Intel Atom
Intel Atom (2015 logo)
Developer	Intel
Manufacturer	Intel
Type	system on chips, microprocessors
Introduction	March 2, 2008 (announced) April 2, 2008 (launch)
ISA	IA-32, x86-64
µarch	Bonnell
Word size	32 32 bit 4 octets 8 nibbles , 64 64 bit 8 octets 16 nibbles
Process	45 nm 0.045 μm 4.5e-5 mm , 32 nm 0.032 μm 3.2e-5 mm , 22 nm 0.022 μm 2.2e-5 mm , 14 nm 0.014 μm 1.4e-5 mm
Technology	CMOS
Clock	500 MHz-2400 MHz
Package	FCBGA-437, PBGA-441
Socket	BGA

Atom is an family of ultra-low-voltage 32 and 64-bit microprocessors and system on chips designed by Intel since 2008.

Models

Bonnell

Main article: Bonnel Microarchitecture

Bonnell was the first microarchitecture designed specifically for the ultra-low power microprocessor market. Introduced in 2008, it featured fully x86-compatible cores with a TDP of only 500 mW to 2 W, less than any other x86 processor available that the time. All Bonnell-based processors were manufactured on Intel's 45 nm process.

Silverthorne Core

Main article: Silverthorne Core

The first series of Bonnell processors were introduced during the 2008 Intel Developer Forum (IDF) in Shanghai, China. Those 32-bit processors were based on the the Silverthorne core which were designed for the Mobile Internet Devices (MID) market. Silverthorne processors have 56 KiB of L1$ and 512 KiB of L2. Silverthorne has support for the traditional AGTL+-based FSB as well as a new low power CMOS FSB specifically introduced to reduce power.

Silverthorne chips consist of 47 million transistors on a 24.2 mm² die packaged in a tiny 13mm x 14mm FCBGA-437 and larger PBGA-441 packages. All processors are a single core. Additionally all models support every x86 extension up to SSSE3 (SMM, FPU, NX, MMX, SSE, SSE2, SSE3, SSSE3).

