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The Evolving RISC-V Architectures

Cross-Architecture Performance Tracking

Tracking performance trends across leading architectures.

Current tests are scalar only.

Architecture Summary

Arm

AWS EC2 Graviton4 (Neoverse V2) Instance 2.8GHz

XSCC 1.1

SPECint/GHz23.05
Top 1 score
23.05
Top 1 of
5 tests
Latest run
2026-06-26
KMHv3

OpenXiangShan KMHv3 RTL 3GHz

XSCC 1.1

SPECint/GHz18.75
Top 1 score
18.75
Top 1 of
6 tests
Latest run
2026-06-14
x86

AMD Ryzen 9 9950X (Zen 5) 5.7GHz

GCC 15.1.0

SPECint/GHz17.72
Top 1 score
17.72
Top 1 of
3 tests
Latest run
2026-01-29

Scores

SPECint/GHz

  • AWS EC2 Graviton4 (Neoverse V2) Instance 2.8GHz · XSCC 1.123.05
  • AWS EC2 Graviton4 (Neoverse V2) Instance 2.8GHz · LLVM 21.1.022.54
  • AWS EC2 Graviton4 (Neoverse V2) Instance 2.8GHz · GCC 15.1.022.35
  • OpenXiangShan KMHv3 RTL 3GHz · XSCC 1.118.75
  • OpenXiangShan KMHv3 RTL 3GHz · XSCC 1.118.24
  • AMD Ryzen 9 9950X (Zen 5) 5.7GHz · GCC 15.1.017.72
  • T-Head Yitian 710 (Neoverse N2) 3GHz · XSCC 1.117.69
  • OpenXiangShan KMHv3 RTL 3GHz · XSCC 1.117.58
  • T-Head Yitian 710 (Neoverse N2) 3GHz · LLVM 21.1.017.46
  • OpenXiangShan KMHv3 RTL 3GHz · LLVM 21.1.016.47
  • AMD Ryzen 9 9950X (Zen 5) 5.7GHz · LLVM 21.1.016.40
  • OpenXiangShan KMHv3 RTL 3GHz · GCC 12.1.016.02
  • OpenXiangShan KMHv3 RTL 3GHz · GCC 12.1.015.28
  • Intel Core i9-14900K (Raptor Cove) 6GHz · GCC 15.1.014.93
Show numbers
  • 1AWS EC2 Graviton4 (Neoverse V2) Instance 2.8GHzXSCC 1.1Arm23.05
  • 2AWS EC2 Graviton4 (Neoverse V2) Instance 2.8GHzLLVM 21.1.0Arm22.54
  • 3AWS EC2 Graviton4 (Neoverse V2) Instance 2.8GHzGCC 15.1.0Arm22.35
  • 4OpenXiangShan KMHv3 RTL 3GHzXSCC 1.1KMHv318.75
  • 5OpenXiangShan KMHv3 RTL 3GHzXSCC 1.1KMHv318.24
  • 6AMD Ryzen 9 9950X (Zen 5) 5.7GHzGCC 15.1.0x8617.72
  • 7T-Head Yitian 710 (Neoverse N2) 3GHzXSCC 1.1Arm17.69
  • 8OpenXiangShan KMHv3 RTL 3GHzXSCC 1.1KMHv317.58
  • 9T-Head Yitian 710 (Neoverse N2) 3GHzLLVM 21.1.0Arm17.46
  • 10OpenXiangShan KMHv3 RTL 3GHzLLVM 21.1.0KMHv316.47
  • 11AMD Ryzen 9 9950X (Zen 5) 5.7GHzLLVM 21.1.0x8616.40
  • 12OpenXiangShan KMHv3 RTL 3GHzGCC 12.1.0KMHv316.02
  • 13OpenXiangShan KMHv3 RTL 3GHzGCC 12.1.0KMHv315.28
  • 14Intel Core i9-14900K (Raptor Cove) 6GHzGCC 15.1.0x8614.93

KMHv3 Version Progress

SPECint/GHz

Best score across all architectures for the current filters.Neoverse V2 (Arm) 23.05
15.28
16.02
17.58
18.24
18.75
  1. 2025-12-19
  2. 2025-12-31
  3. 2026-01-21
  4. 2026-04-30
  5. 2026-06-05
Show numbers
  1. 12025-12-19GCC 12.1.02025-12-1915.28
  2. 22025-12-31GCC 12.1.02025-12-3116.02
  3. 32026-01-21XSCC 1.12026-01-2117.58
  4. 42026-04-30XSCC 1.12026-04-3018.24
  5. 52026-06-05XSCC 1.12026-06-1418.75

