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AMD - Ryzen 7 9700X vs AMD - Ryzen 9 9900X

Last updated · How Mars Score works
Ryzen 7 9700XAMDRENDER
Probe A
AMD
Ryzen 7 9700X
51.5/ 100D
Cores52· 40%
Benchmarks51· 40%
Platform—· 20%
Ryzen 9 9900XAMDRENDER
Probe B
AMD
Ryzen 9 9900X
56.6/ 100D
Cores55· 40%
Benchmarks58· 40%
Platform—· 20%
Quick verdict

Between the Ryzen 7 9700X and Ryzen 9 9900X, the Ryzen 7 9700X comes out ahead in tdp, while the Ryzen 9 9900X wins on l3 cache and cores. Overall, the Ryzen 7 9700X scores 51.5 and the Ryzen 9 9900X scores 56.6 on our Mars Score.

Buying advice

Which should you buy?

The Ryzen 9 9900X edges ahead on the Mars Score (51.5 vs 56.6), but the 5.1-point gap is small enough that the right pick comes down to which spec advantages matter to you.

Pick the Ryzen 7 9700X if you care most about tdp. The biggest gaps in its favor are tdp.

Pick the Ryzen 9 9900X if you push the hardware — gaming, on-device AI, heavy multitasking — and the extra compute headroom is worth the trade-offs. Its strongest claims are l3 cache, cores, cinebench r23 (multi), among others.

There are no meaningful ties on the headline specs — every popular-comparison metric has a winner.

Bottom line: the Ryzen 9 9900X is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.

Why AMD - Ryzen 7 9700X wins

  • ▲TDP — 55.00 W less. 65 vs 120.

Why AMD - Ryzen 9 9900X wins

  • ▲L3 cache — 100.00% more. 64 MB vs 32 MB.
  • ▲Cores — 50.00% more. 12 vs 8.
  • ▲Cinebench R23 (multi) — 42.54% more. 32500 vs 22800.
  • ▲Boost clock — 1.82% more. 5.6 GHz vs 5.5 GHz.
Full readout

Spec comparison

Cores

SpecAMD - Ryzen 7 9700XAMD - Ryzen 9 9900X
Coresⓘ812lead
Threadsⓘ1624lead
Base clockⓘ3.8 GHz4.4 GHzlead
Boost clockⓘ5.5 GHz5.6 GHzlead
L3 cacheⓘ32 MB64 MBlead

Platform

SpecAMD - Ryzen 7 9700XAMD - Ryzen 9 9900X
SocketⓘAM5AM5
TDPⓘ65 Wlead120 W
Integrated graphicsⓘtruetrue
DDR5ⓘtruetrue

Benchmarks

SpecAMD - Ryzen 7 9700XAMD - Ryzen 9 9900X
Cinebench R23 (multi)ⓘ2280032500lead
Cinebench R23 (single)ⓘ21802230lead
Reader questions

Frequently asked

Drill down

Spec-level deep dives

Cores→Threads→Base clock→Boost clock→L3 cache→Socket→TDP→Integrated graphics→DDR5→Cinebench R23 (multi)→Cinebench R23 (single)→
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