Intel Atom Z2420 vs AMD RX-421BD

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CPU comparison with benchmarks


Intel Atom Z2420 CPU1 vs CPU2 AMD RX-421BD
Intel Atom Z2420 AMD RX-421BD

CPU comparison

Intel Atom Z2420 or AMD RX-421BD - 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 Z2420 has 1 cores with 2 threads and clocks with a maximum frequency of 1.20 GHz. Up to 1 GB of memory is supported in 2 memory channels. The Intel Atom Z2420 was released in Q1/2013.

The AMD RX-421BD has 4 cores with 4 threads and clocks with a maximum frequency of 3.40 GHz. The CPU supports up to GB of memory in 2 memory channels. The AMD RX-421BD was released in Q4/2015.
Intel Atom (108) Family AMD R (6)
Intel Atom Z2400/Z2600 (2) CPU group AMD RX 1st Gen. (6)
3 Generation 1
Penwell Architecture Merlin Falcon (Excavator)
Mobile Segment Mobile
-- Predecessor --
-- Successor --

CPU Cores and Base Frequency

The Intel Atom Z2420 has 1 CPU cores and can calculate 2 threads in parallel. The clock frequency of the Intel Atom Z2420 is 1.20 GHz while the AMD RX-421BD has 4 CPU cores and 4 threads can calculate simultaneously. The clock frequency of the AMD RX-421BD is at 2.10 GHz (3.40 GHz).
Intel Atom Z2420 Characteristic AMD RX-421BD
1 Cores 4
2 Threads 4
normal Core architecture normal
Yes Hyperthreading No
No Overclocking ? No
1.20 GHz Frequency 2.10 GHz
-- Turbo Frequency (1 Core) 3.40 GHz
-- 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 Atom Z2420 Characteristic AMD RX-421BD
-- AI hardware --
-- AI specifications --

Internal Graphics

The Intel Atom Z2420 or AMD RX-421BD 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.
PowerVR SGX540 GPU AMD Radeon R7 - 512 (Merlin Falcon)
0.40 GHz GPU frequency 0.80 GHz
-- GPU (Turbo) --
-- GPU Generation 3
45nm Technology 28
1 Max. displays 3
1 Compute units 8
-- Shader 512
No Hardware Raytracing No
No Frame Generation No
-- Max. GPU Memory 2 GB
10.1 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.
PowerVR SGX540 GPU AMD Radeon R7 - 512 (Merlin Falcon)
No Codec h265 / HEVC (8 bit) Decode
No Codec h265 / HEVC (10 bit) No
No Codec h264 Decode / Encode
No Codec VP9 No
No Codec VP8 No
No Codec AV1 No
No Codec AVC No
No Codec VC-1 No
No Codec JPEG Decode

Memory & PCIe

The Intel Atom Z2420 can use up to 1 GB of memory in 2 memory channels. The maximum memory bandwidth is 6.4 GB/s. The AMD RX-421BD supports up to GB of memory in 2 memory channels and achieves a memory bandwidth of up to 38.4 GB/s.
Intel Atom Z2420 Characteristic AMD RX-421BD
LPDDR2-800 Memory DDR4-2400, DDR3-2133
1 GB Max. Memory
2 (Dual Channel) Memory channels 2 (Dual Channel)
6.4 GB/s Max. Bandwidth 38.4 GB/s
No ECC Yes
0.50 MB L2 Cache 2.00 MB
-- L3 Cache --
-- PCIe version 3.0
-- PCIe lanes 12
-- PCIe Bandwidth 11.8 GB/s

Thermal Management

The thermal design power (TDP for short) of the Intel Atom Z2420 is 3 W, while the AMD RX-421BD has a TDP of 35 W. The TDP specifies the necessary cooling solution that is required to cool the processor sufficiently.
Intel Atom Z2420 Characteristic AMD RX-421BD
3 W TDP (PL1 / PBP) 35 W
-- TDP (PL2) --
-- TDP up --
-- TDP down 12 W
90 °C Tjunction max. 90 °C

Technical details

The Intel Atom Z2420 is manufactured in 32 nm and has 0.50 MB cache. The AMD RX-421BD is manufactured in 28 nm and has a 2.00 MB cache.
Intel Atom Z2420 Characteristic AMD RX-421BD
32 nm Technology 28 nm
Monolithic Chip design Unknown
x86-64 (64 bit) Instruction set (ISA) x86-64 (64 bit)
MMX, SSE3, SSSE3 ISA extensions SSE4a, SSE4.1, SSE4.2, AVX, FMA3, FMA4
BGA 617 Socket FP4
None Virtualization AMD-V, AMD-Vt
No AES-NI Yes
Operating systems
Q1/2013 Release date Q4/2015
-- Release price --
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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 Atom Z2420 Intel Atom Z2420
PowerVR SGX540 @ 0.40 GHz
6 (1%)
AMD RX-421BD AMD RX-421BD
AMD Radeon R7 - 512 (Merlin Falcon) @ 0.80 GHz
820 (100%)

Devices using this processor
Intel Atom Z2420 AMD RX-421BD
Unknown Unknown

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