Krait (CPU)
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Krait CPU
Krait
Produced2012
Designed byQualcomm
Common manufacturer(s)
Max. CPU clock rate1 GHz to 2.7 GHz
Instruction setARMv7-A, Thumb-2
Cores2 or 4
L1 cache16KiB and 16KiB
L2 cache1MiB or 2MiB
PredecessorScorpion
SuccessorKryo

Krait is an ARM-based central processing unit designed by Qualcomm and included in their Snapdragon S4 and Snapdragon 400/600/800/801/805 (Krait 200, Krait 300, Krait 400 and Krait 450) System on chips. 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]

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. Retrieved .
  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. Retrieved .
  3. ^ Linley Gwennap (December 18, 2012). "Krait 300 Bumps Up Performance". Linley on Mobile. The Linley Group. Retrieved .

External links


  This article uses material from the Wikipedia page available here. It is released under the Creative Commons Attribution-Share-Alike License 3.0.

Krait_(CPU)
 



 



 
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