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A4-9120C - AMD
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Revision as of 18:51, 7 January 2019 by David (talk | contribs)

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General Info
Microarchitecture

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]

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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]

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Integrated Memory Controller
Max TypeDDR4-1866
Supports ECCNo
Controllers1
Channels1
Max Bandwidth13.91 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

[Edit/Modify Expansions Info]

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Expansion Options
PCIeRevision: 3.0
Max Lanes: 8
Configuration: 1x8
Facts about "A4-9120C - AMD"
Has subobject
"Has subobject" is a predefined property representing a container construct and is provided by Semantic MediaWiki.
A4-9120C - AMD#pcie +
full page nameamd/a4/a4-9120c +
has ecc memory supportfalse +
instance ofmicroprocessor +
l1$ size160 KiB (163,840 B, 0.156 MiB) +
l1d$ size64 KiB (65,536 B, 0.0625 MiB) +
l1i$ size96 KiB (98,304 B, 0.0938 MiB) +
l2$ size1 MiB (1,024 KiB, 1,048,576 B, 9.765625e-4 GiB) +
ldate1900 +
max memory bandwidth13.91 GiB/s (14,243.84 MiB/s, 14.936 GB/s, 14,935.749 MB/s, 0.0136 TiB/s, 0.0149 TB/s) +
max memory channels1 +
supported memory typeDDR4-1866 +