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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 (compare)3100 - 3700 MHz2 / 2
AMD A9-9420e (compare) - 2500? MHz2 / 2
AMD A9-9420 (compare)3000 - 3600 MHz2 / 2
AMD A9-9410 (compare)2900 - 3500 MHz2 / 2
AMD A6-9225 (compare)2600 - 3000 MHz2 / 2
AMD A6-9220 (compare)2500 - 2900 MHz2 / 2
AMD A6-9220C (compare)1800 - 2700 MHz2 / 2
AMD A6-9210 (compare)2400 - 2800 MHz2 / 2
AMD A4-9120 (compare)2200 - 2500 MHz2 / 2
» AMD A4-9120C1600 - 2400 MHz2 / 2
AMD E2-9010 (compare)2000 - 2200 MHz2 / 2
AMD E2-9000 (compare)1800 - 2200 MHz2 / 2
Clock Rate1600 - 2400 MHz
Level 1 Cache160 KB
Level 2 Cache1 MB
Number of Cores / Threads2 / 2
Max. 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
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 315 CB315-2HT (AMD Radeon R4 (Stoney Ridge), 15.6")
» Acer Chromebook 315 CB315-2HT - External Review

HP Chromebook 11A G6 EE-6HL33EA (AMD Radeon R4 (Stoney Ridge), 11.6")
» HP Chromebook 11A G6 EE-6HL33EA - External Review

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

» 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 AMD Bristol Ridge

» AMD Bristol Ridge FX-9830P
   3 GHz / 2 MB L2
» AMD Bristol Ridge PRO A12-9830B
   3 GHz / 2 MB L2
» AMD Bristol Ridge FX-9800P
   2.7 GHz / 2 MB L2
» AMD Bristol Ridge PRO A12-9800B
   2.7 GHz / 2 MB L2
» AMD Bristol Ridge A12-9720P
   2.7 GHz / 2 MB L2
» AMD Bristol Ridge A12-9700P
   2.5 GHz / 2 MB L2
» AMD Bristol Ridge A10-9620P
   2.5 GHz / 2 MB L2
» AMD Bristol Ridge A10-9600P
   2.4 GHz / 2 MB L2
» AMD Bristol Ridge A8-9600B
   2.4 GHz / 2 MB L2
» AMD Bristol Ridge A9-9425
   3.1 GHz / 1 MB L2
» AMD Bristol Ridge A9-9420
   3 GHz / 1 MB L2
» AMD Bristol Ridge A9-9410
   2.9 GHz / 1 MB L2
» AMD Bristol Ridge A6-9225
   2.6 GHz / 1 MB L2
» AMD Bristol Ridge A6-9220
   2.5 GHz / 1 MB L2
» AMD Bristol Ridge A6-9220C
   1.8 GHz / 1 MB L2
» AMD Bristol Ridge A4-9120
   2.2 GHz / 1 MB L2
» AMD Bristol Ridge A4-9120C
   1.6 GHz / 1 MB L2
» AMD Bristol Ridge E2-9010
   2 GHz / 1 MB L2
» AMD Bristol Ridge E2-9000
   1.8 GHz / 1 MB L2

Surrounding CPUs

- Intel Celeron J1900
   2 GHz / 2 MB
- Apple A9
   1.8 GHz / 0 MB
- Intel Atom x7 Z8700
   1.6 GHz / 2 MB
- Intel Celeron N4000
   1.1 GHz / 4 MB
- AMD Bristol Ridge A4-9120
   2.2 GHz / 1 MB
» AMD Bristol Ridge A4-9120C
   1.6 GHz / 1 MB L2
+ Intel Core i3 4010Y
   1.3 GHz / 512 KB + 3072 KB
+ AMD Bristol Ridge E2-9010
   2 GHz / 1024 KB
+ AMD E-Series E2-7110
   1.8 GHz / 2048 KB
+ AMD A-Series A4-6210
   1.8 GHz / 2048 KB
+ AMD Carrizo A6-8500P
   1.6 GHz / 1024 KB
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> Notebook / Laptop Reviews and News > Benchmarks / Tech > Notebook Processors > AMD A4-9120C Processors
Klaus Hinum (Update: 2019-01- 6)