Apple A6X

The A6X chip used in the fourth-generation iPad
General information
Launched	November 2, 2012
Discontinued	October 16, 2014
Designed by	Apple Inc.
Common manufacturer	Samsung Electronics
Product code	S5L8955X
Performance
Max.CPUclock rate	1.4 GHz[1]
Cache
L1cache	32 KB instruction + 32 KB data[2]
L2 cache	1 MB[3]
Architecture and classification
Application	Mobile
Technology node	32 nm.[4]
Microarchitecture	Swift[1]
Instruction set	ARMv7-A:[1]ARM,Thumb-2 with "armv7s" extensions (integer division, VFPv4, Advanced SIMDv2)[5]
Physical specifications
Cores	2[1]
GPU	PowerVR SGX554MP4 (quad-core)[1]
Products, models, variants
Variant	Apple A6
History
Predecessor	Apple A5X
Successor	Apple A7(APL5698 variant)

TheApple A6X is a32-bitsystem-on-a-chip (SoC) designed byApple Inc., part of theApple silicon series. It was introduced with and only used in the4th generation iPad, on October 23, 2012. It is a high-performance variant of theApple A6 and the last 32-bit chip Apple used on an iOS device before Apple switched to64-bit. Apple claims the A6X has twice the CPU performance and up to twice the graphics performance of its predecessor, theApple A5X.^[6] Software updates for the 4th generation iPad ended in 2019 with the release ofiOS 10.3.4 for cellular models, thus ceasing support for this chip as it was discontinued with the release ofiOS 11 in 2017.

The A6X features a 1.4 GHz custom Apple-designedARMv7-A architecture baseddual-core CPU called Swift,^[1] introduced in theApple A6.^[7] It includes an integrated quad-corePowerVR SGX554MP4graphics processing unit (GPU)^[1] running at 300 MHz^{[citation needed]} and a quad-channelmemory subsystem.^[1] The memory subsystem supports LPDDR2-1066 DRAM, increasing the theoretical memory bandwidth to 17 GB/s.^[3]

Unlike theA6, but similar to theA5X, the A6X is covered with a metalheat spreader, includes no RAM, and is not apackage-on-package (PoP) assembly. The A6X is manufactured bySamsung on aHigh-κmetal gate (HKMG) 32 nm process. It has a die with an area of 123 mm², 30% larger than the A6.^[4]

• iPad (4th generation)

• Apple silicon, the range of ARM-based processors designed by Apple.
• Apple A6

• Computer-related introductions in 2012
• Products and services discontinued in 2017
• Apple silicon

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