AMD Ryzen Threadripper 3990X vs AMD EPYC 7643

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CPU comparison with benchmarks

-VS-

CPU lineage

AMD Ryzen Threadripper 3990X or AMD Ryzen Threadripper 3990X – which processor offers superior performance? In this comparison, we examine disparities and assess which of these two CPUs outperforms the other. We delve into technical specifications and benchmark outcomes.
The AMD Ryzen Threadripper 3990X features 64 processor cores and has the capability to manage 128 threads concurrently.
It was released in Q1/2020 and belongs to the 3 generation of the AMD Ryzen Threadripper series.
To use the AMD Ryzen Threadripper 3990X, you'll need a motherboard with a TRX4 (sTRX4) socket.
The AMD EPYC 7643 features 48 processor cores and has the capability to manage 96 threads concurrently.
It was released in Q1/2021 and belongs to the 3 generation of the AMD EPYC series.
To use the AMD EPYC 7643, you'll need a motherboard with a SP3 socket.
Desktop / Server Segment Desktop / Server
AMD Ryzen Threadripper 3990X Name AMD EPYC 7643
AMD Ryzen Threadripper Family AMD EPYC
3 Generation 3
AMD Ryzen Threadripper 3000 Group AMD EPYC 7003
 
 

CPU Cores and Base Frequency

The AMD Ryzen Threadripper 3990X has 64 CPU cores and can calculate 128 threads in parallel.
The clock frequency of the AMD Ryzen Threadripper 3990X is 2.9 GHz
and turbo frequency for one core is 4.3 GHz.
The number of CPU cores greatly affects the speed of the processor and is an important performance indicator.
The AMD EPYC 7643 has 48 CPU cores and can calculate 96 threads in parallel.
The clock frequency of the AMD EPYC 7643 is 2.3 GHz
and turbo frequency for one core is 3.6 GHz.
4.3 GHz Turbo Frequency (1 core) 3.6 GHz
Yes Overclocking No
normal Core architecture normal
2.9 GHz Frequency 2.3 GHz
128 Threads 96
Yes Hyperthreading Yes
64 CPU Cores 48
64x Cores 48x Zen 3
 
 

Internal Graphics

The AMD Ryzen Threadripper 3990X does not have integrated graphics.
The AMD EPYC 7643 does not have integrated graphics.
-- GPU frequency --
-- Release date --
-- Direct X --
GPU name
-- Technology --
-- Max. displays --
-- Shaders --
0 bytes Max. GPU Memory 0 bytes
-- Execution units --
-- Generation --
-- GPU (Turbo) --
 
 

Artificial Intelligence and Machine Learning

-- AI specifications --
-- AI hardware --
 
 

Hardware codec support

A photo or video codec that is accelerated in hardware can greatly accelerate the working speed of a processor and extend the battery life of notebooks or smartphones when playing videos.
-- AVC --
-- VC-1 --
-- VP9 --
-- h265 / HEVC (10 bit) --
-- h264 --
-- VP8 --
-- h265 / HEVC (8 bit) --
-- JPEG --
-- AV1 --
 
 

Memory & PCIe

The processor supports a maximum memory capacity of 2.0 TB distributed across 4 memory channels. It offers a peak memory bandwidth of 102.4 GB/s. Both the type and quantity of memory can have a substantial impact on the overall system performance.
The processor supports a maximum memory capacity of 4.0 TB distributed across 8 memory channels. It offers a peak memory bandwidth of 204.8 GB/s. Both the type and quantity of memory can have a substantial impact on the overall system performance.
4 Memory channels 8
2.0 TB Max. Memory 4.0 TB
pci PCIe pci
Yes AES-NI Yes
Yes ECC Yes
102.4 GB/s Bandwidth 204.8 GB/s
DDR4-3200 Memory type DDR4-3200
 
 

Thermal Management

The processor has a thermal design power (TDP) of 280 W watts.
TDP indicates the cooling solution needed to effectively manage the processor's heat. It generally provides an approximate indication of the actual power consumption of the CPU itself.
The processor has a thermal design power (TDP) of 240 W watts.
95 °C Tjunction max --
280 W TDP (PL1 / PBP) 240 W
None TDP down 225 W
 
 

Technical details

The AMD Ryzen Threadripper 3990X is manufactured using a 7 nm process.
A smaller manufacturing process indicates a more contemporary and energy-efficient CPU.
In total, this processor boasts a generous 256.0 MB cache.
A substantial cache can significantly enhance the processor's performance, particularly in scenarios like gaming.
The AMD EPYC 7643 is manufactured using a 7 nm process.
Q1/2020 Release date Q1/2021
-- Part Number --
32.0 MB L2-Cache 0 bytes
AMD-V, SVM Virtualization AMD-V, SVM
SSE4a, SSE4.1, SSE4.2, FMA3, AVX2 ISA extensions SSE4a, SSE4.1, SSE4.2, FMA3, AVX2
Chiplet Chip design Chiplet
Castle Peak (Zen 2) Architecture Milan (Zen 3)
7 nm Technology 7 nm
TRX4 (sTRX4) Socket SP3
Windows 10, Linux, Windows 11 Operating systems Windows 10, Linux
3990 $ Release price 4995 $
Technical data sheet Documents Technical data sheet
x86-64 (64 bit) Instruction set (ISA) x86-64 (64 bit)
256.0 MB L3-Cache 256.0 MB
 
 

Benchmarks

Estimated results for PassMark CPU Mark

AMD Ryzen Threadripper 3990X
64C 128T @ 2.9 GHz
81100
81100
AMD EPYC 7643
48C 96T @ 2.3 GHz
76440
76440

Geekbench 5, 64bit (Multi-Core)

AMD EPYC 7643
48C 96T @ 2.3 GHz
36850
36850
AMD Ryzen Threadripper 3990X
64C 128T @ 2.9 GHz
34670
34670

Geekbench 6 (Multi-Core)

AMD Ryzen Threadripper 3990X
64C 128T @ 2.9 GHz
15832
15832
AMD EPYC 7643
48C 96T @ 2.3 GHz
14987
14987

Geekbench 6 (Single-Core)

AMD EPYC 7643
48C 96T @ 2.3 GHz
1671
1671
AMD Ryzen Threadripper 3990X
64C 128T @ 2.9 GHz
1639
1639

Geekbench 5, 64bit (Single-Core)

AMD EPYC 7643
48C 96T @ 2.3 GHz
1319
1319
AMD Ryzen Threadripper 3990X
64C 128T @ 2.9 GHz
1219
1219