18score
#105 of 555
Overall rank
Ryzen 9 3900
12 cores · 24 threads · up to 4.3 GHz on AM4.
As an Amazon Associate we may earn from qualifying purchases.
Cores
12
Threads
24
Boost
4.3 GHz
L3 cache
64 MB
TDP
65W
Socket
AM4
Performance breakdown
Gaming18
Productivity17
Single-core17
Multi-core50
Power efficiency18
Lab scores
Performance score18
Cores12
Threads24
Boost clock (GHz)4.3 GHz
Estimated gaming FPS
Paired with a high-end GPU. CPU impact is largest at 1080p.
1080p40 fps
1440p32 fps
4K22 fps
Full specifications
Processor & cores
- Architecture
- Matisse (Zen 2)
- Process node
- 7 nm
- Socket
- AM4
- Release year
- 2019
- Total cores
- 12
- Threads
- 24
Clocks & cache
- Base clock
- 3.1 GHz
- Boost clock
- 4.3 GHz
- L1 cache
- 768 KB
- L2 cache
- 6 MB
- L3 cache
- 64 MB
Memory & platform
- Memory support
- DDR4-3200
- Max capacity
- 128 GB
- Channels
- 2
- Max bandwidth
- 51.196 GB/s
- Base power (TDP)
- 65W
- PCIe
- PCIe 4.0
- Launch price
- $499
Technologies
- Instruction sets
- 86x MMX(+), SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, SSE4A, -64, -V, AES, AVX, AVX2, FMA3, SHA, Precision Boost 2
- Extensions
- AES-NI, AVX, AMD-V, Precision Boost 2
Community Feedback
What Owners Say
Owners love the excellent multi-core performance for productivity without the high power draw. The main gripe is that it runs hotter than expected with the stock cooler.
Pros
- Idles cool and nearly silent.
- Twelve cores run any workload.
- Surprisingly low power for performance.
- AM4 drop-in upgrade for many.
Cons
- Not a gaming-focused chip
- Slower than the X variant
- Limited overclocking potential
Verdict
Our verdict on the Ryzen 9 3900
The AMD Ryzen 9 3900 is a 12-core CPU that runs cool on modest power, but its lower clocks make it slower than the 3900X.
Get it if you need a ton of cores for heavy multitasking or compiling but are on a strict power budget. Skip it if you game, as cheaper chips offer better single-core speed for gaming performance.
Buy it if…
- You need serious multi-core grunt without the heat and noise of a high-watt chip.
- You're building a quiet workstation for heavy video editing or 3D rendering.
- You want an upgrade on an older AM4 board without swapping your power supply.
Leaderboard
Its place in the overall top
4.7
81 votes
Rate this CPU
Add your verdict
Keep exploring