AMD
AMD Ryzen 9 3900XT
The Ryzen 9 3900XT is a 12-core, 24-thread Zen 2 desktop processor for AM4 with a 3.8 GHz base clock, up to 4.7 GHz boost, 64 MB of L3 cache and a 105 W TDP. It is a higher-boost refresh of the Ryzen 9 3900X, supports PCIe 4.0 and ships without a cooler.
Pros
- 12 cores and 24 threads on the AM4 socket
- Up to 4.7 GHz boost, 100 MHz above the Ryzen 9 3900X
- 64 MB of L3 cache
- PCIe 4.0 support with dual-channel DDR4 up to 3200 MT/s
- Unlocked for overclocking
Cons
- No cooler in the box; AMD recommends a 280 mm AIO or equivalent air cooler
- No integrated graphics, so a discrete graphics card is required
- 105 W TDP, a higher power budget than 65 W parts
- Only a small boost-clock step over the Ryzen 9 3900X
Average
Computed from specs & benchmarks via our public methodology.
Full specifications
Everything we track for the AMD Ryzen 9 3900XT
General
- Announced
- 2020
- Socket
- AM4
- Process
- 7 nm
- Base TDP
- 105 W
- Unlocked multiplier
- Yes
- Cooler included
- No
Cores & Clocks
- Cores
- 12
- Threads
- 24
- Base clock
- 3.8 GHz
- Boost clock
- 4.7 GHz
- L2 cache
- 6 MB
- L3 cache
- 64 MB
Memory
- Memory support
- DDR4-3200
- Memory channels
- 2
Platform
- PCIe version
- 4
Benchmarks
- PassMark
- 32,456Top 32%
- PassMark (single thread)
- 2,742Bottom 33%
Quick answers
Is the AMD Ryzen 9 3900XT good in 2026?
The AMD Ryzen 9 3900XT earns an Inno Score of 56.8/100 (“Average”) based on its specs and benchmark results. The Ryzen 9 3900XT is a 12-core, 24-thread Zen 2 desktop processor for AM4 with a 3.8 GHz base clock, up to 4.7 GHz boost, 64 MB of L3 cache and a 105 W TDP. It is a higher-boost refresh of the Ryzen 9 3900X, supports PCIe 4.0 and ships without a cooler.
What are the key specs of the AMD Ryzen 9 3900XT?
Cores: 12 · Threads: 24 · Boost clock: 4.7 GHz · Socket: AM4
What are the closest alternatives to the AMD Ryzen 9 3900XT?
Its closest rivals on InnoReviews are AMD Ryzen 7 8700F, AMD Ryzen 7 8700G, Intel Core i5-12600KF — open the comparison pages for a spec-by-spec breakdown.
