Intel Atom C3858 vs Intel Core i9-14900T

Last updated:
cpumonkey @ x @cpumonkey

CPU comparison with benchmarks


Intel Atom C3858 CPU1 vs CPU2 Intel Core i9-14900T
Intel Atom C3858 Intel Core i9-14900T

CPU comparison

Intel Atom C3858 or Intel Core i9-14900T - which processor is faster? In this comparison we look at the differences and analyze which of these two CPUs is better. We compare the technical data and benchmark results.

The Intel Atom C3858 has 12 cores with 12 threads and clocks with a maximum frequency of 2.00 GHz. Up to 256 GB of memory is supported in 2 memory channels. The Intel Atom C3858 was released in Q3/2017.

The Intel Core i9-14900T has 24 cores with 32 threads and clocks with a maximum frequency of 5.50 GHz. The CPU supports up to 192 GB of memory in 2 memory channels. The Intel Core i9-14900T was released in Q1/2024.
Intel Atom (108) Family Intel Core i9 (78)
Intel Atom C3000 (20) CPU group Intel Core i 14000 (23)
5 Generation 14
Denverton Architecture Raptor Lake S Refresh
Desktop / Server Segment Desktop / Server
-- Predecessor Intel Core i9-13900T
-- Successor --

CPU Cores and Base Frequency

The Intel Atom C3858 is a 12 core processor with a clock frequency of 2.00 GHz. The Intel Core i9-14900T has 24 CPU cores with a clock frequency of 1.10 GHz (5.50 GHz).
Intel Atom C3858 Characteristic Intel Core i9-14900T
12 Cores 24
12 Threads 32
normal Core architecture hybrid (big.LITTLE)
No Hyperthreading Yes
No Overclocking ? No
2.00 GHz A-Core 1.10 GHz (5.50 GHz)
8x Raptor Cove
-- B-Core 0.80 GHz (4.00 GHz)
16x Gracemont

NPU AI performance

The performance values of the processor's AI unit. The isolated NPU performance is specified here, the total AI performance (NPU+CPU+iGPU) can be higher. Processors with support for artificial intelligence (AI) and machine learning (ML) can process many calculations, especially audio, image and video processing, much faster than classic processors.
Intel Atom C3858 Characteristic Intel Core i9-14900T
-- AI hardware --
-- AI specifications --
-- NPU + CPU + iGPU --

Integrated graphics (iGPU)

The integrated graphics unit of a processor is not only responsible for the pure image output on the system, but can also significantly increase the efficiency of the system with the support of modern video codecs.
no iGPU GPU Intel UHD Graphics 770
GPU frequency 0.30 GHz
-- GPU (Turbo) 1.65 GHz
-- GPU Generation 11
Technology 10 nm
Max. displays 3
-- Compute units 32
-- Shader 256
No Hardware Raytracing No
No Frame Generation No
-- Max. GPU Memory 64 GB
-- DirectX Version 12

Hardware codec support

A photo or video codec that is accelerated in hardware can greatly accelerate the working speed of a processor and extend the battery life of notebooks or smartphones when playing videos.
no iGPU GPU Intel UHD Graphics 770
No Codec h265 / HEVC (8 bit) Decode / Encode
No Codec h265 / HEVC (10 bit) Decode / Encode
No Codec h264 Decode / Encode
No Codec VP9 Decode / Encode
No Codec VP8 Decode / Encode
No Codec AV1 Decode
No Codec AVC Decode / Encode
No Codec VC-1 Decode
No Codec JPEG Decode / Encode

Memory & PCIe

The Intel Atom C3858 supports a maximum of 256 GB of memory in 2 memory channels. The Intel Core i9-14900T can connect up to 192 GB of memory in 2 memory channels.
Intel Atom C3858 Characteristic Intel Core i9-14900T
DDR4-2400 Memory DDR5-5600, DDR4-3200
256 GB Max. Memory 192 GB
2 (Dual Channel) Memory channels 2 (Dual Channel)
38.4 GB/s Max. Bandwidth 89.6 GB/s
Yes ECC Yes
12.00 MB L2 Cache 32.00 MB
-- L3 Cache 36.00 MB
3.0 PCIe version 5.0
16 PCIe lanes 20
15.8 GB/s PCIe Bandwidth 78.8 GB/s

Thermal Management

The TDP (Thermal Design Power) of a processor specifies the required cooling solution. The Intel Atom C3858 has a TDP of 25 W, that of the Intel Core i9-14900T is 35 W.
Intel Atom C3858 Characteristic Intel Core i9-14900T
25 W TDP (PL1 / PBP) 35 W
-- TDP (PL2) 106 W
-- TDP up --
-- TDP down --
100 °C Tjunction max. 100 °C

Technical details

The Intel Atom C3858 has a 12.00 MB cache, while the Intel Core i9-14900T cache has a total of 68.00 MB.
Intel Atom C3858 Characteristic Intel Core i9-14900T
14 nm Technology 10 nm
Monolithic Chip design Monolithic
x86-64 (64 bit) Instruction set (ISA) x86-64 (64 bit)
SSE4.1, SSE4.2 ISA extensions SSE4.1, SSE4.2, AVX2, AVX2+
BGA 1310 Socket LGA 1700
VT-x, VT-x EPT, VT-d Virtualization VT-x, VT-x EPT, VT-d
Yes AES-NI Yes
Windows 10, Linux Operating systems Windows 10, Windows 11, Linux
Q3/2017 Release date Q1/2024
332 $ Release price --
show more data show more data


Rate these processors

Here you can rate the Intel Atom C3858 to help other visitors make their purchasing decisions. The average rating is 0 stars (0 ratings). Rate now:
Here you can rate the Intel Core i9-14900T to help other visitors make their purchasing decisions. The average rating is 5.0 stars (1 ratings). Rate now:


iGPU - FP32 Performance (Single-precision GFLOPS)

The theoretical computing performance of the internal graphics unit of the processor with simple accuracy (32 bit) in GFLOPS. GFLOPS indicates how many billion floating point operations the iGPU can perform per second.
Intel Atom C3858 Intel Atom C3858
@ 0.00 GHz
0 (0%)
Intel Core i9-14900T Intel Core i9-14900T
Intel UHD Graphics 770 @ 1.65 GHz
846 (100%)

Devices using this processor
Intel Atom C3858 Intel Core i9-14900T
Unknown Unknown

Popular comparisons containing this CPUs

1. Intel Core i9-14900TIntel Core i9-14900K Intel Core i9-14900T vs Intel Core i9-14900K
2. Intel Core i9-13900TIntel Core i9-14900T Intel Core i9-13900T vs Intel Core i9-14900T
3. Intel Core i9-14900Intel Core i9-14900T Intel Core i9-14900 vs Intel Core i9-14900T
4. Intel Atom C3858Intel Xeon Gold 6312U Intel Atom C3858 vs Intel Xeon Gold 6312U
5. Intel Atom C3858Intel Atom C3958 Intel Atom C3858 vs Intel Atom C3958
6. Intel Core i7-3820QMIntel Atom C3858 Intel Core i7-3820QM vs Intel Atom C3858
7. Intel Celeron J4005Intel Atom C3858 Intel Celeron J4005 vs Intel Atom C3858
8. AMD A8-7650KIntel Atom C3858 AMD A8-7650K vs Intel Atom C3858
9. Intel Core i9-14900TIntel Core i7-14700T Intel Core i9-14900T vs Intel Core i7-14700T
10. Intel Atom C3858Samsung Exynos 7884 Intel Atom C3858 vs Samsung Exynos 7884


back to index