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A4-9120C
General Info
Designer	AMD
Manufacturer	GlobalFoundries
Model Number	A4-9120C
Part Number	AM912CANN23AC
Market	Mobile
Introduction	January 6, 2019 (announced) January 6, 2019 (launched)
Shop	Amazon
General Specs
Family	A4
Series	A4-9000
Locked	Yes
Frequency	1,600 MHz
Turbo Frequency	2,400 MHz (1 core)
Clock multiplier	16
Microarchitecture
ISA	x86-64 (x86)
Microarchitecture	Excavator
Core Name	Stoney Ridge
Process	28 nm
Technology	CMOS
Word Size	64 bit
Cores	2
Threads	2
Multiprocessing
Max SMP	1-Way (Uniprocessor)
Electrical
TDP	6 W
OP Temperature	0° C – 90 °C
Packaging
Package	BGA-968, FP4
Package Type	Organic Micro Ball Grid Array
Dimension	37 mm × 29 mm
Pitch	0.8 mm
Contacts	968

A4-9120C is a 64-bit dual-core ultra-low power x86 mobile microprocessor introduced by AMD in early 2019. This processor is based on AMD's Excavator microarchitecture and is fabricated on a 28 nm process. The A4-9120C operates at a base frequency of 1.6 GHz with a TDP of 6 W and a turbo frequency of 2.4 GHz. This APU supports single-channel DDR4-1866 memory and incorporates Radeon R4 series graphics operating at up to 600 MHz.

Cache

Main article: Excavator § Cache

[Edit/Modify Cache Info]

Cache Organization Cache is a hardware component containing a relatively small and extremely fast memory designed to speed up the performance of a CPU by preparing ahead of time the data it needs to read from a relatively slower medium such as main memory. The organization and amount of cache can have a large impact on the performance, power consumption, die size, and consequently cost of the IC. Cache is specified by its size, number of sets, associativity, block size, sub-block size, and fetch and write-back policies. Note: All units are in kibibytes and mebibytes.

L1$ 160 KiB 163,840 B 0.156 MiB L1I$ 96 KiB 98,304 B 0.0938 MiB 1x96 KiB     L1D$ 64 KiB 65,536 B 0.0625 MiB 2x32 KiB     L2$ 1 MiB 1,024 KiB 1,048,576 B 9.765625e-4 GiB     2x1 MiB

Memory controller

[Edit/Modify Memory Info]

	Integrated Memory Controller
	Max Type DDR4-1866 Supports ECC No Controllers 1 Channels 1 Max Bandwidth 13.91 GiB/s 14,243.84 MiB/s 14.936 GB/s 14,935.749 MB/s 0.0136 TiB/s 0.0149 TB/s Bandwidth Single 13.91 GiB/s

Expansions

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	Expansion Options
PCIe Revision: 3.0 Max Lanes: 8 Configuration: 1x8

Graphics

[Edit/Modify IGP Info]

	Integrated Graphics Information
	GPU Radeon R4 Series Designer AMD Execution Units 3 Unified Shaders 192 Burst Frequency 600 MHz 0.6 GHz 600,000 KHz Output DP, HDMI

Features

[Edit/Modify Supported Features]

Supported x86 Extensions & Processor Features

MMX MMX Extension EMMX Extended MMX Extension SSE Streaming SIMD Extensions SSE2 Streaming SIMD Extensions 2 SSE3 Streaming SIMD Extensions 3 SSSE3 Supplemental SSE3 SSE4.1 Streaming SIMD Extensions 4.1 SSE4.2 Streaming SIMD Extensions 4.2 SSE4a Streaming SIMD Extensions 4a AVX Advanced Vector Extensions AVX2 Advanced Vector Extensions 2 ABM Advanced Bit Manipulation TBM Trailing Bit Manipulation BMI1 Bit Manipulation Instruction Set 1 BMI2 Bit Manipulation Instruction Set 2 FMA3 3-Operand Fused-Multiply-Add AES AES Encryption Instructions RdRand Hardware RNG XOP eXtended Operations Extension CLMUL Carry-less Multiplication Extension F16C 16-bit Floating Point Conversion x86-16 16-bit x86 x86-32 32-bit x86 x86-64 64-bit x86 Real Real Mode Protected Protected Mode SMM System Management Mode FPU Integrated x87 FPU NX No-eXecute AMD-Vi AMD-Vi (I/O MMU virtualization) AMD-V AMD Virtualization