X-Gene
Developer	AppliedMicro
Manufacturer	TSMC
Type	Microprocessors
Introduction	October 28, 2011 (announced) 2012 (launch)
ISA	ARM
µarch	Storm, Shadowcat, Skylark
Word size	64 bit 8 octets 16 nibbles
Process	40 nm 0.04 μm 4.0e-5 mm , 28 nm 0.028 μm 2.8e-5 mm , 16 nm 0.016 μm 1.6e-5 mm
Technology	CMOS
Clock	2.4 GHz-3.3 GHz
Succession
	→
	eMAG

X-Gene was a family of 64-bit ARM server microprocessors designed and introduced by AppliedMicro.

Overview

X-Gene was a family of high-performance multi-core ARM microprocessors first announced by AppliedMicro in 2011. Unlike their traditional product offering, X-Gene directly targeted high-performance data center servers, a market predominantly dominated by Intel Xeon processors. AppliedMicro introduced two generations of server processors based on their own custom ARM microarchitectures - Storm and Shadowcat. Those two generations shipped a total of 25,000 units. In late 2016, MACOM acquired AppliedMicro resulting in the shelving of third-generation X-Gene based on the Skylark microarchitecture. The X-Gene intellectual property including most of the design team was eventually sold to Ampere Computing has rebranded the design and improved on it under the eMAG brand.

Naming Scheme

Members

X-Gene 1

See also: Storm microarchitecture

First-generation of X-Gene processors were announced in October 2011 and later launched in late 2012. X-Gene 1 processors are based on the Storm microarchitecture and were fabricated on TSMC's 40 nm process. Those processors had up to four memory channels and up to eight cores operating at up to 2.4 GHz.

• Mem: up to 4 memory channels, DDR3 @ up to 1866 MT/s
• Tech: ARMv8 (ARMv8.0-A)
• I/O: 17 PCIe, SATA/SGMII, 2x SGMII/XFI, 1x RGMII

	List of Storm-based Processors
Model	Launched	Cores	Frequency	L3$	Mem Chans
APM883204-X1	2012	4	4 MiB 4,096 KiB 4,194,304 B 0.00391 GiB		4
APM883208-X1	2012	8	8 MiB 8,192 KiB 8,388,608 B 0.00781 GiB		2
APM883408-X1	2012	8	8 MiB 8,192 KiB 8,388,608 B 0.00781 GiB		4
Count: 3

X-Gene 2

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X-Gene 3

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See also

• Cavium ThunderX2
• Qualcomm Centriq

Bibliography

• David Schor. (February 5, 2018). "X-Gene 3 gets a second chance at Ampere with a new 32-core 16nm ARM processor".