Skip to content

AMD Ryzen Threadripper 3990X

Desktop CPUAMD

Also called amd ryzen threadripper 3990x, ryzen threadripper 3990x, 3990x, ryzen-threadripper-3990x

AMDDesktop CPUZen

AMD Threadripper desktop processor on Zen, with 64 cores and 128 threads and 512 KB L2, 128 MB L3 at 280 W TDP on a 7 nm process addressing up to 256 GB and no integrated graphics.

What you need to know

AMD Ryzen Threadripper 3990X is a aging desktop cpu.

AMD Ryzen Threadripper 3990X launched in January 10, 2020., It has 64 cores and 128 threads on Zen, dropping into the sTRX4 socket. Treat the spec table as the facts. Age alone does not tell you to throw it out.

Still good?
Yes, for lighter work
Product age
6 years old
Upgrade pressure
Moderate
Feex says
This SKU has no picture of its own. If the machine has no discrete GPU, a black screen after install is expected, not a dead CPU.

What this hardware means today

Age and usefulness are not the same number. This page keeps them separate.

Performance today
Good. Good for the class when RAM, storage, and the GPU keep up.
Product age 6 years old
Aging. Launched January 10, 2020. Newer platforms exist. That does not make this chip unusable by itself.
Support status
Supported. Current Windows and current applications still run on this class of CPU. Platform BIOS support depends on the motherboard or laptop vendor.
Upgrade pressure
Moderate. Upgrade pressure comes from platform features and specific CPU-bound work, not from the chip being unusable.

Where does it sit?

Zen sits on AMD's recent Zen desktop and laptop timeline. Later chips keep the brand and change the core.

Zen 2
Zen 3
Zen 4
Zen 5

Performance context

These are qualitative readings, not a fake 8.7 out of 10. Workload still wins.

Gaming: Good

Playable in lighter titles. A weak GPU will hide whatever this chip still has.

Productivity: Good

64 cores cover office, browser, and compile work in this class.

Multithreaded workloads: Very Good

128 threads. Heavy encodes still scale further on higher-core parts.

General use: Excellent

Everyday Windows use is not where most people notice this SKU first.

Efficiency: Average

Rated 280 W base power. That is a platform number, not a promise about your cooler.

Should you upgrade?

Probably not based on CPU performance alone.

Upgrade makes more sense if

  • Your workload is strongly CPU limited
  • You need a newer platform for memory, I/O, or chipset features
  • You need substantially more multicore performance
  • You need newer connectivity that your current board cannot offer

Upgrade makes less sense if

  • The GPU is the real bottleneck
  • Current applications are already responsive
  • The CPU rarely limits your workload

Specifications

Figures below follow the Feex Hardware Database record for this SKU. Fields without a recorded value are omitted.

Processor

AMD Ryzen Threadripper 3990X is built on Zen using a 7 nm process.

AMD Ryzen Threadripper 3990X specifications: Processor
Manufacturer AMD
Family Threadripper
Architecture Zen
Codename Castle Peak
Generation 3
Manufacturing process 7 nm
Segment Desktop

Cores and threads

AMD Ryzen Threadripper 3990X has 64 cores and 128 threads.

AMD Ryzen Threadripper 3990X specifications: Cores and threads
Cores 64
P-cores 64
Threads 128

Clock speeds

Base clock is 2.9 GHz. Boost reaches 4.3 GHz.

AMD Ryzen Threadripper 3990X specifications: Clock speeds
Base frequency 2.9 GHz
Max boost 4.3 GHz

Cache

Cache on this sheet is 128 MB L3.

AMD Ryzen Threadripper 3990X specifications: Cache
L2 cache 512 KB
L3 cache 128 MB
Total cache 128.5 MB

Memory

AMD Ryzen Threadripper 3990X addresses 256 GB across 4 memory channels.

AMD Ryzen Threadripper 3990X specifications: Memory
Max capacity 256 GB
Channels 4

Package and power

AMD Ryzen Threadripper 3990X uses the sTRX4 socket and a 280 W TDP.

AMD Ryzen Threadripper 3990X specifications: Package and power
Socket sTRX4
TDP 280 W
PCIe Revision 4.0, 64 lanes

Integrated graphics

AMD Ryzen Threadripper 3990X does not include integrated graphics.

AMD Ryzen Threadripper 3990X specifications: Integrated graphics
Integrated graphics None

Market

AMD Ryzen Threadripper 3990X launched January 10, 2020.

AMD Ryzen Threadripper 3990X specifications: Market
Launch date January 10, 2020
Model 3990X

Features

AMD Ryzen Threadripper 3990X records 34 instruction sets on this sheet.

AMD Ryzen Threadripper 3990X specifications: Features
Instruction sets AES-NIAVX-512AVX2AVXFMASHA64-bit (x86-64)BMI1BMI2CLMULF16CPCLMULQDQRDRANDRDSEEDSSE4.1SSE4.2x86-64-v3ABMADXCMPXCHG16BFXSRInvariant TSCLZCNTPOPCNTRDTSCPSSESSE2SSE3SSSE3x86-64-v2XSAVEXSAVEOPTMMXMOVBE
Security AMD SEVAMD SME
Virtualization AMD SVMAMD-V (Hardware Virtualization)NPT / RVIIOMMU
OS capabilities Docker / Hyper-V readyLinux KVM readyWindows 11 eligibleAndroid emulator readyWSL2 ready

Independent scores

These are PassMark CPU figures. They are not Feex measurements.

AMD Ryzen Threadripper 3990X specifications: Independent scores
Single-core score 2,559
Multi-core score 79,707
Overall score 14,282
Productivity score 55,392
Creator score 48,445
Engineering score 111,590
Gaming score 27,604
Performance per watt 284.7

Compatibility

Compatibility
Socket sTRX4
Board A shared socket is not automatic compatibility. Check the motherboard CPU list and BIOS revision.
Memory up to 256 GB
Graphics Requires a discrete GPU. This SKU has no iGPU.

A shared socket is not automatic compatibility. Boards often need a BIOS update before a newer chip in the same socket will post.

Cooler clearance, VRM quality, and power limits matter as much as the socket name.

Do not expect a display from the motherboard video ports. This SKU has no integrated graphics.

No display after install

This SKU has no integrated graphics. A machine with no discrete GPU will not show a picture. That is expected, not a dead CPU.

Sources and verification

Reviewed by Feex editorial. Last verified August 2026 Status: Partially Verified. How we research.

Was this article useful?

A yes or no is enough. Pick a reason if you want, or add a short note.

Was this article useful?