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
←	→
PACKETPro	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
	Processor				Memory
Model	Launched	Cores	Turbo	L3$	Type	Chans
APM883204-X1	2012	4	2.4 GHz 2,400 MHz 2,400,000 kHz	4 MiB 4,096 KiB 4,194,304 B 0.00391 GiB	DDR3-1866	4
APM883208-X1	2012	8	2.4 GHz 2,400 MHz 2,400,000 kHz	8 MiB 8,192 KiB 8,388,608 B 0.00781 GiB	DDR3-1866	2
APM883408-X1	2012	8	2.4 GHz 2,400 MHz 2,400,000 kHz	8 MiB 8,192 KiB 8,388,608 B 0.00781 GiB	DDR3-1866	4
Count: 3

X-Gene 2

See also: Shadowcat microarchitecture

Second-generation of X-Gene processors were announced in September 2014 and later launched in early 2015. X-Gene 2 processors are based on the Shadowcat microarchitecture and were fabricated on TSMC's 28 nm process. Though those processors were more of a refresh over their predecessor, the new process technology produced lower-power chips at similar performance. 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 Shadowcat-based Processors
	Processor				Memory
Model	Launched	Cores	Turbo	L3$	Type	Chans
APM883208-X2	March 2015	8	2.4 GHz 2,400 MHz 2,400,000 kHz	8 MiB 8,192 KiB 8,388,608 B 0.00781 GiB	DDR3-1866	2
APM883408-X2	March 2015	8	2.4 GHz 2,400 MHz 2,400,000 kHz	8 MiB 8,192 KiB 8,388,608 B 0.00781 GiB	DDR3-1866	4
Count: 2

X-Gene 3

This section is empty; you can help add the missing info by editing this page.

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".