AMD® Ryzen™ Threadripper 3990X

The AMD Ryzen Threadripper 3990X is a desktop processor with 64 cores and 128 threads, built on the Zen 2 architecture (7 nm process). It launched in Jan 2020. Clocks run from 2.9 GHz base to 4.3 GHz boost. A 256-MB L3 cache backs the cores (4.6 MB per core). Maximum addressable memory is 256 GB. The chip drops into the sTRX4 socket and exposes PCIe 4.0 (64 lanes). Rated TDP is 280 W. Notable platform capabilities: AVX-512, AMD-V (Hardware Virtualization), AMD SEV.

The AMD Ryzen Threadripper 3990X scores 2,559 in single-core performance and 79,707 in multi-core performance (PassMark CPU Mark ratings). From those two ratings Feex computes 14,282 for overall performance, 55,392 for productivity performance, 48,445 for creator performance, 111,590 for engineering performance and 27,604 for gaming performance. Its multi-core throughput works out to 1,245 per core, 623 per thread and 285 per watt. Its computed efficiency index is 854. Its performance index is 177, so its overall performance is 77% above the Intel Core i5-12400 (index 100). Each bar shows the score as a share of a reference ceiling, which is the larger of the 99th-percentile score across the Feex CPU database and a fixed baseline.

Scores for individual PassMark CPU Mark test categories. Higher is better. These are measured test scores, not computed from the single-core and multi-core ratings.

In the individual workload tests the AMD Ryzen Threadripper 3990X scores 493,626 in integer math, 282,969 in floating-point math, 1,934,611 in compression, 130,157 in cryptography, 2,946 in physics simulation, 116,435 in vector SIMD, 421 in the prime sieve and 186,489 in sorting. Higher is better. Compared with the Intel Core i5-12400, it is 738% above in integer math, 517% above in floating-point math, 748% above in compression, 1,033% above in cryptography, 170% above in physics simulation, 651% above in vector SIMD, 528% above in the prime sieve and 723% above in sorting. Each bar shows the score as a share of that workload's reference ceiling, the larger of the 99th-percentile score across CPUs with a recorded value and a fixed baseline.

The AMD Ryzen Threadripper 3990X has 64 physical cores and runs 128 logical threads. It runs 2 threads per core. It runs at a base clock of 2.90 GHz and boosts up to 4.30 GHz.

The AMD Ryzen Threadripper 3990X is a desktop processor, belongs to the AMD Threadripper family, uses the Zen 2 architecture, carries the codename Castle Peak and is manufactured on a 7 nm process. It launched in Jan 2020.

The AMD Ryzen Threadripper 3990X has 4 MB of L1 cache, 32 MB of L2 cache and 256 MB of L3 cache. That adds up to about 292.0 MB of cache, or 4.56 MB per core. Each core has 512 KB of private L2 cache.

The AMD Ryzen Threadripper 3990X has a 3-level cache hierarchy: L1 at 4 MB, L2 at 32 MB and L3 at 256 MB. L3 is the largest level and makes up about 88% of the cache listed here.

The AMD Ryzen Threadripper 3990X addresses up to 256 GB of memory and uses 4 memory channels.

The AMD Ryzen Threadripper 3990X does not include integrated graphics, so a discrete graphics card is required for display output.

The AMD Ryzen Threadripper 3990X uses the sTRX4 socket, supports PCI Express 4.0 and provides up to 64 PCIe lanes.

The AMD Ryzen Threadripper 3990X has a rated TDP of 280 W.

Instruction sets, security, virtualization, AI acceleration and OS readiness. Features are listed as supported, explicitly not supported, or not recorded; a feature that is not recorded is not the same as unsupported.

The AMD Ryzen Threadripper 3990X is manufactured by TSMC. It launched at a price of $3,990.

The AMD Ryzen Threadripper 3990X is also identified by the model number 3990X and the SKU 100-000000163.

After an audit, 3 values were corrected and 1 empty field was filled on the AMD Ryzen Threadripper 3990X record. Each change is listed with its old value, new value, rule and sources.

• L3 cache (total): 128 MB → 256 MB. Rule: Two independent sources agree. PassMark and Wikipedia agree with each other and contradict stored; no vendor fact. Sources: PassMark: AMD Ryzen Threadripper 3990X; Wikipedia: List of AMD Ryzen processors (revision 1376710910).
• L2 cache (total): 512 KB → 32,768 KB. Rule: L2 cache was stored per core. stored equals the per-core size in PassMark "64 x 512 KB". Sources: PassMark: AMD Ryzen Threadripper 3990X; Wikipedia: List of AMD Ryzen processors (revision 1376710910).
• Architecture: Zen → Zen 2. Rule: Codename or architecture from two sources. Wikipedia section "(... Zen 2 based)" + cpu_monkey "Castle Peak (Zen 2)". Sources: Wikipedia: List of AMD Ryzen processors (revision 1376710910).

The audit log is public: all changes for this CPU, the corrections overview and the method.

Feex has recorded 56% of the specifications it tracks for the AMD Ryzen Threadripper 3990X. Values Feex does not hold are shown as "Not recorded" rather than estimated.

Not recorded: Core Configuration: Efficiency Cores, Hybrid Architecture, All-Core Boost and Unlocked Multiplier. Architecture & Generation: ISA Family and Market Status. Cache: L4 Cache. Memory Support: Memory Bandwidth, DDR5 Support, DDR4 Support, LPDDR Support, ECC Memory and Max Memory Speed. Platform & Compatibility: Package and Package Size. Power & Thermals: Base Power, Maximum Turbo Power, Configurable TDP (Min), Configurable TDP (Max), Max Junction Temperature and Tcase. Physical & Manufacturing: Transistor Count, Die Size and Die Count. Naming & Aliases: Processor Number and Part Number.

Processors close to the AMD Ryzen Threadripper 3990X in the Feex database, matched by socket, family, segment, architecture, core count, TDP and benchmark scores, include AMD Ryzen Threadripper 3970X, AMD Ryzen Threadripper 3960X, AMD Ryzen Threadripper 7960X, AMD Ryzen Threadripper 9980X and AMD Ryzen Threadripper 7980X.