AMD
AMD Ryzen 9 5900
AMD's Ryzen 9 5900 is an OEM-only Zen 3 (Vermeer) processor for socket AM4 with 12 cores, 24 threads, a 3.0 GHz base clock, up to 4.7 GHz boost and 64 MB of L3 cache. It runs at a 65 W default TDP, against 105 W for the retail Ryzen 9 5900X, and was sold through system builders rather than as a boxed part.
Pros
- 12 cores and 24 threads with 64 MB of L3 and 6 MB of L2 cache
- 65 W default TDP, well below the 105 W of the Ryzen 9 5900X
- Boost clock of up to 4.7 GHz, only 100 MHz under the 5900X's 4.8 GHz
- PCIe 4.0 and DDR4 memory support up to 3200 MT/s
- AMD lists the multiplier as unlocked for overclocking
Cons
- Sold only to OEMs and system builders, not as a retail boxed processor
- 3.0 GHz base clock is 700 MHz below the 5900X's 3.7 GHz
- No integrated graphics, so a discrete GPU is required
- No official US retail price
Good
Computed from specs & benchmarks via our public methodology.
Full specifications
Everything we track for the AMD Ryzen 9 5900
General
- Announced
- 2021
- Socket
- AM4
- Process
- 7 nm
- Base TDP
- 65 W
- Unlocked multiplier
- Yes
Cores & Clocks
- Cores
- 12
- Performance cores
- 12
- Efficiency cores
- 0
- Threads
- 24
- Base clock
- 3 GHz
- Boost clock
- 4.7 GHz
- L2 cache
- 6 MB
- L3 cache
- 64 MB
Memory
- Memory support
- DDR4-3200
Platform
- PCIe version
- 4
Benchmarks
- PassMark
- 33,967Top 30%
- PassMark (single thread)
- 3,435Top 47%
Quick answers
Is the AMD Ryzen 9 5900 good in 2026?
The AMD Ryzen 9 5900 earns an Inno Score of 62.9/100 (“Good”) based on its specs and benchmark results. AMD's Ryzen 9 5900 is an OEM-only Zen 3 (Vermeer) processor for socket AM4 with 12 cores, 24 threads, a 3.0 GHz base clock, up to 4.7 GHz boost and 64 MB of L3 cache. It runs at a 65 W default TDP, against 105 W for the retail Ryzen 9 5900X, and was sold through system builders rather than as a boxed part.
What are the key specs of the AMD Ryzen 9 5900?
Cores: 12 · Threads: 24 · Boost clock: 4.7 GHz · Socket: AM4
What are the closest alternatives to the AMD Ryzen 9 5900?
Its closest rivals on InnoReviews are AMD Ryzen 9 5900X, AMD Ryzen 7 7700, AMD Ryzen 5 7600X3D — open the comparison pages for a spec-by-spec breakdown.
