The AMD A6-9220C is an entry-level chip from the Stoney-Ridge APU series for Chromebooks (7th APU generation from 2016), which was announced early 2019. Compared to the A6-9220, the 9220C is rated at a reduced TDP of 6 versus 15 Watt and also reduced clock speeds. It integrates two CPU cores (one Excavator module with 2 integer and on FP unit) clocked between 1.8 - 2.7 GHz (versus 2.5 - 2.9 GHz on the A6-9220).
Stoney Ridge is the successor of the Carrizo architecture and the design is almost identical. Thanks to optimized manufacturing processes and more aggressive Boost behavior, however, the clocks are a bit higher at the same power consumption. The memory controller now also supports DDR4-RAM, in this case up to 2133 MHz. Stoney Ridge is the designation for the smaller dual-core and single-core chip, while Bristol Ridge is the bigger quad-core chip with dual-channel memory controller. More technical details are available in the following articles:
Because of the significantly lower clock speed, the A6-9220C should be noticeably slower than the old A6-9220. AMD compares the performance against the Pentium N4200 in ChromeOS and sees the A6-9220C clearly ahead. The efficiency should be worse however, due to the old manufacturing process.
The integrated Radeon R4 (Stoney Ridge) GPU is a bit controversal, as AMD states 3 compute cores which should translate to 192 shaders.
AMD specifies the TDP of the A6-9220C with 6 Watts which should enable thin and light (even fanless) Chromebooks.
|Series||AMD Bristol Ridge|
|Series: Bristol Ridge Stoney Ridge|
|Clock Rate||1800 - 2700 MHz|
|Level 1 Cache||160 KB|
|Level 2 Cache||1 MB|
|Number of Cores / Threads||2 / 2|
|Power Consumption (TDP = Thermal Design Power)||6 Watt|
|Transistor Count||1200 Million|
|Manufacturing Technology||28 nm|
|Die Size||124.5 mm2|
|Max. Temperature||90 °C|
|Features||Single-Channel DDR4-2133, Virtualization,|
|GPU||AMD Radeon R5 (Stoney Ridge) ( - 720 MHz)|
|64 Bit||64 Bit support|
- Average benchmark values for this graphics card
* Smaller numbers mean a higher performance
Reviews for the AMD Bristol Ridge A6-9220C processor
Lenovo 14w (no touch) (AMD Radeon R5 (Stoney Ridge), 14.00")
» Lenovo 14w (no touch) - External Review