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AMD Ryzen 7 9800X3D vs Intel Core i5-8400

WINNER
AMD Ryzen 7 9800X3D
77.6Inno Score
VS
Intel Core i5-8400
29Inno Score
85.2Single-core31.1
64.7Multi-core28.6
91.9Gamingspec-based27.2
18 spec wins — AMD Ryzen 7 9800X3D2 spec wins — Intel Core i5-8400

InnoReviews verdict

AMD Ryzen 7 9800X3D wins this desktop processor face-off, 77.6 to 29, pulling ahead mainly in single-core (+54) and multi-core (+36). Intel Core i5-8400 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 9800X3D

  • Stronger single-core score: 85 vs 31
  • Stronger multi-core score: 65 vs 29
  • 967% higher L3 cache: 96 MB vs 9 MB
  • 433% higher L2 cache: 8 MB vs 2 MB
  • 335% higher PassMark: 40,000 vs 9,200

Reasons to pick the Intel Core i5-8400

  • 46% lower Base TDP: 65 W vs 120 W
  • Has Cooler included — the other doesn't
  • Lower launch price: $182 vs $479

General

General comparison: AMD Ryzen 7 9800X3D versus Intel Core i5-8400
SpecAMD Ryzen 7 9800X3DIntel Core i5-8400
Announced20242017
SocketAM5LGA1151-v2
Process4 nm+71%14 nm
Base TDP120 W65 W+46%
Max turbo power162 W—
Unlocked multiplierYesNo
Cooler includedNoYes

Cores & Clocks

Cores & Clocks comparison: AMD Ryzen 7 9800X3D versus Intel Core i5-8400
SpecAMD Ryzen 7 9800X3DIntel Core i5-8400
Cores8+33%6
Performance cores8+33%6
Efficiency cores00
Threads16+167%6
Base clock4.7 GHz+68%2.8 GHz
Boost clock5.2 GHz+30%4 GHz
L2 cache8 MB+433%2 MB
L3 cache96 MB+967%9 MB

Integrated GPU

Integrated GPU comparison: AMD Ryzen 7 9800X3D versus Intel Core i5-8400
SpecAMD Ryzen 7 9800X3DIntel Core i5-8400
iGPUAMD Radeon Graphics (2 CU RDNA 2)Intel UHD Graphics 630
iGPU clock2,200 MHz1,050 MHz

Memory

Memory comparison: AMD Ryzen 7 9800X3D versus Intel Core i5-8400
SpecAMD Ryzen 7 9800X3DIntel Core i5-8400
Memory supportDDR5-5600DDR4-2666
Max memory192 GB+200%64 GB
Memory channels22

Platform

Platform comparison: AMD Ryzen 7 9800X3D versus Intel Core i5-8400
SpecAMD Ryzen 7 9800X3DIntel Core i5-8400
PCIe version5+67%3
CPU PCIe lanes28+75%16

Benchmarks

Benchmarks comparison: AMD Ryzen 7 9800X3D versus Intel Core i5-8400
SpecAMD Ryzen 7 9800X3DIntel Core i5-8400
Geekbench 6 (single)3,150+130%Top 12%1,370Bottom 22%
Geekbench 6 (multi)18,500+278%Top 18%4,900Bottom 19%
Cinebench R23 (single)2,130+85%Top 19%1,150Bottom 22%
Cinebench R23 (multi)19,500+205%Top 29%6,400Bottom 19%
PassMark40,000+335%Top 25%9,200Bottom 14%

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