AMD · Threadripper

Ryzen Threadripper 3990X

Released February 2020

A 64-core Zen 2 desktop processor for sTRX4, with quad-channel DDR4 memory, 256 MB L3 cache and PCIe 4.0.

Cores: 64/128
Boost: 4.3 GHz
L3: 256 MB
Power: 280 W
Socket: sTRX4

Unlocked

What reviewers say

Reviewers found exceptional rendering performance when software could use all sixty-four cores, with more consistent behaviour than the 2990WX. Many applications could not use the extra threads effectively, making the 3970X or 3960X better value for broader workloads. The expensive platform and substantial power demands, especially with overclocking, suited specialist professional workstations.

From techspot.com and tweaktown.com

Specifications

Report a wrong or missing spec

Cores and clocks

Cores: 64
Threads: 128
Base clock: 2.9 GHz
Boost clock: 4.3 GHz
L3 cache: 256 MB
Cores: Castle Peak; Zen 2 architecture; boxed product ID 100-100000163WOF. Supports TRX40 motherboards. AMD confirms worldwide on-shelf availability on 7 February 2020, after its 6 January announcement.
Clocks: Precision Boost 2; maximum boost up to 4.3 GHz; unlocked for overclocking
Cache: L1 4096 KB; L2 32 MB; the advertised 288 MB combined cache includes L2 and L3

Graphics and AI

Built-in graphics: No
Graphics: A separate graphics card is required

Platform

Socket: sTRX4
Base power: 280 W
Unlocked: Yes
Cooler in the box: No
Memory support: DDR4 UDIMM; four channels; maximum 256 GB. Up to 3200 MT/s with four single-rank or dual-rank DIMMs, or 2933 MT/s with eight single-rank DIMMs. ECC requires motherboard support.
PCIe: PCIe 4.0; 64 native lanes, 56 usable, plus 16 usable lanes from TRX40. AMD's launch table lists 88 combined processor/chipset lanes, 72 usable.
Process: CPU cores: TSMC 7 nm FinFET; I/O die: Globalfoundries 12 nm
Cooler: Cooler not included; AMD recommends liquid cooling. Maximum operating temperature 95°C.

Pros and cons

Pros

Sixty-four cores and 128 threads
Quad-channel memory with ECC support
PCIe 4.0 expansion support

Cons

280 W TDP
Requires a TRX40 motherboard
Cooler sold separately

Closest rivals

Model	Cores	Boost	L3	Power	Socket	Released
AMDRyzen Threadripper PRO 5995WX	64/128	4.5 GHz	256 MB	280 W	sWRX8	Mar 2022
AMDRyzen Threadripper 7980X	64/128	5.1 GHz	256 MB	350 W	sTR5	Nov 2023
AMDRyzen Threadripper PRO 7985WX	64/128	5.1 GHz	256 MB	350 W	sTR5	Nov 2023

Newer model: Ryzen Threadripper 7980X.

Sources

Spot a mistake? Tell us