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A1
General Info
Designer	Ampere Computing
Manufacturer	TSMC
Model Number	A1
Market	Server
Introduction	February 5, 2018 (announced)
Release Price	$950
General Specs
Turbo Frequency	3,300 MHz
Microarchitecture
ISA	ARMv8 (ARM)
Process	16 nm
Technology	CMOS
Word Size	64 bit
Cores	32
Threads	32
Max Memory	1 TiB
Multiprocessing
Max SMP	1-Way (Uniprocessor)
Electrical
Vcore	0.85 V
VI/O	1.8, 3.3
TDP	125 W
Tjunction	0 °C – 90 °C
Packaging
Package FCBGA-3211 (BGA) Dimension 50 mm x 50 mm Contacts 3,211

A1 is a 64-bit 32-core ARM server microprocessor introduced by Ampere in 2018. Fabricated on TSMC's 16FF+, this processor operates at ? with a turbo frequency of up to 3.3 GHz and 125 W TDP. This processor supports up to 8 channels of DDR4-2666 ECC memory.

Preliminary Data! Information presented in this article deal with a microprocessor or chip that was recently announced or leaked, thus missing information regarding its features and exact specification. Information may be incomplete and can change by final release.

Cache

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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$ 2 MiB 2,048 KiB 2,097,152 B L1I$ 1 MiB 1,024 KiB 1,048,576 B 32x32 KiB     L1D$ 1 MiB 1,024 KiB 1,048,576 B 32x32 KiB   write-through L2$ 4 MiB 4,096 KiB 4,194,304 B 0.00391 GiB     16x256 KiB     L3$ 32 MiB 32,768 KiB 33,554,432 B 0.0313 GiB     1x32 MiB

Memory controller

[Edit/Modify Memory Info]

	Integrated Memory Controller
	Max Type DDR4-2666, DDR4-2400 Supports ECC Yes Max Mem 1 TiB Controllers 8 Channels 8 Max Bandwidth 158.95 GiB/s 162,764.8 MiB/s 170.671 GB/s 170,671.263 MB/s 0.155 TiB/s 0.171 TB/s Bandwidth Single 19.89 GiB/s Double 39.72 GiB/s Quad 79.47 GiB/s Hexa 119.21 GiB/s Octa 158.95 GiB/s

Expansions

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	Expansion Options
PCIe Revision: 3.0 Max Lanes: 42 Configuration: x16, x8, x4

Features

[Edit/Modify Supported Features]

	Supported ARM Extensions & Processor Features
	NEON Advanced SIMD extension TrustZone TrustZone Security Extensions Crypto Cryptographic Extension FP Floating-point Extension