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AMD A4-9120C

AMD A4-9120C

The AMD A4-9120C is an entry-level chip from the Stoney-Ridge APU series for Chromebooks and entry level laptops (7th APU generation from 2016), which was announced early 2019. It is based on the similar named A4-9120 from 2016 but with a reduced TDP (6 versus 15 Watt) and reduced clock speeds of 1.6 - 2.4 GHz (compared to 2.2 - 2.5 GHz). Both CPUs integrate two CPU cores (one Excavator module with 2 integer and on FP unit).

It also includes a Radeon R4 GPU with 192 shaders at 600 MHz, as well as a single-channel DDR4-2133 memory controller, H.265 video engine and chipset with all I/O ports.

Architecture

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:

Performance

Because of the significantly lower clock speed, the A4-9120C should be noticeably slower than the old A4-9120. AMD compares the A4-9120C with the Celeron N3350 in ChromeOS and sees a significant performance advantage for the A4. The efficiency however should be clearly worse as the A4-9120C is still manufactured in 28nm.

Power Consumption

AMD specifies the TDP of the A4-9120C with 6 Watts which should enable thin and light Chromebooks (even fanless).

SeriesAMD Bristol Ridge
CodenameStoney Ridge
Series: Bristol Ridge Stoney Ridge
AMD A9-9425 compare3.1 - 3.7 GHz2 / 2
AMD A9-9420e compare0 - 2.5 GHz2 / 2
AMD A9-9420 compare3 - 3.6 GHz2 / 2
AMD A9-9410 compare2.9 - 3.5 GHz2 / 2
AMD A6-9225 compare2.6 - 3.1 GHz2 / 2
AMD A6-9220 compare2.5 - 2.9 GHz2 / 2
AMD A6-9220C compare1.8 - 2.7 GHz2 / 2
AMD A6-9210 compare2.4 - 2.8 GHz2 / 2
AMD A4-9120 compare2.2 - 2.5 GHz2 / 2
» AMD A4-9120C1.6 - 2.4 GHz2 / 2
AMD E2-9010 compare2 - 2.2 GHz2 / 2
AMD E2-9000 compare1.8 - 2.2 GHz2 / 2
AMD A6-9220e compare1.6 - 2.4 GHz2 / 2
Clock Rate1600 - 2400 MHz
Level 1 Cache160 KB
Level 2 Cache1 MB
Number of Cores / Threads2 / 2
Power Consumption (TDP = Thermal Design Power)6 Watt
Transistor Count1200 Million
Manufacturing Technology28 nm
Die Size124.5 mm2
SocketBGA
FeaturesSingle-Channel DDR4-2133, Virtualization,
GPUAMD Radeon R4 (Stoney Ridge) ( - 600 MHz)
64 Bit64 Bit support
Architecturex86
Announcement Date01/06/2019

Benchmarks

- Range of benchmark values for this graphics card
- Average benchmark values for this graphics card
* Smaller numbers mean a higher performance

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Reviews for the AMD Bristol Ridge A4-9120C processor

Acer Chromebook 15 CB315-2H-4451 (AMD Radeon R4 (Stoney Ridge), 15.60")
» Acer Chromebook 15 CB315-2H-4451 - External Review

Acer Chromebook 315 CB315-2HT (AMD Radeon R4 (Stoney Ridge), 15.60")
» Acer Chromebook 315 CB315-2HT - External Review

Acer Chromebook CB315-2HT-47WG (AMD Radeon R4 (Stoney Ridge), 15.60")
» Acer Chromebook CB315-2HT-47WG - External Review

Acer Chromebook Spin 311 R721T-482Z (AMD Radeon R4 (Stoney Ridge), 11.60")
» Acer Chromebook Spin 311 R721T-482Z - External Review

Acer TravelMate B114-21-42BG (AMD Radeon R4 (Stoney Ridge), 14.00")
» Acer TravelMate B114-21-42BG - External Review

HP Chromebook 11A G6 EE-6HL33EA (AMD Radeon R4 (Stoney Ridge), 11.60")
» HP Chromebook 11A G6 EE-6HL33EA - External Review

HP Chromebook 14-db0020nr (AMD Radeon R4 (Stoney Ridge), 14.00")
» HP Chromebook 14-db0020nr - External Review

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» Mobile CPU Comparison
Comparison of all mobile CPU series

» Mobile Processors - Benchmarklist
Benchmarklist of all known CPUs that are used in laptops (desktop and laptop CPUs)

Other CPUs of the series Bristol Ridge

» AMD FX-9830P
   4x 3 GHz - 3.7 GHz
» AMD PRO A12-9830B
   4x 3 GHz - 3.7 GHz
» AMD FX-9800P
   4x 2.7 GHz - 3.6 GHz
» AMD PRO A12-9800B
   4x 2.7 GHz - 3.6 GHz
» AMD A12-9720P
   4x 2.7 GHz - 3.6 GHz
» AMD A12-9700P
   4x 2.5 GHz - 3.4 GHz
» AMD A10-9620P
   4x 2.5 GHz - 3.4 GHz
» AMD A10-9600P
   4x 2.4 GHz - 3.3 GHz
» AMD PRO A8-9600B
   4x 2.4 GHz - 3.3 GHz
» AMD A9-9425
   2x 3.1 GHz - 3.7 GHz
» AMD A9-9420e
   2x - 2.5 GHz
» AMD A9-9420
   2x 3 GHz - 3.6 GHz
» AMD A9-9410
   2x 2.9 GHz - 3.5 GHz
» AMD A6-9225
   2x 2.6 GHz - 3.1 GHz
» AMD A6-9220
   2x 2.5 GHz - 2.9 GHz
» AMD A6-9220C
   2x 1.8 GHz - 2.7 GHz
» AMD A6-9210
   2x 2.4 GHz - 2.8 GHz
» AMD A4-9120
   2x 2.2 GHz - 2.5 GHz
» AMD A4-9120C
   2x 1.6 GHz - 2.4 GHz
» AMD E2-9010
   2x 2 GHz - 2.2 GHz
» AMD E2-9000
   2x 1.8 GHz - 2.2 GHz
» AMD A6-9220e
   2x 1.6 GHz - 2.4 GHz

Surrounding CPUs

+ Intel Pentium J2850
   4x 2.4 GHz
+ Intel Pentium N3520
   4x 2.17 GHz - 2.42 GHz
+ Intel Celeron J1900
   4x 2 GHz - 2.42 GHz
+ Intel Atom x7-Z8700
   4x 1.6 GHz - 2.4 GHz
+ AMD A4-9120
   2x 2.2 GHz - 2.5 GHz
» AMD A4-9120C
   2x 1.6 GHz - 2.4 GHz
- Intel Core i3-4010Y
   2x 1.3 GHz
- AMD E2-9010
   2x 2 GHz - 2.2 GHz
- AMD E2-7110
   4x 1.8 GHz
- AMD A4-6210
   4x 1.8 GHz
- AMD A6-8500P
   2x 1.6 GHz - 3 GHz
> Notebook / Laptop Reviews and News > Benchmarks / Tech > Notebook Processors > AMD A4-9120C Processors
Klaus Hinum (Update: 2019-01- 6)