Ryzen 7 5800U vs Ryzen 9 3950X

Place in the ranking	210	678
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	18.77	no data
Market segment	Desktop processor	Laptop
Series	AMD Ryzen 9	AMD Cezanne (Zen 3, Ryzen 5000)
Power efficiency	21.98	73.04
Architecture codename	Matisse (Zen 2) (2019−2020)	Cezanne-U (Zen 3) (2021)
Release date	14 November 2019 (5 years ago)	12 January 2021 (3 years ago)
Launch price (MSRP)	$799	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

no data

Detailed specifications

Ryzen 9 3950X and Ryzen 7 5800U basic parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters indirectly say of CPU speed, though for more precise assessment you have to consider their test results.

Physical cores	16 (Hexadeca-Core)	8 (Octa-Core)
Threads	32	16
Base clock speed	3.5 GHz	1.9 GHz
Boost clock speed	4.7 GHz	4.4 GHz
Multiplier	no data	19
L1 cache	96K (per core)	64K (per core)
L2 cache	512K (per core)	512K (per core)
L3 cache	64 MB	16 MB (shared)
Chip lithography	7 nm, 12 nm	7 nm
Die size	2 x 72 mm + 125 mm (IO-Die) mm²	180 mm²
Maximum core temperature	no data	105 °C
Number of transistors	19,200 million	10,700 million
64 bit support	+	+
Windows 11 compatibility	+	+
Unlocked multiplier	+	-

Compatibility

Information on Ryzen 9 3950X and Ryzen 7 5800U compatibility with other computer components: motherboard (look for socket type), power supply unit (look for power consumption) etc. Useful when planning a future computer configuration or upgrading an existing one. Note that power consumption of some processors can well exceed their nominal TDP, even without overclocking. Some can even double their declared thermals given that the motherboard allows to tune the CPU power parameters.

Number of CPUs in a configuration	1 (Uniprocessor)	1
Socket	AM4	FP6
Power consumption (TDP)	105 Watt	15 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Ryzen 9 3950X and Ryzen 7 5800U. You'll probably need this information if you require some particular technology.

Instruction set extensions	86x MMX(+), SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, SSE4A,-64, AMD-V, AES, AVX, AVX2, FMA3, SHA, Precision Boost 2	MMX, SSE, SSE2, SSE3, SSSE3, SSE4A, SSE4.1, SSE4.2, AVX, AVX2, BMI2, ABM, FMA, ADX, SMEP, SMAP, SMT, CPB, AES-NI, RDRAND, RDSEED, SHA, SME
AES-NI	+	+
FMA	-	+
AVX	+	+
Precision Boost 2	+	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Ryzen 9 3950X and Ryzen 7 5800U are enumerated here.

AMD-V

Memory specs

Types, maximum amount and channel quantity of RAM supported by Ryzen 9 3950X and Ryzen 7 5800U. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4 Dual-channel	DDR4
Maximum memory size	128 GB	no data
Maximum memory bandwidth	51.196 GB/s	no data
ECC memory support	+	-

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

AMD Radeon RX Vega 8 (Ryzen 4000/5000) ( - 2000 MHz)

Peripherals

Specifications and connection of peripherals supported by Ryzen 9 3950X and Ryzen 7 5800U.

PCIe version	no data	3.0
PCI Express lanes	no data	8

Synthetic benchmark performance

Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.

Combined synthetic benchmark score

This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.

Ryzen 9 3950X 24.37
+111%

Ryzen 7 5800U 11.57

Passmark

Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance.

Ryzen 9 3950X 38716
+111%

Ryzen 7 5800U 18382

GeekBench 5 Single-Core

GeekBench 5 Single-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses only a single CPU core.

Ryzen 9 3950X 1730
+0.1%

Ryzen 7 5800U 1728

GeekBench 5 Multi-Core

GeekBench 5 Multi-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses all available CPU cores.

Ryzen 9 3950X 10784
+58.7%

Ryzen 7 5800U 6794

Cinebench 10 32-bit single-core

Cinebench R10 is an ancient ray tracing benchmark for processors by Maxon, authors of Cinema 4D. Its single core version uses just one CPU thread to render a futuristic looking motorcycle.

Ryzen 9 3950X 6102
+1%

Ryzen 7 5800U 6039

Cinebench 10 32-bit multi-core

Cinebench Release 10 Multi Core is a variant of Cinebench R10 using all the processor threads. Possible number of threads is limited by 16 in this version.

Ryzen 9 3950X 53396
+99.9%

Ryzen 7 5800U 26711

wPrime 32

wPrime 32M is a math multi-thread processor test, which calculates square roots of first 32 million integer numbers. Its result is measured in seconds, so that the less is benchmark result, the faster the processor.

Ryzen 9 3950X 4.11

Ryzen 7 5800U 4.11

Cinebench 11.5 64-bit multi-core

Cinebench Release 11.5 Multi Core is a variant of Cinebench R11.5 which uses all the processor threads. A maximum of 64 threads is supported in this version.

Ryzen 9 3950X 44
+196%

Ryzen 7 5800U 15

Cinebench 15 64-bit multi-core

Cinebench Release 15 Multi Core is a variant of Cinebench R15 which uses all the processor threads.

Ryzen 9 3950X 4002
+148%

Ryzen 7 5800U 1613

Cinebench 15 64-bit single-core

Cinebench R15 (standing for Release 15) is a benchmark made by Maxon, authors of Cinema 4D. It was superseded by later versions of Cinebench, which use more modern variants of Cinema 4D engine. The Single Core version (sometimes called Single-Thread) only uses a single processor thread to render a room full of reflective spheres and light sources.

Ryzen 9 3950X 209

Ryzen 7 5800U 229
+9.6%

Cinebench 11.5 64-bit single-core

Cinebench R11.5 is an old benchmark by Maxon, authors of Cinema 4D. It was superseded by later versions of Cinebench, which use more modern variants of Cinema 4D engine. The Single Core version loads a single thread with ray tracing to render a glossy room full of crystal spheres and light sources.

Ryzen 9 3950X 2.37

Ryzen 7 5800U 2.7
+13.9%

x264 encoding pass 2

x264 Pass 2 is a slower variant of x264 video compression that produces a variable bit rate output file, which results in better quality since the higher bit rate is used when it is needed more. Benchmark result is still measured in frames per second.

Ryzen 9 3950X 168
+108%

Ryzen 7 5800U 81

x264 encoding pass 1

x264 version 4.0 is a video encoding benchmark uses MPEG 4 x264 compression method to compress a sample HD (720p) video. Pass 1 is a faster variant that produces a constant bit rate output file. Its result is measured in frames per second, which means how many frames of the source video file were encoded per second.

Ryzen 9 3950X 265
+15%

Ryzen 7 5800U 231