is not as accurate.
The internal Pll can generate "exact" (.0MHz) frequencies with 4MHz intervals only, while the external Plls are always 100% precise.

Gigabyte F2A85X-UP4 uses the internal Pll for BCLK frequencies below 136MHz and the external one for anything beyond that.

Asus boards never use the internal Pll.

And how about ASRock and MSI FM2 boards?

[The Stilt]

And how about ASRock and MSI FM2 boards?

Asrock FM2A75 Pro4-M is pretty close to Asus F2A85-M Pro, however the production version is lacking the external Pll.
MSI FM2-A75MA-E35 has an external Pll, however the VRM is only 3+2 phase without any cooling.