AMD Ryzen 9 4900U vs AMD Ryzen 9 3950X

Last updated:

CPU comparison with benchmarks

-VS-

CPU lineage

AMD Ryzen 9 4900U or AMD Ryzen 9 4900U – 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 9 4900U features 8 processor cores and has the capability to manage 16 threads concurrently.
It was released in Q1/2020 and belongs to the 3 generation of the AMD Ryzen 9 series.
To use the AMD Ryzen 9 4900U, you'll need a motherboard with a FP6 socket.
The AMD Ryzen 9 3950X features 16 processor cores and has the capability to manage 32 threads concurrently.
It was released in Q3/2019 and belongs to the 3 generation of the AMD Ryzen 9 series.
To use the AMD Ryzen 9 3950X, you'll need a motherboard with a AM4 (PGA 1331) socket.
AMD Ryzen 4000U Group AMD Ryzen 3000
3 Generation 3
Mobile Segment Desktop / Server
AMD Ryzen 9 4900U Name AMD Ryzen 9 3950X
AMD Ryzen 9 Family AMD Ryzen 9
 
 

CPU Cores and Base Frequency

The AMD Ryzen 9 4900U has 8 CPU cores and can calculate 16 threads in parallel.
The clock frequency of the AMD Ryzen 9 4900U is 2.0 GHz
and turbo frequency for one core is 4.4 GHz.
The number of CPU cores greatly affects the speed of the processor and is an important performance indicator.
The AMD Ryzen 9 3950X has 16 CPU cores and can calculate 32 threads in parallel.
The clock frequency of the AMD Ryzen 9 3950X is 3.5 GHz
and turbo frequency for one core is 4.7 GHz.
16 Threads 32
8x Cores 16x
8 CPU Cores 16
normal Core architecture normal
Yes Hyperthreading Yes
No Overclocking Yes
4.4 GHz Turbo Frequency (1 core) 4.7 GHz
2.0 GHz Frequency 3.5 GHz
3.4 GHz Turbo Frequency (all cores) None
 
 

Internal Graphics

The AMD Ryzen 9 4900U has integrated graphics, called iGPU for short.
Specifically, the AMD Ryzen 9 4900U uses the AMD Radeon 8 Graphics (Renoir), which has 512 texture shaders
and 8 execution units.
The iGPU uses the system's main memory as graphics memory and sits on the processor's die.
The AMD Ryzen 9 3950X does not have integrated graphics.
512 Shaders --
Q1/2020 Release date --
7 nm Technology --
12 Direct X --
2.0 GB Max. GPU Memory 0 bytes
-- Max. displays --
8 Execution units --
1.75 GHz GPU frequency --
9 Generation --
-- GPU (Turbo) --
AMD Radeon 8 Graphics (Renoir) GPU name
 
 

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.
Decode / Encode VP8 --
Decode VC-1 --
Decode / Encode JPEG --
No AV1 --
Decode / Encode h265 / HEVC (8 bit) --
Decode / Encode AVC --
Decode / Encode h264 --
Decode / Encode VP9 --
Decode / Encode h265 / HEVC (10 bit) --
 
 

Memory & PCIe

The processor supports a maximum memory capacity of 64.0 GB distributed across 2 memory channels. It offers a peak memory bandwidth of 51.2 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 128.0 GB distributed across 2 memory channels. It offers a peak memory bandwidth of 51.2 GB/s. Both the type and quantity of memory can have a substantial impact on the overall system performance.
pci PCIe pci
Yes AES-NI Yes
DDR4-3200, LPDDR4-4266 Memory type DDR4-3200
Yes ECC Yes
64.0 GB Max. Memory 128.0 GB
2 Memory channels 2
51.2 GB/s Bandwidth 51.2 GB/s
 
 

Thermal Management

The processor has a thermal design power (TDP) of 15 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 105 W watts.
None TDP (PL2) 142 W
10 W TDP down None
25 W TDP up None
15 W TDP (PL1 / PBP) 105 W
105 °C Tjunction max 95 °C
 
 

Technical details

The AMD Ryzen 9 4900U 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 8.0 MB cache.
A substantial cache can significantly enhance the processor's performance, particularly in scenarios like gaming.
The AMD Ryzen 9 3950X is manufactured using a 7 nm process.
In total, this processor boasts a generous 64.0 MB cache.
Q1/2020 Release date Q3/2019
AMD-V, SVM Virtualization AMD-V, SVM
SSE4a, SSE4.1, SSE4.2, FMA3, AVX2 ISA extensions SSE4a, SSE4.1, SSE4.2, FMA3, AVX2
7 nm Technology 7 nm
Chiplet Chip design Chiplet
-- Release price 650 $
Renoir (Zen 2) Architecture Matisse (Zen 2)
8.0 MB L3-Cache 64.0 MB
Windows 10, Linux, Windows 11 Operating systems Windows 10, Linux, Windows 11
Technical data sheet Documents Technical data sheet
x86-64 (64 bit) Instruction set (ISA) x86-64 (64 bit)
-- Part Number --
FP6 Socket AM4 (PGA 1331)
0 bytes L2-Cache 0 bytes
 
 

Benchmarks

Geekbench 5, 64bit (Multi-Core)

AMD Ryzen 9 3950X
16C 32T @ 3.5 GHz
14322
14322
AMD Ryzen 9 4900U
8C 16T @ 2.0 GHz
6422
6422

Cinebench R20 (Multi-Core)

AMD Ryzen 9 3950X
16C 32T @ 3.5 GHz
9148
9148
AMD Ryzen 9 4900U
8C 16T @ 2.0 GHz
3292
3292

Cinebench R15 (Multi-Core)

AMD Ryzen 9 3950X
16C 32T @ 3.5 GHz
3897
3897
AMD Ryzen 9 4900U
8C 16T @ 2.0 GHz
1384
1384

Geekbench 5, 64bit (Single-Core)

AMD Ryzen 9 3950X
16C 32T @ 3.5 GHz
1408
1408
AMD Ryzen 9 4900U
8C 16T @ 2.0 GHz
1203
1203

Cinebench R23 (Single-Core)

AMD Ryzen 9 3950X
16C 32T @ 3.5 GHz
1371
1371
AMD Ryzen 9 4900U
8C 16T @ 2.0 GHz
1279
1279

Cinebench R20 (Single-Core)

AMD Ryzen 9 3950X
16C 32T @ 3.5 GHz
531
531
AMD Ryzen 9 4900U
8C 16T @ 2.0 GHz
501
501

AMD Ryzen 9 4900U and AMD Ryzen 9 3950X in leaderboards