i7-1255U vs Ryzen 9 3950X

Primary details

Comparing Ryzen 9 3950X and Core i7-1255U processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	210	895
Place by popularity	not in top-100	74
Cost-effectiveness evaluation	18.76	no data
Market segment	Desktop processor	Laptop
Series	AMD Ryzen 9	Intel Alder Lake-M
Power efficiency	21.96	53.82
Architecture codename	Matisse (Zen 2) (2019−2020)	Alder Lake-U (2022)
Release date	11 June 2019 (5 years ago)	23 February 2022 (2 years ago)
Launch price (MSRP)	$799	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Ryzen 9 3950X and Core i7-1255U 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)	10 (Deca-Core)
Threads	32	12
Base clock speed	3.5 GHz	1.7 GHz
Boost clock speed	4.7 GHz	4.7 GHz
L1 cache	1 MB	80K (per core)
L2 cache	8 MB	1.25 MB (per core)
L3 cache	64 MB	12 MB (shared)
Chip lithography	7 nm, 12 nm	Intel 7 nm
Die size	2 x 72 mm + 125 mm (IO-Die) mm2	no data
Maximum core temperature	no data	100 °C
Number of transistors	19,200 million	no data
64 bit support	+	+
Windows 11 compatibility	+	+
Unlocked multiplier	+	-

Compatibility

Information on Ryzen 9 3950X and Core i7-1255U 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	FCBGA1744
Power consumption (TDP)	105 Watt	15 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Ryzen 9 3950X and Core i7-1255U. 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	+	+
FMA	-	+
AVX	+	+
Enhanced SpeedStep (EIST)	no data	+
Speed Shift	no data	+
Hyper-Threading Technology	no data	+
TSX	-	+
Thermal Monitoring	-	+
Flex Memory Access	no data	+
Precision Boost 2	+	no data
Deep Learning Boost	-	+

Security technologies

Ryzen 9 3950X and Core i7-1255U 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 i7-1255U 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 i7-1255U. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4 Dual-channel	DDR4, DDR5
Maximum memory size	128 GB	64 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® Iris® Xe Graphics eligible
Quick Sync Video	-	+
Graphics max frequency	-	1.25 GHz
Execution Units	-	96

Graphics interfaces

Available interfaces and connections of Ryzen 9 3950X and Core i7-1255U integrated GPUs.

Number of displays supported

-

4

Graphics image quality

Maximum display resolutions supported by Ryzen 9 3950X and Core i7-1255U integrated GPUs, including resolutions over different interfaces.

Max resolution over HDMI 1.4	-	4096 x 2304 @ 60Hz
Max resolution over eDP	-	4096 x 2304 @ 120Hz
Max resolution over DisplayPort	-	7680 x 4320 @ 60Hz

Graphics API support

APIs supported by Ryzen 9 3950X and Core i7-1255U integrated GPUs, sometimes API versions are included.

DirectX	-	12.1
OpenGL	-	4.6

Peripherals

Specifications and connection of peripherals supported by Ryzen 9 3950X and Core i7-1255U.

PCIe version	no data	4.0
PCI Express lanes	no data	20

Synthetic benchmark performance

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

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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.

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Pros & cons summary

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Performance score	24.37	8.53
Recency	11 June 2019	23 February 2022
Physical cores	16	10
Threads	32	12
Power consumption (TDP)	105 Watt	15 Watt

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Should you still have questions on choice between Ryzen 9 3950X and Core i7-1255U, ask them in Comments section, and we shall answer.

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