Krait (CPU)

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Krait
Production: since 2012
Producer: Qualcomm
Processor clock: 1 GHz to 2.7 GHz
Instruction set : ARMv7 instruction set , Thumb instruction set
Name of the processor core: 1,2 or 4

Krait is an ARM -based processor that is included in the Qualcomm Snapdragon S4 and Snapdragon 400/600/800/801/805 (Krait 200, Krait 300, Krait 400 and Krait 450). It was introduced in 2012 as the successor to the CPU Scorpion , and although it shares architectural similarities, Krait is not a Cortex-A15 core, but was developed in-house.

overview

  • 11-step integer pipeline with 3-way decoding, 4-way out-of-order execution , speculative execution and superscalarity
  • Floating point pipeline VFPv4 and 128 bit wide NEON ( SIMD )
  • 7 execution ports
  • 4 KB + 4 KB directly mapped L0 cache
  • 16 KB + 16 KB 4x set associative L1 cache
  • 1 MB (dual-core) or 2 MB (quad-core) 8-fold set-associative L2 cache
  • Dual or quad core configurations
  • Performance (DMIPS / MHz):
    • Krait 200: 3.3 (28 nm LP)
    • Krait 300: 3.39 (28 nm LP)
    • Krait 400: 3.39 (28 nm HPm)
    • Krait 450: 3.51 (28 nm HPm)

See also

Individual evidence

  1. ^ Evolution of Processor Architecture in Mobile Phones. P. 4 , accessed on August 31, 2018 (English).
  2. ↑ a b c Qualcomm Snapdragon S4 (Krait) Performance Preview - 1.5 GHz MSM8960 MDP and Adreno 225 benchmarks. February 21, 2012, accessed August 31, 2018 .
  3. ↑ Qualcomm's New Snapdragon S4: MSM8960 & Krait Architecture Explored . Anandtech . October 7, 2011. Retrieved July 28, 2013.
  4. ↑ Qualcomm Snapdragon S4 (Krait) Performance Preview - 1.5 GHz MSM8960 MDP and Adreno 225 benchmarks . Anandtech . February 21, 2012. Retrieved July 28, 2013.
  5. ↑ Linley Gwennap: Krait 300 Bumps Up Performance . In: Linley on Mobile . The Linley Group. December 18, 2012. Retrieved July 28, 2013.