Ultra 7 155U vs Ryzen 9 3950X

Place in the ranking	205	733
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	16.85	no data
Market segment	Desktop processor	Laptop
Series	AMD Ryzen 9	Intel Meteor Lake-U
Power efficiency	21.98	66.63
Architecture codename	Matisse (Zen 2) (2019−2020)	Meteor Lake-P (2023)
Release date	11 June 2019 (5 years ago)	14 December 2023 (less than a year ago)
Launch price (MSRP)	$799	$490

Cost-effectiveness evaluation

Performance per price, higher is better.

no data

Detailed specifications

Ryzen 9 3950X and Core Ultra 7 155U 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)	12 (Dodeca-Core)
Threads	32	14
Base clock speed	3.5 GHz	1.7 GHz
Boost clock speed	4.7 GHz	4.8 GHz
L1 cache	1 MB	112 KB (per core)
L2 cache	8 MB	2 MB (per core)
L3 cache	64 MB	12 MB (shared)
Chip lithography	7 nm, 12 nm	Intel 4 nm
Die size	2 x 72 mm + 125 mm (IO-Die) mm²	no data
Maximum core temperature	no data	110 °C
Number of transistors	19,200 million	no data
64 bit support	+	+
Windows 11 compatibility	+	no data
Unlocked multiplier	+	-

Compatibility

Information on Ryzen 9 3950X and Core Ultra 7 155U 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	FCBGA2049
Power consumption (TDP)	105 Watt	15 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Ryzen 9 3950X and Core Ultra 7 155U. 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	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2
AES-NI	+	+
AVX	+	+
vPro	no data	+
Enhanced SpeedStep (EIST)	no data	+
Speed Shift	no data	+
Hyper-Threading Technology	no data	+
TSX	-	+
Thermal Monitoring	-	+
Flex Memory Access	no data	+
Turbo Boost Max 3.0	no data	-
Precision Boost 2	+	no data
Deep Learning Boost	-	+
Supported AI Software Frameworks	-	OpenVINO™, WindowsML, ONNX RT

Security technologies

Ryzen 9 3950X and Core Ultra 7 155U technologies aimed at improving security, for example, by protecting against hacks.

TXT	no data	+
EDB	no data	+
Secure Key	no data	+
OS Guard	no data	+

Virtualization technologies

Virtual machine speed-up technologies supported by Ryzen 9 3950X and Core Ultra 7 155U are enumerated here.

AMD-V	+	-
VT-d	no data	+
VT-x	no data	+
EPT	no data	+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Ryzen 9 3950X and Core Ultra 7 155U. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4 Dual-channel	DDR5
Maximum memory size	128 GB	96 GB
Max memory channels	no data	2
Maximum memory bandwidth	51.196 GB/s	no data
ECC memory support	+	-

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	-	Intel® Graphics
Quick Sync Video	-	+
Graphics max frequency	-	1.95 GHz

Graphics interfaces

Available interfaces and connections of Ryzen 9 3950X and Core Ultra 7 155U integrated GPUs.

Number of displays supported

Graphics image quality

Maximum display resolutions supported by Ryzen 9 3950X and Core Ultra 7 155U integrated GPUs, including resolutions over different interfaces.

Max resolution over HDMI 1.4	-	4096 x 2304 @ 60Hz (HDMI 2.1 TMDS) 7680 x 4320 @ 60Hz (HDMI2.1 FRL)
Max resolution over eDP	-	3840x2400 @ 120Hz
Max resolution over DisplayPort	-	7680 x 4320 @ 60Hz

Graphics API support

APIs supported by Ryzen 9 3950X and Core Ultra 7 155U integrated GPUs, sometimes API versions are included.

DirectX	-	12.2
OpenGL	-	4.6

Peripherals

Specifications and connection of peripherals supported by Ryzen 9 3950X and Core Ultra 7 155U.

PCIe version	no data	4.0
PCI Express lanes	no data	12
PCI support	no data	4.0

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 24.85
+131%

Ultra 7 155U 10.76

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 38743
+131%

Ultra 7 155U 16774

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
+166%

Ultra 7 155U 1505

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

Ultra 7 155U 235
+12.4%