Airmont - Microarchitectures - Intel

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	Airmont µarch
	General Info

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Airmont is Intel's 14 nm microarchitecture for the Atom family of system on chips. Introduced in 2015, Airmont is a shrink of Silvermont.

Codenames

Platform	Core	Target
Cherry Trail	Cherry Trail	Smartphones, Tablets
Braswell	Braswell	Tablets, PCs

Architecture

Airmont is for the most part identical to Silvermont with some higher number of execution units to the GPU in some of the higher-end models.

Key changes from Silvermont

DTLB table size doubled (128 entries -> 256 entries)
L2 latency increased
Reorder Buffer was increased (from 32 entries to 48)
Gen 8 GPUs

Block Diagram

Memory Hierarchy

Cache
- Hardware prefetchers
- L1 Cache:
  - 32 KB 8-way set associative instruction, 64 B line size
  - 24 KB 6-way set associative data, 64 B line size
  - Per core
- L2 Cache:
  - 1 MB 16-way set associative, 64 B line size
  - Per 2 cores
- L3 Cache:
  - No level 3 cache
- RAM
  - Maximum of 1GB, 2 GB, and 4 GB
  - dual 32-bit channels, 1 or 2 ranks per channel

Multithreading

Airmont, like Silvermont has no support for Intel Hyper-Threading Technology.

Pipeline

Main article: Silvermont's Pipeline

Airmont's pipeline is identical to Silvermont's.

