Report an Error

AMD Ryzen 9 3900XT

105 W
3.9 GHz
4.7 GHz
Matisse 2
Socket AM4
AMD Socket AM4
AMD Socket AM4
The AMD Ryzen 9 3900XT is a desktop processor with 12 cores, launched in July 2020. It is part of the Ryzen 9 lineup, using the Zen 2 (Matisse) architecture with Socket AM4. Thanks to AMD Simultaneous Multithreading (SMT) the core-count is effectively doubled, to 24 threads. Ryzen 9 3900XT has 64MB of L3 cache and operates at 3.9 GHz by default, but can boost up to 4.7 GHz, depending on the workload. AMD is making the Ryzen 9 3900XT on a 7 nm production node using 3,800 million transistors. The silicon die of the chip is not fabricated at AMD, but at the foundry of TSMC. You may freely adjust the unlocked multiplier on Ryzen 9 3900XT, which simplifies overclocking greatly, as you can easily dial in any overclocking frequency.
With a TDP of 105 W, the Ryzen 9 3900XT consumes a good deal of power, so decent cooling is needed. AMD's processor supports DDR4 memory with adual-channel interface. The highest officially supported memory speed is 3200 MHz, but with overclocking (and the right memory modules) you can go even higher. For communication with other components in the system, Ryzen 9 3900XT uses a PCI-Express Gen 4 connection. This processor does not have integrated graphics, you will need a separate graphics card.
Hardware virtualization is available on the Ryzen 9 3900XT, which greatly improves virtual machine performance. Programs using Advanced Vector Extensions (AVX) can run on this processor, boosting performance for calculation-heavy applications. Besides AVX, AMD is including the newer AVX2 standard, too, but not AVX-512.


Socket: AMD Socket AM4
Foundry: TSMC
Process Size: 7 nm
Transistors: 3,800 million
Die Size: 74 mm²
Package: µOPGA-1331
tCaseMax: 95°C


Frequency: 3.9 GHz
Turbo Clock: up to 4.7 GHz
Base Clock: 100 MHz
Multiplier: 39.0x
Multiplier Unlocked: Yes
TDP: 105 W
FP32: 2,707.2 GFLOPS


Market: Desktop
Production Status: Active
Release Date: Jul 7th, 2020
Codename: Matisse 2
Generation: Ryzen 9
(Zen 2 (Matisse))
Part#: unknown
Memory Support: DDR4-3200 MHz
ECC Memory: No
PCI-Express: Gen 4


# of Cores: 12
# of Threads: 24
SMP # CPUs: 1
Integrated Graphics: N/A


Cache L1: 64K (per core)
Cache L2: 512K (per core)
Cache L3: 64MB


  • MMX
  • SSE
  • SSE2
  • SSE3
  • SSSE3
  • SSE4A
  • SSE4.1
  • SSE4.2
  • AES
  • AVX
  • AVX2
  • BMI1
  • BMI2
  • SHA
  • F16C
  • FMA3
  • AMD64
  • EVP
  • AMD-V
  • SMAP
  • SMEP
  • SMT
  • Precision Boost 2
  • XFR 2


This processor comes with an unlocked base clock multiplier, allowing users to set the multiplier value higher than shipped value, to facilitate better overclocking.