Intel Atom C2538 vs Intel Celeron 3965Y

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CPU comparison with benchmarks


Intel Atom C2538 CPU1 vs CPU2 Intel Celeron 3965Y
Intel Atom C2538 Intel Celeron 3965Y

CPU comparison

Intel Atom C2538 or Intel Celeron 3965Y - 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 C2538 has 4 cores with 4 threads and clocks with a maximum frequency of 2.40 GHz. Up to 64 GB of memory is supported in 2 memory channels. The Intel Atom C2538 was released in Q3/2013.

The Intel Celeron 3965Y has 2 cores with 2 threads and clocks with a maximum frequency of 1.50 GHz. The CPU supports up to 16 GB of memory in 2 memory channels. The Intel Celeron 3965Y was released in Q2/2017.
Intel Atom (108) Family Intel Celeron (165)
Intel Atom C2000 (7) CPU group Intel Celeron 3000 (10)
3 Generation 7
Avoton Architecture Kaby Lake U
Desktop / Server Segment Mobile
-- Predecessor --
-- Successor --

CPU Cores and Base Frequency

The Intel Atom C2538 is a 4 core processor with a clock frequency of 2.40 GHz. The Intel Celeron 3965Y has 2 CPU cores with a clock frequency of 1.50 GHz.
Intel Atom C2538 Characteristic Intel Celeron 3965Y
4 Cores 2
4 Threads 2
normal Core architecture normal
No Hyperthreading No
No Overclocking ? No
2.40 GHz Frequency 1.50 GHz
-- Turbo Frequency (1 Core) --
-- Turbo Frequency (All Cores) --

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 C2538 Characteristic Intel Celeron 3965Y
-- 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 HD Graphics 615
GPU frequency 0.30 GHz
-- GPU (Turbo) 0.85 GHz
-- GPU Generation 9.5
Technology 14nm
Max. displays 3
-- Compute units 24
-- Shader 192
No Hardware Raytracing No
No Frame Generation No
-- Max. GPU Memory 16 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 HD Graphics 615
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 No
No Codec AVC Decode / Encode
No Codec VC-1 Decode
No Codec JPEG Decode / Encode

Memory & PCIe

The Intel Atom C2538 supports a maximum of 64 GB of memory in 2 memory channels. The Intel Celeron 3965Y can connect up to 16 GB of memory in 2 memory channels.
Intel Atom C2538 Characteristic Intel Celeron 3965Y
DDR3L-1600, DDR3-1600 Memory LPDDR3-1866, DDR3L-1600
64 GB Max. Memory 16 GB
2 (Dual Channel) Memory channels 2 (Dual Channel)
25.6 GB/s Max. Bandwidth 25.6 GB/s
Yes ECC No
2.00 MB L2 Cache --
-- L3 Cache 2.00 MB
2.0 PCIe version 3.0
16 PCIe lanes 10
8.0 GB/s PCIe Bandwidth 9.9 GB/s

Thermal Management

The TDP (Thermal Design Power) of a processor specifies the required cooling solution. The Intel Atom C2538 has a TDP of 15 W, that of the Intel Celeron 3965Y is 6 W.
Intel Atom C2538 Characteristic Intel Celeron 3965Y
15 W TDP (PL1 / PBP) 6 W
-- TDP (PL2) --
-- TDP up --
-- TDP down 4.5 W
-- Tjunction max. 100 °C

Technical details

The Intel Atom C2538 has a 2.00 MB cache, while the Intel Celeron 3965Y cache has a total of 2.00 MB.
Intel Atom C2538 Characteristic Intel Celeron 3965Y
22 nm Technology 14 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
BGA 1283 Socket BGA 1515
VT-x, VT-x EPT Virtualization VT-x, VT-x EPT, VT-d
Yes AES-NI Yes
Windows 10, Linux Operating systems Windows 10, Linux
Q3/2013 Release date Q2/2017
104 $ Release price 107 $
show more data show more data


Rate these processors

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Average performance in benchmarks

⌀ Single core performance in 1 CPU benchmarks
Intel Atom C2538 (63%)
Intel Celeron 3965Y (100%)
⌀ Multi core performance in 2 CPU benchmarks
Intel Atom C2538 (91%)
Intel Celeron 3965Y (93%)

Geekbench 5, 64bit (Single-Core)

Geekbench 5 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
Intel Atom C2538 Intel Atom C2538
4C 4T @ 2.40 GHz
236 (63%)
Intel Celeron 3965Y Intel Celeron 3965Y
2C 2T @ 1.50 GHz
372 (100%)

Geekbench 5, 64bit (Multi-Core)

Geekbench 5 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
Intel Atom C2538 Intel Atom C2538
4C 4T @ 2.40 GHz
827 (100%)
Intel Celeron 3965Y Intel Celeron 3965Y
2C 2T @ 1.50 GHz
708 (86%)

Estimated results for PassMark CPU Mark

Some of the CPUs listed below have been benchmarked by CPU-monkey. However the majority of CPUs have not been tested and the results have been estimated by a CPU-monkey’s secret proprietary formula. As such they do not accurately reflect the actual Passmark CPU mark values and are not endorsed by PassMark Software Pty Ltd.
Intel Atom C2538 Intel Atom C2538
4C 4T @ 2.40 GHz
960 (81%)
Intel Celeron 3965Y Intel Celeron 3965Y
2C 2T @ 1.50 GHz
1182 (100%)

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 C2538 Intel Atom C2538
@ 0.00 GHz
0 (0%)
Intel Celeron 3965Y Intel Celeron 3965Y
Intel HD Graphics 615 @ 0.85 GHz
326 (100%)

Devices using this processor
Intel Atom C2538 Intel Celeron 3965Y
Unknown Unknown

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