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General Info

Microarchitecture

APM883208-X2 is a 64-bit 32-core ARM server microprocessor designed by AppliedMicro and announced in 2016. Fabricated on TSMC's 16 nm process based on the Skylark microarchitecture, this processor features 32 custom ARMv8 cores operating at up to 3 GHz with a TDP of 125 W. This chip supports up to 1 TiB of octa-channel DDR4-2666 memory.

This processor was only sampled and never made it to general availability. Ths IP was eventually sold to Ampere Computing which re-introduced the chip under the eMAG 8180 name.

Cache

Main article: Skylark § 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$ 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 USB Revision: 2.0 Max Ports: 2 SATA Revision: 3 Max Ports: 4

Features

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