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InnoReviews

AMD Ryzen 9 9900X vs AMD Ryzen 9 PRO 9945

WINNER
AMD Ryzen 9 9900X
85.2Inno Score
VS
AMD Ryzen 9 PRO 9945
81.4Inno Score
87.4Single-core86.4
84Multi-core76.9
84.6Gamingspec-based83.3
5 spec wins — AMD Ryzen 9 9900X3 spec wins — AMD Ryzen 9 PRO 9945

InnoReviews verdict

AMD Ryzen 9 9900X wins this desktop processor face-off, 85.2 to 81.4, pulling ahead mainly in multi-core (+7) and single-core (+1). AMD Ryzen 9 PRO 9945 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 9900X

  • Stronger multi-core score: 84 vs 77
  • 29% higher Base clock: 4.4 GHz vs 3.4 GHz
  • 12% higher PassMark: 54,286 vs 48,664
  • Has Unlocked multiplier — the other doesn't

Reasons to pick the AMD Ryzen 9 PRO 9945

  • 46% lower Base TDP: 65 W vs 120 W
  • Has Cooler included — the other doesn't

General

General comparison: AMD Ryzen 9 9900X versus AMD Ryzen 9 PRO 9945
SpecAMD Ryzen 9 9900XAMD Ryzen 9 PRO 9945
Announced20242025
SocketAM5AM5
Process4 nm4 nm
Base TDP120 W65 W+46%
Max turbo power162 W—
Unlocked multiplierYesNo
Cooler includedNoYes

Cores & Clocks

Cores & Clocks comparison: AMD Ryzen 9 9900X versus AMD Ryzen 9 PRO 9945
SpecAMD Ryzen 9 9900XAMD Ryzen 9 PRO 9945
Cores1212
Performance cores1212
Efficiency cores00
Threads2424
Base clock4.4 GHz+29%3.4 GHz
Boost clock5.6 GHz+4%5.4 GHz
L2 cache12 MB12 MB
L3 cache64 MB64 MB

Integrated GPU

Integrated GPU comparison: AMD Ryzen 9 9900X versus AMD Ryzen 9 PRO 9945
SpecAMD Ryzen 9 9900XAMD Ryzen 9 PRO 9945
iGPUAMD Radeon Graphics (2 CU RDNA 2)AMD Radeon Graphics (2 CU)
iGPU clock2,200 MHz2,200 MHz

Memory

Memory comparison: AMD Ryzen 9 9900X versus AMD Ryzen 9 PRO 9945
SpecAMD Ryzen 9 9900XAMD Ryzen 9 PRO 9945
Memory supportDDR5-5600DDR5-5600
Max memory192 GB192 GB
Memory channels22

Platform

Platform comparison: AMD Ryzen 9 9900X versus AMD Ryzen 9 PRO 9945
SpecAMD Ryzen 9 9900XAMD Ryzen 9 PRO 9945
PCIe version55
CPU PCIe lanes2828

Benchmarks

Benchmarks comparison: AMD Ryzen 9 9900X versus AMD Ryzen 9 PRO 9945
SpecAMD Ryzen 9 9900XAMD Ryzen 9 PRO 9945
Cinebench R23 (single)2,230Top 11%—
PassMark54,286+12%Top 11%48,664Top 15%
PassMark (single thread)4,670+1%Top 9%4,619Top 10%
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