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AMD - Ryzen 7 7800X3D vs AMD - Ryzen 9 7900X

Last updated · How Mars Score works
Ryzen 7 7800X3DAMDRENDER
Probe A
AMD
Ryzen 7 7800X3D
49.8/ 100D
Cores52· 40%
Benchmarks47· 40%
Platform—· 20%
Ryzen 9 7900XAMDRENDER
Probe B
AMD
Ryzen 9 7900X
55.6/ 100D
Cores55· 40%
Benchmarks56· 40%
Platform—· 20%
Quick verdict

Between the Ryzen 7 7800X3D and Ryzen 9 7900X, the Ryzen 7 7800X3D comes out ahead in l3 cache and tdp, while the Ryzen 9 7900X wins on cinebench r23 (multi) and cores. Overall, the Ryzen 7 7800X3D scores 49.8 and the Ryzen 9 7900X scores 55.6 on our Mars Score.

Buying advice

Which should you buy?

The Ryzen 9 7900X edges ahead on the Mars Score (49.8 vs 55.6), but the 5.8-point gap is small enough that the right pick comes down to which spec advantages matter to you.

Pick the Ryzen 7 7800X3D if you care most about l3 cache and tdp. The biggest gaps in its favor are l3 cache, tdp.

Pick the Ryzen 9 7900X 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 cinebench r23 (multi), cores, boost clock.

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

Bottom line: the Ryzen 9 7900X 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 7800X3D wins

  • ▲L3 cache — 50.00% more. 96 MB vs 64 MB.
  • ▲TDP — 50.00 W less. 120 vs 170.

Why AMD - Ryzen 9 7900X wins

  • ▲Cinebench R23 (multi) — 64.44% more. 29600 vs 18000.
  • ▲Cores — 50.00% more. 12 vs 8.
  • ▲Boost clock — 12.00% more. 5.6 GHz vs 5.0 GHz.
Full readout

Spec comparison

Cores

SpecAMD - Ryzen 7 7800X3DAMD - Ryzen 9 7900X
Coresⓘ812lead
Threadsⓘ1624lead
Base clockⓘ4.2 GHz4.7 GHzlead
Boost clockⓘ5.0 GHz5.6 GHzlead
L3 cacheⓘ96 MBlead64 MB

Platform

SpecAMD - Ryzen 7 7800X3DAMD - Ryzen 9 7900X
SocketⓘAM5AM5
TDPⓘ120 Wlead170 W
Integrated graphicsⓘtruetrue
DDR5ⓘtruetrue

Benchmarks

SpecAMD - Ryzen 7 7800X3DAMD - Ryzen 9 7900X
Cinebench R23 (multi)ⓘ1800029600lead
Cinebench R23 (single)ⓘ18802030lead
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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