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InnoReviews

AMD Ryzen 7 7840U vs AMD Ryzen 7 H 255

WINNER
AMD Ryzen 7 7840U
59Inno Score
VS
AMD Ryzen 7 H 255
57.3Inno Score
60.8Single-core59.8
47.5Multi-core51
73.5Efficiencyspec-based53.8
68.5iGPU71.7
61.8Platformspec-based61.8
4 spec wins — AMD Ryzen 7 7840U7 spec wins — AMD Ryzen 7 H 255

InnoReviews verdict

AMD Ryzen 7 7840U wins this laptop processor face-off, 59 to 57.3, pulling ahead mainly in single-core (+1). AMD Ryzen 7 H 255 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 7 7840U

  • 38% lower Base TDP: 28 W vs 45 W

Reasons to pick the AMD Ryzen 7 H 255

  • Stronger multi-core score: 51 vs 48
  • Stronger iGPU score: 72 vs 69
  • 80% higher Max TDP: 54 W vs 30 W
  • 16% higher PassMark: 28,205 vs 24,388
  • 16% higher 3DMark Time Spy Graphics (iGPU): 3,077 vs 2,659

General

General comparison: AMD Ryzen 7 7840U versus AMD Ryzen 7 H 255
SpecAMD Ryzen 7 7840UAMD Ryzen 7 H 255
Announced20232025
Process4 nm4 nm
Base TDP28 W+38%45 W
Max TDP30 W54 W+80%

Cores & Clocks

Cores & Clocks comparison: AMD Ryzen 7 7840U versus AMD Ryzen 7 H 255
SpecAMD Ryzen 7 7840UAMD Ryzen 7 H 255
Cores88
Performance cores88
Efficiency cores—0
Threads1616
Base clock3.3 GHz3.8 GHz+15%
Boost clock5.1 GHz+4%4.9 GHz
L3 cache16 MB16 MB

Integrated GPU

Integrated GPU comparison: AMD Ryzen 7 7840U versus AMD Ryzen 7 H 255
SpecAMD Ryzen 7 7840UAMD Ryzen 7 H 255
iGPUAMD Radeon 780MAMD Radeon 780M
iGPU clock2,700 MHz2,600 MHz

Memory

Memory comparison: AMD Ryzen 7 7840U versus AMD Ryzen 7 H 255
SpecAMD Ryzen 7 7840UAMD Ryzen 7 H 255
Memory supportLPDDR5X-7500 / DDR5-5600LPDDR5X-7500 / DDR5-5600
Max memory256 GB256 GB

Benchmarks

Benchmarks comparison: AMD Ryzen 7 7840U versus AMD Ryzen 7 H 255
SpecAMD Ryzen 7 7840UAMD Ryzen 7 H 255
Geekbench 6 (single)2,580+1%Top 45%2,546Top 48%
Geekbench 6 (multi)11,700Top 47%12,670+8%Top 39%
Cinebench R23 (single)1,740+2%Top 48%1,708Top 50%
Cinebench R23 (multi)14,500Top 39%16,137+11%Top 32%
PassMark24,388Top 37%28,205+16%Top 25%
3DMark Time Spy Graphics (iGPU)2,659Top 23%3,077+16%Top 17%

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