AMD Ryzen 5 8640U vs AMD Ryzen 9 3900X
CPU · Specs Compare
General Parameters
Release Date
Dec 2023
Jul 2019
Manufacturer
AMD
AMD
Type
Laptop
Desktop
Instruction Set
x86-64
x86-64
Core Architecture
Hawk Point
Zen 2
Integrated Graphics
Radeon 760M
N/A
Generation
Ryzen 5 (Zen 4 (Hawk Point))
—
Package
Transistor Count
25 billions
3.8 billions
Manufacturing Process
4 nm
7 nm
Socket
FP7
AM4
Power Consumption
15-30 W
105 W
Peak Operating Temperature
100°C
95 °C
Foundry
TSMC
—
Die Size
178 mm²
—
Package
FP8, FP7, FP7r2
—
CPU Performance
Performance Cores
6
12
Performance Core Threads
12
24
Performance Core Base Frequency
3.5 GHz
3.8 GHz
Performance Core Turbo Frequency
4.9 GHz
4.6 GHz
Total Core Count
6
12
Total Thread Count
12
24
Bus Frequency
100 MHz
100 MHz
Multiplier
35x
38x
L1 Cache
64 K per core
64 K per core
L2 Cache
1 MB per core
512 K per core
L3 Cache
16 MB shared
64 MB shared
Unlocked Multiplier
No
Yes
SMP
1
—
Memory Parameters
Memory Types
DDR5-5600, LPDDR5x-7500
DDR4-3200
Max Memory Size
256 GB
128 GB
Max Memory Channels
2
2
Max Memory Bandwidth
89.6 GB/s
47.68 GB/s
ECC Memory Support
No
Yes
Graphics Card Parameters
Integrated Graphics
true
—
GPU Base Frequency
1500 MHz
—
GPU Max Dynamic Frequency
2600 MHz
—
Shader Units
384
—
Texture Units
24
—
Raster Operation Units
16
—
Execution Units
6
—
Power Consumption
15 W
—
Miscellaneous
PCIe Version
4.0
4.0
PCIe Lanes
20
16
Benchmark
Cinebench R23
1,780
1,306
Cinebench R23
11,267
18,454
Geekbench 6
2,419
1,842
Geekbench 6
10,350
11,715
Geekbench 5
—
1,319
Geekbench 5
—
11,991
Cinebench 2024
—
78
Cinebench 2024
—
1,068
Passmark CPU
—
2,683
Passmark CPU
—
32,531
▲ Specs Compare
Data sourced from official specifications and benchmark tests.