Intel Core i5-520UM vs Intel Atom C3850

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CPU comparison with benchmarks


Intel Core i5-520UM CPU1 vs CPU2 Intel Atom C3850
Intel Core i5-520UM Intel Atom C3850

CPU comparison

Intel Core i5-520UM or Intel Atom C3850 - 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 Core i5-520UM has 2 cores with 4 threads and clocks with a maximum frequency of 1.87 GHz. Up to 8 GB of memory is supported in 2 memory channels. The Intel Core i5-520UM was released in Q1/2010.

The Intel Atom C3850 has 12 cores with 12 threads and clocks with a maximum frequency of 2.40 GHz. The CPU supports up to 256 GB of memory in 2 memory channels. The Intel Atom C3850 was released in Q3/2017.
Intel Core i5 (331) Family Intel Atom (108)
Intel Core i5 500 (3) CPU group Intel Atom C3000 (20)
1 Generation 5
Arrandale Architecture Denverton
Mobile Segment Desktop / Server
-- Predecessor --
-- Successor --

CPU Cores and Base Frequency

The Intel Core i5-520UM has 2 CPU cores and can calculate 4 threads in parallel. The clock frequency of the Intel Core i5-520UM is 1.07 GHz (1.87 GHz) while the Intel Atom C3850 has 12 CPU cores and 12 threads can calculate simultaneously. The clock frequency of the Intel Atom C3850 is at 2.10 GHz (2.40 GHz).
Intel Core i5-520UM Characteristic Intel Atom C3850
2 Cores 12
4 Threads 12
normal Core architecture normal
Yes Hyperthreading No
No Overclocking ? No
1.07 GHz Frequency 2.10 GHz
1.87 GHz Turbo Frequency (1 Core) 2.40 GHz
-- Turbo Frequency (All Cores) 2.40 GHz

Artificial Intelligence and Machine Learning

Processors with the support of artificial intelligence (AI) and machine learning (ML) can process many calculations, especially audio, image and video processing, much faster than classic processors. Algorithms for ML improve their performance the more data they have collected via software. ML tasks can be processed up to 10,000 times faster than with a classic processor.
Intel Core i5-520UM Characteristic Intel Atom C3850
-- AI hardware --
-- AI specifications --

Internal Graphics

The Intel Core i5-520UM or Intel Atom C3850 has integrated graphics, called iGPU for short. The iGPU uses the system's main memory as graphics memory and sits on the processor's die.
Intel HD Graphics (Westmere) GPU no iGPU
0.50 GHz GPU frequency --
0.73 GHz GPU (Turbo) --
5 GPU Generation --
32 nm Technology
2 Max. displays
12 Compute units --
24 Shader --
No Hardware Raytracing No
No Frame Generation No
2 GB Max. GPU Memory --
10.1 DirectX Version --

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.
Intel HD Graphics (Westmere) GPU no iGPU
No Codec h265 / HEVC (8 bit) No
No Codec h265 / HEVC (10 bit) No
Decode Codec h264 No
No Codec VP9 No
No Codec VP8 No
No Codec AV1 No
Decode Codec AVC No
No Codec VC-1 No
No Codec JPEG No

Memory & PCIe

The Intel Core i5-520UM can use up to 8 GB of memory in 2 memory channels. The maximum memory bandwidth is 12.8 GB/s. The Intel Atom C3850 supports up to 256 GB of memory in 2 memory channels and achieves a memory bandwidth of up to 38.4 GB/s.
Intel Core i5-520UM Characteristic Intel Atom C3850
DDR3-800 Memory DDR4-2400
8 GB Max. Memory 256 GB
2 (Dual Channel) Memory channels 2 (Dual Channel)
12.8 GB/s Max. Bandwidth 38.4 GB/s
No ECC Yes
3.00 MB L2 Cache 12.00 MB
-- L3 Cache --
2.0 PCIe version 3.0
16 PCIe lanes 16
8.0 GB/s PCIe Bandwidth 15.8 GB/s

Thermal Management

The thermal design power (TDP for short) of the Intel Core i5-520UM is 18 W, while the Intel Atom C3850 has a TDP of 25 W. The TDP specifies the necessary cooling solution that is required to cool the processor sufficiently.
Intel Core i5-520UM Characteristic Intel Atom C3850
18 W TDP (PL1 / PBP) 25 W
-- TDP (PL2) --
-- TDP up --
-- TDP down --
105 °C Tjunction max. 100 °C

Technical details

The Intel Core i5-520UM is manufactured in 32 nm and has 3.00 MB cache. The Intel Atom C3850 is manufactured in 14 nm and has a 12.00 MB cache.
Intel Core i5-520UM Characteristic Intel Atom C3850
32 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 1288 Socket BGA 1310
VT-x, VT-x EPT, VT-d Virtualization VT-x, VT-x EPT, VT-d
Yes AES-NI Yes
Windows, Linux Operating systems Windows 10, Linux
Q1/2010 Release date Q3/2017
-- Release price 323 $
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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 Core i5-520UM Intel Core i5-520UM
Intel HD Graphics (Westmere) @ 0.73 GHz
35 (100%)
Intel Atom C3850 Intel Atom C3850
@ 0.00 GHz
0 (0%)

Devices using this processor
Intel Core i5-520UM Intel Atom C3850
Unknown Unknown

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