Ryzen 9 7940HS vs Atom C3958

Primary details

Comparing Atom C3958 and Ryzen 9 7940HS processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	1748	301
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	0.54	no data
Market segment	Server	Laptop
Series	Intel Atom	no data
Power efficiency	7.54	51.70
Architecture codename	Goldmont (2016−2017)	Phoenix-HS (Zen 4) (2023)
Release date	15 August 2017 (7 years ago)	January 2023 (1 year ago)
Launch price (MSRP)	$449	no data

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Atom C3958 and Ryzen 9 7940HS 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	16	16
Base clock speed	2 GHz	4 GHz
Boost clock speed	2 GHz	5.2 GHz
Multiplier	20	no data
L1 cache	896 KB	64K (per core)
L2 cache	16 MB	1 MB (per core)
L3 cache	16 MB	16 MB (shared)
Chip lithography	14 nm	4 nm
Die size	no data	178 mm2
Maximum core temperature	83 °C	100 °C
Number of transistors	no data	25,000 million
64 bit support	+	+
Windows 11 compatibility	-	+

Compatibility

Information on Atom C3958 and Ryzen 9 7940HS 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	FCBGA1310	FP8
Power consumption (TDP)	31 Watt	35 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Atom C3958 and Ryzen 9 7940HS. You'll probably need this information if you require some particular technology.

Instruction set extensions	no data	Ryzen AI, MMX, SSE, SSE2, SSE3, SSSE3, SSE4A, SSE4.1, SSE4.2, AVX, AVX2, AVX-512, BMI2, ABM, FMA, ADX, SMEP, SMAP, SMT, CPB, AES-NI, RDRAND, RDSEED, SHA, SME
AES-NI	+	+
FMA	-	+
AVX	-	+
Enhanced SpeedStep (EIST)	+	no data
QuickAssist	+	no data
Turbo Boost Technology	-	no data
Hyper-Threading Technology	-	no data
Precision Boost 2	no data	+

Security technologies

Atom C3958 and Ryzen 9 7940HS technologies aimed at improving security, for example, by protecting against hacks.

EDB	+	no data
Secure Boot	+	no data
Secure Key	+	no data
SGX	-	no data
OS Guard	+	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Atom C3958 and Ryzen 9 7940HS 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 Atom C3958 and Ryzen 9 7940HS. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4: 2400	DDR5
Maximum memory size	256 GB	no data
Max memory channels	2	no data
Maximum memory bandwidth	38.397 GB/s	no data
ECC memory support	+	-

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

no data

AMD Radeon 780M

Peripherals

Specifications and connection of peripherals supported by Atom C3958 and Ryzen 9 7940HS.

PCIe version	3	4.0
PCI Express lanes	16	20
USB revision	3	no data
Total number of SATA ports	16	no data
Max number of SATA 6 Gb/s Ports	16	no data
Number of USB ports	8	no data
Integrated LAN	4x10/2.5/1 GBE	no data

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	2.48	19.20
Physical cores	16	8
Chip lithography	14 nm	4 nm
Power consumption (TDP)	31 Watt	35 Watt

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Should you still have questions on choice between Atom C3958 and Ryzen 9 7940HS, ask them in Comments section, and we shall answer.

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