AMD processor

AMD Ryzen 9 3900X

AMD Ryzen 9 3900X is a 12-core, 24-thread desktop processor for Socket AM4, with a 3.8 GHz base clock and up to 4.6 GHz boost.

Ryzen 3000 SeriesAM4Zen 2Desktop

Key Metrics

Architecture
Zen 2
Release
2019-07-07
Cores / threads
12 / 24
Boost
4.6 GHz
L3 cache
64 MB
Memory
DDR4
Power
105 W

AMD Ryzen 9 3900X is an exact Matisse desktop model in the Ryzen 3000 Series. AMD specifies a 105 W default TDP and 3200 MT/s system memory support. It requires separate graphics hardware. Socket matching alone does not establish motherboard firmware support.

Core topology1 row
RoleArchitectureCoresThreads/coreBase MHzBoost MHzCondition
general-purposeamd-zen-212238004600Maximum boost is workload and thermal dependent.
Memory support1 row
StandardMaximum MT/sConditionChannelsECC
DDR43200Official maximum; module population can reduce the supported rate.2
Declared power1 row
TypeWattsProfileNotes
AMD default TDP105defaultVendor specification, not measured whole-system draw.
Integrated graphics1 row
StateModelArchitectureUnitCountBoost MHz
absentDiscrete Graphics Card Required00
Sources and review evidence2 sources

Last reviewed: 2026-09-14. Data confidence: High.