Benchmarks

400.perlbench · SPECint/GHz · base

Reference time: 9770sratio = 9770 / runtime

  • ArmAWS EC2 Graviton4 (Neoverse V2) Instance 2.8GHz21.29
  • x86AMD Ryzen 9 9950X (Zen 5) 5.7GHz20.18
  • KMHv3OpenXiangShan KMHv3 RTL 3GHz15.74
Show numbers
  • 1AWS EC2 Graviton4 (Neoverse V2) Instance 2.8GHzGCC 15.1.0Arm21.29
  • 2AWS EC2 Graviton4 (Neoverse V2) Instance 2.8GHzLLVM 21.1.0Arm20.93
  • 3AWS EC2 Graviton4 (Neoverse V2) Instance 2.8GHzXSCC 1.1Arm20.54
  • 4AMD Ryzen 9 9950X (Zen 5) 5.7GHzGCC 15.1.0x8620.18
  • 5AMD Ryzen 9 9950X (Zen 5) 5.7GHzLLVM 21.1.0x8619.65
  • 6Intel Core i9-14900K (Raptor Cove) 6GHzGCC 15.1.0x8617.67
  • 7T-Head Yitian 710 (Neoverse N2) 3GHzGCC 15.1.0Arm16.37
  • 8Intel Core i9-14900K (Raptor Cove) 6GHzLLVM 21.1.0x8616.02
  • 9OpenXiangShan KMHv3 RTL 3GHzXSCC 1.1KMHv315.74
  • 10OpenXiangShan KMHv3 RTL 3GHzLLVM 21.1.0KMHv315.67
  • 11OpenXiangShan KMHv3 RTL 3GHzXSCC 1.1KMHv315.49
  • 12OpenXiangShan KMHv3 RTL 3GHzXSCC 1.1KMHv315.31
  • 13T-Head Yitian 710 (Neoverse N2) 3GHzLLVM 21.1.0Arm15.30
  • 14T-Head Yitian 710 (Neoverse N2) 3GHzXSCC 1.1Arm15.03
  • 15OpenXiangShan KMHv3 RTL 3GHzGCC 12.1.0KMHv312.79
  • 16OpenXiangShan KMHv3 RTL 3GHzGCC 12.1.0KMHv312.24

Overall Ranking

Show numbers (14)
#ArchitectureMachineCompilerSPECint/GHzRun date
1ArmAWS EC2 Graviton4 (Neoverse V2) Instance 2.8GHzXSCC 1.123.052026-06-26
2ArmAWS EC2 Graviton4 (Neoverse V2) Instance 2.8GHzLLVM 21.1.022.542026-06-26
3ArmAWS EC2 Graviton4 (Neoverse V2) Instance 2.8GHzGCC 15.1.022.352026-06-26
4KMHv3OpenXiangShan KMHv3 RTL 3GHzXSCC 1.118.752026-06-14
5KMHv3OpenXiangShan KMHv3 RTL 3GHzXSCC 1.118.242026-04-30
6x86AMD Ryzen 9 9950X (Zen 5) 5.7GHzGCC 15.1.017.722026-01-22
7ArmT-Head Yitian 710 (Neoverse N2) 3GHzXSCC 1.117.692026-06-22
8KMHv3OpenXiangShan KMHv3 RTL 3GHzXSCC 1.117.582026-01-21
9ArmT-Head Yitian 710 (Neoverse N2) 3GHzLLVM 21.1.017.462026-06-22
10KMHv3OpenXiangShan KMHv3 RTL 3GHzLLVM 21.1.016.472026-05-15
11x86AMD Ryzen 9 9950X (Zen 5) 5.7GHzLLVM 21.1.016.402026-01-29
12KMHv3OpenXiangShan KMHv3 RTL 3GHzGCC 12.1.016.022025-12-31
13KMHv3OpenXiangShan KMHv3 RTL 3GHzGCC 12.1.015.282025-12-19
14x86Intel Core i9-14900K (Raptor Cove) 6GHzGCC 15.1.014.932026-01-29