Core i9-12900K vs Atom C3950

Primary details

Comparing Atom C3950 and Core i9-12900K processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	not rated	163
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	no data	59.12
Market segment	Server	Desktop processor
Series	Intel Atom	Intel Core i9
Architecture codename	Goldmont (2016−2017)	Alder Lake-S (2022)
Release date	15 August 2017 (6 years ago)	4 November 2021 (2 years ago)
Launch price (MSRP)	$389	$589
Current price	no data	$424 (0.7x MSRP)

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Atom C3950 and Core i9-12900K 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)	16 (Hexadeca-Core)
Threads	16	24
Base clock speed	1.7 GHz	3.2 GHz
Boost clock speed	2.2 GHz	5.2 GHz
L1 cache	896 KB	80K (per core)
L2 cache	16 MB	1.25 MB (per core)
L3 cache	16 MB	30 MB (shared)
Chip lithography	14 nm	10 nm
Die size	no data	215.25 mm2"20.5 mm × 10.5 mm
Maximum core temperature	78 °C	100 °C
Maximum case temperature (TCase)	no data	72 °C
64 bit support	+	+
Windows 11 compatibility	-	+
Unlocked multiplier	No	Yes

Compatibility

Information on Atom C3950 and Core i9-12900K 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	1
Socket	FCBGA1310	FCLGA1700
Power consumption (TDP)	24 Watt	125 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Atom C3950 and Core i9-12900K. You'll probably need this information if you require some particular technology.

Instruction set extensions	no data	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2
AES-NI	+	+
AVX	no data	+
vPro	no data	+
Enhanced SpeedStep (EIST)	+	+
QuickAssist	-	no data
Speed Shift	no data	+
Turbo Boost Technology	2.0	2.0
Hyper-Threading Technology	-	+
Idle States	no data	+
Thermal Monitoring	no data	+
SIPP	no data	+
Turbo Boost Max 3.0	no data	+
Status	Launched	Launched

Security technologies

Atom C3950 and Core i9-12900K technologies aimed at improving security, for example, by protecting against hacks.

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

Virtualization technologies

Virtual machine speed-up technologies supported by Atom C3950 and Core i9-12900K are enumerated here.

VT-d	+	+
VT-x	+	+
EPT	+	+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Atom C3950 and Core i9-12900K. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4: 2400	DDR4, DDR5
Maximum memory size	256 GB	128 GB
Max memory channels	2	2
Maximum memory bandwidth	38.397 GB/s	76.8 GB/s
ECC memory support	+	+

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	no data	Intel UHD Graphics 770
Quick Sync Video	no data	+
Clear Video HD	no data	+
Graphics max frequency	no data	1.55 GHz
Execution Units	no data	32

Graphics interfaces

Available interfaces and connections of Atom C3950 and Core i9-12900K integrated GPUs.

Number of displays supported

no data

4

Graphics image quality

Maximum display resolutions supported by Atom C3950 and Core i9-12900K integrated GPUs, including resolutions over different interfaces.

Max resolution over HDMI 1.4	no data	4096 x 2160 @ 60Hz
Max resolution over eDP	no data	5120 x 3200 @ 120Hz
Max resolution over DisplayPort	no data	7680 x 4320 @ 60Hz

Graphics API support

APIs supported by Atom C3950 and Core i9-12900K integrated GPUs, sometimes API versions are included.

DirectX	no data	12
OpenGL	no data	4.5

Peripherals

Specifications and connection of peripherals supported by Atom C3950 and Core i9-12900K.

PCIe version	3	5.0 and 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	2x10/2.5/1 GBE + 2x1 GBE	no data

Pros & cons summary

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Recency	15 August 2017	4 November 2021
Threads	16	24
Cost	$389	$589
Chip lithography	14 nm	10 nm
Power consumption (TDP)	24 Watt	125 Watt

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