	List of Silverthorne-based Atom Processors
	Main processor								Bus		Features
Model	Price	Process	Launched	C	T	Freq	TDP	SDP	Speed	Rate	HT	VT-x
Z500	$ 45.00 € 40.50 £ 36.45 ¥ 4,649.85	45 nm 0.045 μm 4.5e-5 mm	2 April 2008	1	2	0.8 GHz 800 MHz 800,000 kHz	650 mW 0.65 W 8.7165e-4 hp 6.5e-4 kW	960 mW 0.96 W 0.00129 hp 9.6e-4 kW	100 MHz 0.1 GHz 100,000 kHz	400 MT/s 0.4 GT/s 400,000 kT/s	✔	✘
Z510	$ 45.00 € 40.50 £ 36.45 ¥ 4,649.85	45 nm 0.045 μm 4.5e-5 mm	2 April 2008	1	1	1.1 GHz 1,100 MHz 1,100,000 kHz	2,000 mW 2 W 0.00268 hp 0.002 kW	960 mW 0.96 W 0.00129 hp 9.6e-4 kW	100 MHz 0.1 GHz 100,000 kHz	400 MT/s 0.4 GT/s 400,000 kT/s	✘	✘
Z510P		45 nm 0.045 μm 4.5e-5 mm	2 March 2009	1	2	1.1 GHz 1,100 MHz 1,100,000 kHz	2,000 mW 2 W 0.00268 hp 0.002 kW		100 MHz 0.1 GHz 100,000 kHz	400 MT/s 0.4 GT/s 400,000 kT/s	✔	✘
Z510PT		45 nm 0.045 μm 4.5e-5 mm	2 March 2009	1	2	1.1 GHz 1,100 MHz 1,100,000 kHz	2,000 mW 2 W 0.00268 hp 0.002 kW		100 MHz 0.1 GHz 100,000 kHz	400 MT/s 0.4 GT/s 400,000 kT/s	✔	✘
Z515		45 nm 0.045 μm 4.5e-5 mm	8 April 2009	1	2	1.2 GHz 1,200 MHz 1,200,000 kHz	650 mW 0.65 W 8.7165e-4 hp 6.5e-4 kW		100 MHz 0.1 GHz 100,000 kHz	400 MT/s 0.4 GT/s 400,000 kT/s	✔	✘
Z520	$ 65.00 € 58.50 £ 52.65 ¥ 6,716.45	45 nm 0.045 μm 4.5e-5 mm	2 April 2008	1	2	1.333 GHz 1,333.33 MHz 1,333,330 kHz	2,000 mW 2 W 0.00268 hp 0.002 kW	960 mW 0.96 W 0.00129 hp 9.6e-4 kW	133.33 MHz 0.133 GHz 133,330 kHz	533.33 MT/s 0.533 GT/s 533,330 kT/s	✔	✔
Z520PT		45 nm 0.045 μm 4.5e-5 mm	2 March 2009	1	2	1.333 GHz 1,333.33 MHz 1,333,330 kHz	2,000 mW 2 W 0.00268 hp 0.002 kW		133.33 MHz 0.133 GHz 133,330 kHz	533.33 MT/s 0.533 GT/s 533,330 kT/s	✔	✘
Z530	$ 95.00 € 85.50 £ 76.95 ¥ 9,816.35	45 nm 0.045 μm 4.5e-5 mm	2 April 2008	1	2	1.6 GHz 1,599.99 MHz 1,599,990 kHz	2,200 mW 2.2 W 0.00295 hp 0.0022 kW		133.33 MHz 0.133 GHz 133,330 kHz	533.33 MT/s 0.533 GT/s 533,330 kT/s	✔	✔
Z530P		45 nm 0.045 μm 4.5e-5 mm	2 March 2009	1	2	1.6 GHz 1,599.99 MHz 1,599,990 kHz	2,000 mW 2 W 0.00268 hp 0.002 kW		133.33 MHz 0.133 GHz 133,330 kHz	533.33 MT/s 0.533 GT/s 533,330 kT/s	✔	✔
Z540	$ 160.00 € 144.00 £ 129.60 ¥ 16,532.80	45 nm 0.045 μm 4.5e-5 mm	2 April 2008	1	2	1.867 GHz 1,866.66 MHz 1,866,660 kHz	2,400 mW 2.4 W 0.00322 hp 0.0024 kW	960 mW 0.96 W 0.00129 hp 9.6e-4 kW	133.33 MHz 0.133 GHz 133,330 kHz	533.33 MT/s 0.533 GT/s 533,330 kT/s	✔	✔
Z550		45 nm 0.045 μm 4.5e-5 mm	8 April 2009	1	2	2 GHz 1,999.99 MHz 1,999,990 kHz	2,400 mW 2.4 W 0.00322 hp 0.0024 kW		133.33 MHz 0.133 GHz 133,330 kHz	533.33 MT/s 0.533 GT/s 533,330 kT/s	✔	✔
Z560		45 nm 0.045 μm 4.5e-5 mm	June 2010	1	2	2.133 GHz 2,133.33 MHz 2,133,330 kHz	2,500 mW 2.5 W 0.00335 hp 0.0025 kW		133.33 MHz 0.133 GHz 133,330 kHz	533.33 MT/s 0.533 GT/s 533,330 kT/s	✔	✔
Count: 12

SoCs

• Atom x3, 2015
• Atom x5, 2015
• Atom x7, 2015

Microarchitectures

T/T	Process	µarch	Intro Date	Cores
Tick	45 nm	Bonnell	2008	Silverthorne, Diamondville
Tock			2010	Lincroft, Pineview, Tunnel Creek, Stellarton, Sodaville, Groveland
Tick	32 nm	Saltwell	2011	Clover Trail, Cedar Trail
Tick	22 nm	Silvermont	2013	Bay Trail
Tock	14 nm	Airmont	2015	Cherry Trail, Braswell
Tick		Goldmont	2016

Features

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