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AMD Ryzen 5 8645HS vs AMD Ryzen 7 H 255

AMD Ryzen 5 8645HS
55.4Inno Score
VS
WINNER
AMD Ryzen 7 H 255
57.3Inno Score
59.3Single-core59.8
44.1Multi-core51
65.4Efficiencyspec-based53.8
64.9iGPU71.7
58.8Platformspec-based61.8
3 spec wins — AMD Ryzen 5 8645HS10 spec wins — AMD Ryzen 7 H 255

InnoReviews verdict

AMD Ryzen 7 H 255 wins this laptop processor face-off, 57.3 to 55.4, pulling ahead mainly in multi-core (+7) and iGPU (+7). AMD Ryzen 5 8645HS 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 5 8645HS

  • 22% lower Base TDP: 35 W vs 45 W
  • 13% higher Base clock: 4.3 GHz vs 3.8 GHz

Reasons to pick the AMD Ryzen 7 H 255

  • Stronger multi-core score: 51 vs 44
  • Stronger iGPU score: 72 vs 65
  • 36% higher 3DMark Time Spy Graphics (iGPU): 3,077 vs 2,260
  • 33% higher cores: 8 vs 6
  • 33% higher Performance cores: 8 vs 6

General

General comparison: AMD Ryzen 5 8645HS versus AMD Ryzen 7 H 255
SpecAMD Ryzen 5 8645HSAMD Ryzen 7 H 255
Announced20232025
Process4 nm4 nm
Base TDP35 W+22%45 W
Max TDP54 W54 W

Cores & Clocks

Cores & Clocks comparison: AMD Ryzen 5 8645HS versus AMD Ryzen 7 H 255
SpecAMD Ryzen 5 8645HSAMD Ryzen 7 H 255
Cores68+33%
Performance cores68+33%
Efficiency cores—0
Threads1216+33%
Base clock4.3 GHz+13%3.8 GHz
Boost clock5 GHz+2%4.9 GHz
L3 cache16 MB16 MB

Integrated GPU

Integrated GPU comparison: AMD Ryzen 5 8645HS versus AMD Ryzen 7 H 255
SpecAMD Ryzen 5 8645HSAMD Ryzen 7 H 255
iGPUAMD Radeon 760MAMD Radeon 780M
iGPU clock2,600 MHz2,600 MHz

Memory

Memory comparison: AMD Ryzen 5 8645HS versus AMD Ryzen 7 H 255
SpecAMD Ryzen 5 8645HSAMD Ryzen 7 H 255
Memory supportLPDDR5X-7500 / DDR5-5600LPDDR5X-7500 / DDR5-5600
Max memory256 GB256 GB

Benchmarks

Benchmarks comparison: AMD Ryzen 5 8645HS versus AMD Ryzen 7 H 255
SpecAMD Ryzen 5 8645HSAMD Ryzen 7 H 255
Geekbench 6 (single)2,520Top 50%2,546+1%Top 48%
Geekbench 6 (multi)10,300Bottom 41%12,670+23%Top 39%
Cinebench R23 (single)1,700Bottom 50%1,708Top 50%
Cinebench R23 (multi)13,000Top 47%16,137+24%Top 32%
PassMark21,977Top 45%28,205+28%Top 25%
3DMark Time Spy Graphics (iGPU)2,260Top 33%3,077+36%Top 17%

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