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InnoReviews

AMD Ryzen 9 8945H vs AMD Ryzen 9 9955HX

A
57.3Inno Score
VS
WINNER
AMD Ryzen 9 9955HX
69.5Inno Score
63.6Single-core74.2
52.5Multi-core82
53.8Efficiencyspec-based42.2
—iGPU32.6
61.8Platformspec-based84.3
2 spec wins — AMD Ryzen 9 8945H12 spec wins — AMD Ryzen 9 9955HX

InnoReviews verdict

AMD Ryzen 9 9955HX wins this laptop processor face-off, 69.5 to 57.3, pulling ahead mainly in multi-core (+30) and single-core (+11). AMD Ryzen 9 8945H still makes sense if its price or standout specs fit your needs better.

Which would you pick?

Key differences

Reasons to pick the AMD Ryzen 9 8945H

  • 60% higher Base clock: 4 GHz vs 2.5 GHz
  • 18% lower Base TDP: 45 W vs 55 W

Reasons to pick the AMD Ryzen 9 9955HX

  • Stronger single-core score: 74 vs 64
  • Stronger multi-core score: 82 vs 53
  • 300% higher L3 cache: 64 MB vs 16 MB
  • 113% higher Cinebench R23 (multi): 37,500 vs 17,604
  • 100% higher cores: 16 vs 8

General

General comparison: AMD Ryzen 9 8945H versus AMD Ryzen 9 9955HX
SpecAMD Ryzen 9 8945HAMD Ryzen 9 9955HX
Announced20242025
Process4 nm4 nm
Base TDP45 W+18%55 W
Max TDP54 W75 W+39%

Cores & Clocks

Cores & Clocks comparison: AMD Ryzen 9 8945H versus AMD Ryzen 9 9955HX
SpecAMD Ryzen 9 8945HAMD Ryzen 9 9955HX
Cores816+100%
Performance cores816+100%
Efficiency cores0—
Threads1632+100%
Base clock4 GHz+60%2.5 GHz
Boost clock5.2 GHz5.4 GHz+4%
L3 cache16 MB64 MB+300%

Integrated GPU

Integrated GPU comparison: AMD Ryzen 9 8945H versus AMD Ryzen 9 9955HX
SpecAMD Ryzen 9 8945HAMD Ryzen 9 9955HX
iGPUAMD Radeon 780MAMD Radeon 610M
iGPU clock2,800 MHz2,200 MHz

Memory

Memory comparison: AMD Ryzen 9 8945H versus AMD Ryzen 9 9955HX
SpecAMD Ryzen 9 8945HAMD Ryzen 9 9955HX
Memory supportLPDDR5X-7500 / DDR5-5600DDR5-5600
Max memory256 GB256 GB

Benchmarks

Benchmarks comparison: AMD Ryzen 9 8945H versus AMD Ryzen 9 9955HX
SpecAMD Ryzen 9 8945HAMD Ryzen 9 9955HX
Geekbench 6 (single)2,702Top 38%3,080+14%Top 16%
Geekbench 6 (multi)12,650Top 39%19,500+54%Top 11%
Cinebench R23 (single)1,813Top 35%2,150+19%Top 11%
Cinebench R23 (multi)17,604Top 22%37,500+113%Top 2%
PassMark30,083Top 21%56,261+87%Top 4%
3DMark Time Spy Graphics (iGPU)—528Bottom 19%

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