Krait (processor)

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Krait
General information
Launched2012
Designed byQualcomm
Common manufacturer
  • Qualcomm
Performance
Max. CPU clock rate1 GHz to 2.7 GHz
Cache
L1 cache16 KiB and 16 KiB
L2 cache1 MiB or 2 MiB
Architecture and classification
Instruction setARMv7-A, Thumb-2
Physical specifications
Cores
  • 2 or 4
History
PredecessorScorpion
SuccessorKryo

Qualcomm Krait is an ARM-based central processing unit included in the Snapdragon S4 and earlier models of Snapdragon 400/600/800 series SoCs. It was introduced in 2012 as a successor to the Scorpion CPU and although it has architectural similarities, Krait is not a Cortex-A15 core, but it was designed in-house.[1] In 2015, Krait was superseded by the 64-bit Kryo architecture, first introduced in Snapdragon 820 SoC.

Overview

[edit]
  • 11-stage integer pipeline with 3-way decode and 4-way out-of-order speculative issue superscalar execution
  • Pipelined VFPv4[2][under discussion] and 128-bit wide NEON (SIMD)
  • 7 execution ports
  • 4 KB + 4 KB direct mapped L0 cache
  • 16 KB + 16 KB 4-way set associative L1 cache
  • 1 MB (dual-core) or 2 MB (quad-core) 8-way set-associative L2 cache
  • Dual- or quad-core configurations
  • Performance (DMIPS/MHz):
    • Krait 200: 3.3 (28 nm LP)
    • Krait 300: 3.39[3] (28 nm LP)
    • Krait 400: 3.39 (28 nm HPm)
    • Krait 450: 3.51 (28 nm HPm)

See also

[edit]

References

[edit]
  1. ^ Brian Klug; Anand Lal Shimpi (October 7, 2011). "Qualcomm's New Snapdragon S4: MSM8960 & Krait Architecture Explored". Anandtech. Archived from the original on October 9, 2011. Retrieved 2013-07-28.
  2. ^ Brian Klug; Anand Lal Shimpi (February 21, 2012). "Qualcomm Snapdragon S4 (Krait) Performance Preview - 1.5 GHz MSM8960 MDP and Adreno 225 Benchmarks". Anandtech. Archived from the original on January 16, 2013. Retrieved 2013-07-28.
  3. ^ Linley Gwennap (December 18, 2012). "Krait 300 Bumps Up Performance". Linley on Mobile. The Linley Group. Retrieved 2013-07-28.
[edit]
Retrieved from "https://en.wikipedia.org/w/index.php?title=Krait_(processor)&oldid=1304462659"
    Krait
    General information
    Launched2012
    Designed byQualcomm
    Common manufacturer
    • Qualcomm
    Performance
    Max. CPU clock rate1 GHz to 2.7 GHz
    Cache
    L1 cache16 KiB and 16 KiB
    L2 cache1 MiB or 2 MiB
    Architecture and classification
    Instruction setARMv7-A, Thumb-2
    Physical specifications
    Cores
    • 2 or 4
    History
    PredecessorScorpion
    SuccessorKryo

    Qualcomm Krait is an ARM-based central processing unit included in the Snapdragon S4 and earlier models of Snapdragon 400/600/800 series SoCs. It was introduced in 2012 as a successor to the Scorpion CPU and although it has architectural similarities, Krait is not a Cortex-A15 core, but it was designed in-house.[1] In 2015, Krait was superseded by the 64-bit Kryo architecture, first introduced in Snapdragon 820 SoC.

    Overview

    • 11-stage integer pipeline with 3-way decode and 4-way out-of-order speculative issue superscalar execution
    • Pipelined VFPv4[2][under discussion] and 128-bit wide NEON (SIMD)
    • 7 execution ports
    • 4 KB + 4 KB direct mapped L0 cache
    • 16 KB + 16 KB 4-way set associative L1 cache
    • 1 MB (dual-core) or 2 MB (quad-core) 8-way set-associative L2 cache
    • Dual- or quad-core configurations
    • Performance (DMIPS/MHz):
      • Krait 200: 3.3 (28 nm LP)
      • Krait 300: 3.39[3] (28 nm LP)
      • Krait 400: 3.39 (28 nm HPm)
      • Krait 450: 3.51 (28 nm HPm)

    See also

    References

    1. ^ Brian Klug; Anand Lal Shimpi (October 7, 2011). "Qualcomm's New Snapdragon S4: MSM8960 & Krait Architecture Explored". Anandtech. Archived from the original on October 9, 2011. Retrieved 2013-07-28.
    2. ^ Brian Klug; Anand Lal Shimpi (February 21, 2012). "Qualcomm Snapdragon S4 (Krait) Performance Preview - 1.5 GHz MSM8960 MDP and Adreno 225 Benchmarks". Anandtech. Archived from the original on January 16, 2013. Retrieved 2013-07-28.
    3. ^ Linley Gwennap (December 18, 2012). "Krait 300 Bumps Up Performance". Linley on Mobile. The Linley Group. Retrieved 2013-07-28.
    • Qualcomm's Snapdragon S4 Site.
    Retrieved from "https://en.wikipedia.org/w/index.php?title=Krait_(processor)&oldid=1304462659"