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AMD Ryzen 5 8645HS vs Intel Core Ultra 7 255H

AMD Ryzen 5 8645HS
55.4Inno Score
VS
WINNER
Intel Core Ultra 7 255H
65.3Inno Score
59.3Single-core69.7
44.1Multi-core56.8
65.4Efficiencyspec-based75.7
64.9iGPU75.9
58.8Platformspec-based60.5
2 spec wins — AMD Ryzen 5 8645HS14 spec wins — Intel Core Ultra 7 255H

InnoReviews verdict

Intel Core Ultra 7 255H wins this laptop processor face-off, 65.3 to 55.4, pulling ahead mainly in multi-core (+13) and iGPU (+11). 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

  • 115% higher Base clock: 4.3 GHz vs 2 GHz
  • 100% higher Max memory: 256 GB vs 128 GB

Reasons to pick the Intel Core Ultra 7 255H

  • Stronger single-core score: 70 vs 59
  • Stronger multi-core score: 57 vs 44
  • Stronger iGPU score: 76 vs 65
  • 167% higher cores: 16 vs 6
  • 113% higher Max TDP: 115 W vs 54 W

General

General comparison: AMD Ryzen 5 8645HS versus Intel Core Ultra 7 255H
SpecAMD Ryzen 5 8645HSIntel Core Ultra 7 255H
Announced20232025
Process4 nm3 nm+25%
Base TDP35 W28 W+20%
Max TDP54 W115 W+113%

Cores & Clocks

Cores & Clocks comparison: AMD Ryzen 5 8645HS versus Intel Core Ultra 7 255H
SpecAMD Ryzen 5 8645HSIntel Core Ultra 7 255H
Cores616+167%
Performance cores66
Efficiency cores—10
Threads1216+33%
Base clock4.3 GHz+115%2 GHz
Boost clock5 GHz5.1 GHz+2%
L3 cache16 MB24 MB+50%

Integrated GPU

Integrated GPU comparison: AMD Ryzen 5 8645HS versus Intel Core Ultra 7 255H
SpecAMD Ryzen 5 8645HSIntel Core Ultra 7 255H
iGPUAMD Radeon 760MIntel Arc 140T
iGPU clock2,600 MHz2,250 MHz

Memory

Memory comparison: AMD Ryzen 5 8645HS versus Intel Core Ultra 7 255H
SpecAMD Ryzen 5 8645HSIntel Core Ultra 7 255H
Memory supportLPDDR5X-7500 / DDR5-5600LPDDR5X-8400 / DDR5-6400
Max memory256 GB+100%128 GB

Benchmarks

Benchmarks comparison: AMD Ryzen 5 8645HS versus Intel Core Ultra 7 255H
SpecAMD Ryzen 5 8645HSIntel Core Ultra 7 255H
Geekbench 6 (single)2,520Top 49%2,851+13%Top 29%
Geekbench 6 (multi)10,300Bottom 41%15,362+49%Top 22%
Cinebench R23 (single)1,700Top 48%2,055+21%Top 18%
Cinebench R23 (multi)13,000Top 47%18,624+43%Top 20%
PassMark21,977Top 45%30,782+40%Top 21%
3DMark Time Spy Graphics (iGPU)2,260Top 32%3,719+65%Top 7%

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