Intel Core i7-620LM vs Intel Atom Z2520

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CPU comparison with benchmarks


Intel Core i7-620LM CPU1 vs CPU2 Intel Atom Z2520
Intel Core i7-620LM Intel Atom Z2520

CPU comparison

Intel Core i7-620LM or Intel Atom Z2520 - 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 i7-620LM has 2 cores with 4 threads and clocks with a maximum frequency of 2.80 GHz. Up to 8 GB of memory is supported in 2 memory channels. The Intel Core i7-620LM was released in Q1/2010.

The Intel Atom Z2520 has 2 cores with 4 threads and clocks with a maximum frequency of 1.20 GHz. The CPU supports up to 2 GB of memory in 2 memory channels. The Intel Atom Z2520 was released in Q2/2013.
Intel Core i7 (298) Family Intel Atom (108)
Intel Core i7 600 (3) CPU group Intel Atom Z2500/Z2700 (3)
1 Generation 2
Arrandale Architecture Cloverview
Mobile Segment Mobile
-- Predecessor --
-- Successor --

CPU Cores and Base Frequency

The Intel Core i7-620LM has 2 CPU cores and can calculate 4 threads in parallel. The clock frequency of the Intel Core i7-620LM is 2.00 GHz (2.80 GHz) while the Intel Atom Z2520 has 2 CPU cores and 4 threads can calculate simultaneously. The clock frequency of the Intel Atom Z2520 is at 1.20 GHz.
Intel Core i7-620LM Characteristic Intel Atom Z2520
2 Cores 2
4 Threads 4
normal Core architecture normal
Yes Hyperthreading Yes
No Overclocking ? No
2.00 GHz Frequency 1.20 GHz
2.80 GHz Turbo Frequency (1 Core) --
-- Turbo Frequency (All Cores) --

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 i7-620LM Characteristic Intel Atom Z2520
-- AI hardware --
-- AI specifications --

Internal Graphics

The Intel Core i7-620LM or Intel Atom Z2520 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 Ironlake (Arrandale) GPU PowerVR SGX544 MP2
0.27 GHz GPU frequency 0.30 GHz
0.57 GHz GPU (Turbo) --
5 GPU Generation --
45 nm Technology 45nm
0 Max. displays 2
12 Compute units 4
-- Shader 8
No Hardware Raytracing No
No Frame Generation No
2 GB Max. GPU Memory --
10.1 DirectX Version 10.1

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 Ironlake (Arrandale) GPU PowerVR SGX544 MP2
No Codec h265 / HEVC (8 bit) No
No Codec h265 / HEVC (10 bit) No
No Codec h264 Decode / Encode
No Codec VP9 No
No Codec VP8 Decode
No Codec AV1 No
No Codec AVC No
No Codec VC-1 No
No Codec JPEG No

Memory & PCIe

The Intel Core i7-620LM can use up to 8 GB of memory in 2 memory channels. The maximum memory bandwidth is 17.1 GB/s. The Intel Atom Z2520 supports up to 2 GB of memory in 2 memory channels and achieves a memory bandwidth of up to 8.5 GB/s.
Intel Core i7-620LM Characteristic Intel Atom Z2520
DDR3-800, DDR3-1066 Memory LPDDR2-1066
8 GB Max. Memory 2 GB
2 (Dual Channel) Memory channels 2 (Dual Channel)
17.1 GB/s Max. Bandwidth 8.5 GB/s
No ECC No
4.00 MB L2 Cache 1.00 MB
-- L3 Cache --
2.0 PCIe version --
16 PCIe lanes --
8.0 GB/s PCIe Bandwidth --

Thermal Management

The thermal design power (TDP for short) of the Intel Core i7-620LM is 25 W, while the Intel Atom Z2520 has a TDP of --. The TDP specifies the necessary cooling solution that is required to cool the processor sufficiently.
Intel Core i7-620LM Characteristic Intel Atom Z2520
25 W TDP (PL1 / PBP) --
-- TDP (PL2) --
-- TDP up --
-- TDP down --
105 °C Tjunction max. 90 °C

Technical details

The Intel Core i7-620LM is manufactured in 32 nm and has 4.00 MB cache. The Intel Atom Z2520 is manufactured in 32 nm and has a 1.00 MB cache.
Intel Core i7-620LM Characteristic Intel Atom Z2520
32 nm Technology 32 nm
Monolithic Chip design Monolithic
x86-64 (64 bit) Instruction set (ISA) x86-64 (64 bit)
SSE4.1, SSE4.2 ISA extensions MMX, SSE3, SSSE3
BGA 1288 Socket BGA
VT-x, VT-x EPT, VT-d Virtualization None
Yes AES-NI No
Windows 10, Linux Operating systems
Q1/2010 Release date Q2/2013
-- Release price --
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Devices using this processor
Intel Core i7-620LM Intel Atom Z2520
Unknown Unknown

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