Cores

Cherry Trail - SoCs for Smartphones/Tablets
Braswell - SoCs for low-end PCs

All Airmont Chips

Airmont Chips
Main processor									IGP
Model	µarch	Platform	Core	Launched	SDP	TDP	Freq	Max Mem	Name	Freq	Max Freq
x5-E8000	Airmont	Braswell	Braswell	8 February 2016		5 W 5,000 mW 0.00671 hp 0.005 kW	1,040 MHz 1.04 GHz 1,040,000 kHz	8,192 MiB 8,388,608 KiB 8,589,934,592 B 8 GiB 0.00781 TiB	HD Graphics (Braswell)	320 MHz 0.32 GHz 320,000 KHz
x5-Z8300	Airmont	Cherry Trail	Cherry Trail	2 March 2015	2 W 2,000 mW 0.00268 hp 0.002 kW		1,440 MHz 1.44 GHz 1,440,000 kHz	2,048 MiB 2,097,152 KiB 2,147,483,648 B 2 GiB 0.00195 TiB	HD Graphics (Cherry Trail)	200 MHz 0.2 GHz 200,000 KHz	500 MHz 0.5 GHz 500,000 KHz
x5-Z8330	Airmont	Cherry Trail	Cherry Trail	8 February 2016	2 W 2,000 mW 0.00268 hp 0.002 kW		1,440 MHz 1.44 GHz 1,440,000 kHz	2,048 MiB 2,097,152 KiB 2,147,483,648 B 2 GiB 0.00195 TiB	HD Graphics 400	200 MHz 0.2 GHz 200,000 KHz	500 MHz 0.5 GHz 500,000 KHz
x5-Z8350	Airmont	Cherry Trail	Cherry Trail	8 February 2016	2 W 2,000 mW 0.00268 hp 0.002 kW		1,440 MHz 1.44 GHz 1,440,000 kHz	2,048 MiB 2,097,152 KiB 2,147,483,648 B 2 GiB 0.00195 TiB	HD Graphics (Cherry Trail)	200 MHz 0.2 GHz 200,000 KHz	500 MHz 0.5 GHz 500,000 KHz
x5-Z8500	Airmont	Cherry Trail	Cherry Trail	2 March 2015	2 W 2,000 mW 0.00268 hp 0.002 kW		1,440 MHz 1.44 GHz 1,440,000 kHz	8,192 MiB 8,388,608 KiB 8,589,934,592 B 8 GiB 0.00781 TiB	HD Graphics (Cherry Trail)	200 MHz 0.2 GHz 200,000 KHz	600 MHz 0.6 GHz 600,000 KHz
x5-Z8550	Airmont	Cherry Trail	Cherry Trail	8 February 2016	2 W 2,000 mW 0.00268 hp 0.002 kW		1,440 MHz 1.44 GHz 1,440,000 kHz	8,192 MiB 8,388,608 KiB 8,589,934,592 B 8 GiB 0.00781 TiB	HD Graphics 400	200 MHz 0.2 GHz 200,000 KHz	600 MHz 0.6 GHz 600,000 KHz
x7-Z8700	Airmont	Cherry Trail	Cherry Trail	2 March 2015	2 W 2,000 mW 0.00268 hp 0.002 kW		1,600 MHz 1.6 GHz 1,600,000 kHz	8,192 MiB 8,388,608 KiB 8,589,934,592 B 8 GiB 0.00781 TiB	HD Graphics (Cherry Trail)	200 MHz 0.2 GHz 200,000 KHz	600 MHz 0.6 GHz 600,000 KHz
x7-Z8750	Airmont	Cherry Trail	Cherry Trail	2 March 2015	2 W 2,000 mW 0.00268 hp 0.002 kW		1,600 MHz 1.6 GHz 1,600,000 kHz	8,192 MiB 8,388,608 KiB 8,589,934,592 B 8 GiB 0.00781 TiB	HD Graphics 405	200 MHz 0.2 GHz 200,000 KHz	600 MHz 0.6 GHz 600,000 KHz
J3060	Airmont		Braswell	15 January 2016		6 W 6,000 mW 0.00805 hp 0.006 kW	1,600 MHz 1.6 GHz 1,600,000 kHz	8,192 MiB 8,388,608 KiB 8,589,934,592 B 8 GiB 0.00781 TiB	HD Graphics 400	320 MHz 0.32 GHz 320,000 KHz	700 MHz 0.7 GHz 700,000 KHz
J3160	Airmont		Braswell	15 January 2016		6 W 6,000 mW 0.00805 hp 0.006 kW	1,600 MHz 1.6 GHz 1,600,000 kHz	8,192 MiB 8,388,608 KiB 8,589,934,592 B 8 GiB 0.00781 TiB	HD Graphics 400	320 MHz 0.32 GHz 320,000 KHz	700 MHz 0.7 GHz 700,000 KHz
N3000	Airmont		Braswell	March 2015	3 W 3,000 mW 0.00402 hp 0.003 kW	4 W 4,000 mW 0.00536 hp 0.004 kW	1,040 MHz 1.04 GHz 1,040,000 kHz	8,192 MiB 8,388,608 KiB 8,589,934,592 B 8 GiB 0.00781 TiB	HD Graphics (Braswell)	320 MHz 0.32 GHz 320,000 KHz	600 MHz 0.6 GHz 600,000 KHz
N3010	Airmont		Braswell	10 January 2016	3 W 3,000 mW 0.00402 hp 0.003 kW	4 W 4,000 mW 0.00536 hp 0.004 kW	1,040 MHz 1.04 GHz 1,040,000 kHz	8,192 MiB 8,388,608 KiB 8,589,934,592 B 8 GiB 0.00781 TiB	HD Graphics 400	320 MHz 0.32 GHz 320,000 KHz	600 MHz 0.6 GHz 600,000 KHz
N3050	Airmont		Braswell	March 2015	4 W 4,000 mW 0.00536 hp 0.004 kW	6 W 6,000 mW 0.00805 hp 0.006 kW	1,600 MHz 1.6 GHz 1,600,000 kHz	8,192 MiB 8,388,608 KiB 8,589,934,592 B 8 GiB 0.00781 TiB	HD Graphics (Braswell)	320 MHz 0.32 GHz 320,000 KHz	600 MHz 0.6 GHz 600,000 KHz
N3060	Airmont		Braswell	15 January 2016	4 W 4,000 mW 0.00536 hp 0.004 kW	6 W 6,000 mW 0.00805 hp 0.006 kW	1,600 MHz 1.6 GHz 1,600,000 kHz	8,192 MiB 8,388,608 KiB 8,589,934,592 B 8 GiB 0.00781 TiB	HD Graphics 400	320 MHz 0.32 GHz 320,000 KHz	600 MHz 0.6 GHz 600,000 KHz
N3150	Airmont		Braswell	March 2015	4 W 4,000 mW 0.00536 hp 0.004 kW	6 W 6,000 mW 0.00805 hp 0.006 kW	1,600 MHz 1.6 GHz 1,600,000 kHz	16,384 MiB 16,777,216 KiB 17,179,869,184 B 16 GiB 0.0156 TiB	HD Graphics (Braswell)	320 MHz 0.32 GHz 320,000 KHz	640 MHz 0.64 GHz 640,000 KHz
N3160	Airmont		Braswell	15 January 2016	3 W 3,000 mW 0.00402 hp 0.003 kW	4 W 4,000 mW 0.00536 hp 0.004 kW	1,600 MHz 1.6 GHz 1,600,000 kHz	8,192 MiB 8,388,608 KiB 8,589,934,592 B 8 GiB 0.00781 TiB	HD Graphics 400	320 MHz 0.32 GHz 320,000 KHz	640 MHz 0.64 GHz 640,000 KHz
J3710	Airmont		Braswell	10 January 2016		6.5 W 6,500 mW 0.00872 hp 0.0065 kW	1,600 MHz 1.6 GHz 1,600,000 kHz	8,192 MiB 8,388,608 KiB 8,589,934,592 B 8 GiB 0.00781 TiB	HD Graphics 405	400 MHz 0.4 GHz 400,000 KHz	740 MHz 0.74 GHz 740,000 KHz
N3700	Airmont		Braswell	March 2015	4 W 4,000 mW 0.00536 hp 0.004 kW	6 W 6,000 mW 0.00805 hp 0.006 kW	1,600 MHz 1.6 GHz 1,600,000 kHz	8,192 MiB 8,388,608 KiB 8,589,934,592 B 8 GiB 0.00781 TiB	HD Graphics (Braswell)	400 MHz 0.4 GHz 400,000 KHz	700 MHz 0.7 GHz 700,000 KHz
N3710	Airmont		Braswell	March 2015	4 W 4,000 mW 0.00536 hp 0.004 kW	6 W 6,000 mW 0.00805 hp 0.006 kW	1,600 MHz 1.6 GHz 1,600,000 kHz	8,192 MiB 8,388,608 KiB 8,589,934,592 B 8 GiB 0.00781 TiB	HD Graphics 405	400 MHz 0.4 GHz 400,000 KHz	700 MHz 0.7 GHz 700,000 KHz

codename	Airmont +
core count	1 +, 2 +, 4 + and 8 +
designer	Intel +
first launched	2015 +
full page name	intel/microarchitectures/airmont +
instance of	microarchitecture +
instruction set architecture	x86-64 +
manufacturer	Intel +
microarchitecture type	CPU +
name	Airmont +
phase-out	2017 +
pipeline stages (max)	14 +
pipeline stages (min)	12 +
process	14 nm (0.014 μm, 1.4e-5 mm) +

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