i5-12400 vs Atom C3955

VS

Aggregate performance score

Atom C3955
2017
16 cores / 16 threads, 32 Watt
3.62
Core i5-12400
2022
6 cores / 12 threads, 65 Watt
12.07
+233%

Core i5-12400 outperforms Atom C3955 by a whopping 233% based on our aggregate benchmark results.

Primary details

Comparing Atom C3955 and Core i5-12400 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking1502641
Place by popularitynot in top-10080
Cost-effectiveness evaluation0.91no data
Market segmentServerDesktop processor
SeriesIntel Atomno data
Power efficiency10.7717.67
Architecture codenameGoldmont (2016−2017)Alder Lake-S (2022)
Release date15 August 2017 (7 years ago)4 January 2022 (3 years ago)
Launch price (MSRP)$434no data

Cost-effectiveness evaluation

Performance per price, higher is better.

no data

Detailed specifications

Atom C3955 and Core i5-12400 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 cores16 (Hexadeca-Core)6 (Hexa-Core)
Threads1612
Base clock speed2.1 GHz2.5 GHz
Boost clock speed2.4 GHz4.4 GHz
Multiplier21no data
L1 cache896 KB80K (per core)
L2 cache16 MB1.25 MB (per core)
L3 cache16 MB18 MB (shared)
Chip lithography14 nm10 nm
Die sizeno data163 mm2
Maximum core temperature78 °Cno data
64 bit support++
Windows 11 compatibility-+

Compatibility

Information on Atom C3955 and Core i5-12400 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 configuration1 (Uniprocessor)1
SocketFCBGA13101700
Power consumption (TDP)32 Watt65 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Atom C3955 and Core i5-12400. You'll probably need this information if you require some particular technology.

AES-NI++
AVX-+
Enhanced SpeedStep (EIST)++
QuickAssist-no data
Turbo Boost Technology2.0no data
Hyper-Threading Technology-no data
TSX-+

Security technologies

Atom C3955 and Core i5-12400 technologies aimed at improving security, for example, by protecting against hacks.

TXTno data+
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 C3955 and Core i5-12400 are enumerated here.

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

Memory specs

Types, maximum amount and channel quantity of RAM supported by Atom C3955 and Core i5-12400. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR4: 2400DDR4, DDR5 Dual-channel
Maximum memory size256 GBno data
Max memory channels2no data
Maximum memory bandwidth38.397 GB/sno data
ECC memory support+-

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardno dataIntel UHD Graphics 730

Peripherals

Specifications and connection of peripherals supported by Atom C3955 and Core i5-12400.

PCIe version35.0
PCI Express lanes1620
USB revision3no data
Total number of SATA ports16no data
Max number of SATA 6 Gb/s Ports16no data
Number of USB ports8no data
Integrated LAN4x10/2.5/1 GBEno 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.


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.

Atom C3955 3.62
i5-12400 12.07
+233%

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.

Atom C3955 5803
i5-12400 19338
+233%

Gaming performance

Pros & cons summary


Performance score 3.62 12.07
Recency 15 August 2017 4 January 2022
Physical cores 16 6
Threads 16 12
Chip lithography 14 nm 10 nm
Power consumption (TDP) 32 Watt 65 Watt

Atom C3955 has 166.7% more physical cores and 33.3% more threads, and 103.1% lower power consumption.

i5-12400, on the other hand, has a 233.4% higher aggregate performance score, an age advantage of 4 years, and a 40% more advanced lithography process.

The Core i5-12400 is our recommended choice as it beats the Atom C3955 in performance tests.

Be aware that Atom C3955 is a server/workstation processor while Core i5-12400 is a desktop one.


Should you still have questions on choice between Atom C3955 and Core i5-12400, ask them in Comments section, and we shall answer.

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Intel Atom C3955
Atom C3955
Intel Core i5-12400
Core i5-12400

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Community ratings

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Questions & comments

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