Intel Atom C3338R vs AMD RX-421BD

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CPU comparison with benchmarks


Intel Atom C3338R CPU1 vs CPU2 AMD RX-421BD
Intel Atom C3338R AMD RX-421BD

CPU comparison

Intel Atom C3338R 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 C3338R has 2 cores with 2 threads and clocks with a maximum frequency of 2.20 GHz. Up to 128 GB of memory is supported in 1 memory channels. The Intel Atom C3338R was released in Q2/2020.

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 C3000 (20) CPU group AMD RX 1st Gen. (6)
5 Generation 1
Denverton Architecture Merlin Falcon (Excavator)
Desktop / Server Segment Mobile
-- Predecessor --
-- Successor --

CPU Cores and Base Frequency

The Intel Atom C3338R is a 2 core processor with a clock frequency of 1.80 GHz (2.20 GHz). The AMD RX-421BD has 4 CPU cores with a clock frequency of 2.10 GHz (3.40 GHz).
Intel Atom C3338R Characteristic AMD RX-421BD
2 Cores 4
2 Threads 4
normal Core architecture normal
No Hyperthreading No
No Overclocking ? No
1.80 GHz Frequency 2.10 GHz
2.20 GHz Turbo Frequency (1 Core) 3.40 GHz
2.00 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 C3338R Characteristic AMD RX-421BD
-- AI hardware --
-- AI specifications --

Internal Graphics

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 AMD Radeon R7 - 512 (Merlin Falcon)
GPU frequency 0.80 GHz
-- GPU (Turbo) --
-- GPU Generation 3
Technology 28
Max. displays 3
-- Compute units 8
-- Shader 512
No Hardware Raytracing No
No Frame Generation No
-- Max. GPU Memory 2 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 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 C3338R supports a maximum of 128 GB of memory in 1 memory channels. The AMD RX-421BD can connect up to GB of memory in 2 memory channels.
Intel Atom C3338R Characteristic AMD RX-421BD
DDR4-1866 Memory DDR4-2400, DDR3-2133
128 GB Max. Memory
1 (Single Channel) Memory channels 2 (Dual Channel)
29.9 GB/s Max. Bandwidth 38.4 GB/s
Yes ECC Yes
4.00 MB L2 Cache 2.00 MB
-- L3 Cache --
3.0 PCIe version 3.0
10 PCIe lanes 12
9.9 GB/s PCIe Bandwidth 11.8 GB/s

Thermal Management

The TDP (Thermal Design Power) of a processor specifies the required cooling solution. The Intel Atom C3338R has a TDP of 10.5 W, that of the AMD RX-421BD is 35 W.
Intel Atom C3338R Characteristic AMD RX-421BD
10.5 W TDP (PL1 / PBP) 35 W
-- TDP (PL2) --
-- TDP up --
-- TDP down 12 W
100 °C Tjunction max. 90 °C

Technical details

The Intel Atom C3338R has a 4.00 MB cache, while the AMD RX-421BD cache has a total of 2.00 MB.
Intel Atom C3338R Characteristic AMD RX-421BD
14 nm Technology 28 nm
Monolithic Chip design Unknown
x86-64 (64 bit) Instruction set (ISA) x86-64 (64 bit)
SSE4.1, SSE4.2 ISA extensions SSE4a, SSE4.1, SSE4.2, AVX, FMA3, FMA4
BGA 1310 Socket FP4
VT-x, VT-x EPT, VT-d Virtualization AMD-V, AMD-Vt
Yes AES-NI Yes
Windows 10, Linux Operating systems
Q2/2020 Release date Q4/2015
37 $ 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 C3338R Intel Atom C3338R
@ 0.00 GHz
0 (0%)
AMD RX-421BD AMD RX-421BD
AMD Radeon R7 - 512 (Merlin Falcon) @ 0.80 GHz
820 (100%)

Devices using this processor
Intel Atom C3338R AMD RX-421BD
Unknown Unknown

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