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AMD Ryzen Threadripper 3990X vs Qualcomm QCM6490

Last updated: 2026-07-04

Table of Contents

Summary
Benchmarks
Specifications
User Reviews
Popular Comparisons

Summary

Benchmarks

Performance Overview
Average performance across multiple benchmarks

Single-core performance

Rank 1 - 100 %

AMD Ryzen Threadripper 3990X

Rank 2 - 69 %

Qualcomm QCM6490

Multi-core performance

Rank 1 - 100 %

AMD Ryzen Threadripper 3990X

Rank 2 - 13 %

Qualcomm QCM6490

Geekbench 6 Single-Core
Single-core performance

64C / 128T · 4.30 GHz

1,639

8C / 8T · 2.71 GHz

1,097

Geekbench 6 Multi-Core
Multi-core performance

64C / 128T · 3.20 GHz

15,832

8C / 8T · 2.71 GHz

2,745

Geekbench 5, 64bit Single-Core
Single-core performance

64C / 128T · 4.30 GHz

1,219

8C / 8T · 2.71 GHz

869

Geekbench 5, 64bit Multi-Core
Multi-core performance

64C / 128T · 3.20 GHz

34,670

8C / 8T · 2.71 GHz

2,705

More benchmarks

Cinebench 2024 (SC)
427 entries

Cinebench 2024 (MC)
422 entries

Cinebench R23 (SC)
690 entries

Cinebench R23 (MC)
665 entries

Geekbench 6 (SC)
1,989 entries

Geekbench 6 (MC)
1,927 entries

Cinebench R20 (SC)
666 entries

Geekbench 5 (SC)
2,512 entries

Cinebench R20 (MC)
615 entries

Geekbench 5 (MC)
2,483 entries

FP32 SP (iGPU)
2,219 entries

AnTuTu 10 Benchmark
25 entries

Blender 3.1 Benchmark
213 entries

PassMark CPU-Mark
2,504 entries

Blender 2.81 (bmw27)
190 entries

CPU-Z Benchmark 17 (MC)
751 entries

Monero Hashrate
94 entries

V-Ray CPU-Render
251 entries

Cinebench R15 (SC)
1,113 entries

Cinebench R15 (MC)
1,110 entries

Specifications

At a glance

Wischen	AMD Ryzen Threadripper 3990X	Qualcomm QCM6490
Family	AMD Ryzen Threadripper (16)	Qualcomm Snapdragon (105)
CPU group	AMD Ryzen Threadripper 3000 (3)	Qualcomm QCM6490 (1)
Architecture	Castle Peak (Zen 2)	Kryo 670
Technology	7 nm	6 nm
Segment	Desktop	Smartphone / Tablet
Socket	TRX4 (sTRX4)
Predecessor	AMD Ryzen Threadripper 2990WX
Successor

CPU Cores and Base Frequency

Wischen	AMD Ryzen Threadripper 3990X	Qualcomm QCM6490
CPU Cores / Threads	64 / 128	8 / 8
Hyperthreading / SMT	✓	✗
Core architecture	normal	hybrid (Prime / big.LITTLE)
Core Cluster 1:	64x 2.90 - 4.30 GHz	1x Cortex-A78 2.71 GHz
Core Cluster 2:		3x Cortex-A78 2.40 GHz
L2-Cache	32.00 MB
L3-Cache	256.00 MB
Overclocking	✓	✗

Integrated graphics (iGPU)

Wischen	AMD Ryzen Threadripper 3990X	Qualcomm QCM6490
GPU name	no iGPU	Qualcomm Adreno 643L
GPU frequency		0.81 - 0.81 GHz
CUs / Shader	/	/ 768
Raytracing	✗	✗
Max. displays		1
Max. GPU Memory
Technology		6 nm
Release date		Q4/2022

NPU AI performance

Wischen	AMD Ryzen Threadripper 3990X	Qualcomm QCM6490
AI hardware		Qualcomm AI engine
AI specifications
NPU + CPU + iGPU

Memory & PCIe

Wischen	AMD Ryzen Threadripper 3990X	Qualcomm QCM6490
Memory	DDR4-3200 (51.2 GB/s)	LPDDR5-6400 (44.0 GB/s) LPDDR4X-4266 (34.1 GB/s)
Max. Memory	2048 GB
Memory channels	4	2
ECC	Yes	No
PCIe	4.0 x 64
PCIe Bandwidth	126.0 GB/s

Thermal Management

Wischen	AMD Ryzen Threadripper 3990X	Qualcomm QCM6490
TDP	280 W
TDP (PL2)
TDP up
TDP down
T. junction max.	95 °C

Technical details

Wischen	AMD Ryzen Threadripper 3990X	Qualcomm QCM6490
Chip design	Chiplet	Chiplet
AES-NI	✓	✗
Operating systems	Windows 10, Windows 11, Linux	Android
Instruction set	x86-64 (64 bit)	Armv8-A (64 bit)
ISA extensions	SSE4a, SSE4.1, SSE4.2, AVX2, FMA3
Release date	Q1/2020	Q4/2021
Release price	3990 $
Documents	Technical data sheet	Technical data sheet

User Reviews

Your rating

Here you can rate one or both of the processors. The average rating of AMD Ryzen Threadripper 3990X is 4.6 stars (12 ratings), while Qualcomm QCM6490 has received 4.4 stars (15 ratings).

Click on the stars to rate one or both processors.

AMD Ryzen Threadripper 3990X
64C / 128T · 2.90 - 4.30 GHz

★★★★★

Qualcomm QCM6490
8C / 8T · 2.71 GHz

★★★★★