AMD RX-421BD vs AMD RX-425BB

Comparative analysis of AMD RX-421BD and AMD RX-425BB processors for all known characteristics in the following categories: Essentials, Performance, Memory, Graphics, Graphics interfaces, Graphics API support, Compatibility, Peripherals, Advanced Technologies, Virtualization. Benchmark processor performance analysis: CompuBench 1.5 Desktop - Face Detection (mPixels/s), CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s), CompuBench 1.5 Desktop - T-Rex (Frames/s), CompuBench 1.5 Desktop - Video Composition (Frames/s), CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s), GFXBench 4.0 - Car Chase Offscreen (Frames), GFXBench 4.0 - Manhattan (Frames), GFXBench 4.0 - T-Rex (Frames), GFXBench 4.0 - Car Chase Offscreen (Fps), GFXBench 4.0 - Manhattan (Fps), GFXBench 4.0 - T-Rex (Fps), PassMark - Single thread mark, PassMark - CPU mark.

AMD RX-421BD

AMD RX-425BB

Differences

Reasons to consider the AMD RX-421BD

CPU is newer: launch date 1 year(s) 5 month(s) later
Around 25% more L1 cache; more data can be stored in the L1 cache for quick access later
Around 36% better performance in GFXBench 4.0 - Manhattan (Frames): 1942 vs 1427
Around 36% better performance in GFXBench 4.0 - Manhattan (Fps): 1942 vs 1427

Specifications (specs)
Launch date	21 October 2015 vs 20 May 2014
L1 cache	320 KB vs 256 KB
Benchmarks
GFXBench 4.0 - Manhattan (Frames)	1942 vs 1427
GFXBench 4.0 - Manhattan (Fps)	1942 vs 1427

Reasons to consider the AMD RX-425BB

2x more L2 cache, more data can be stored in the L2 cache for quick access later
169.5x better performance in GFXBench 4.0 - Car Chase Offscreen (Frames): 1356 vs 8
169.5x better performance in GFXBench 4.0 - Car Chase Offscreen (Fps): 1356 vs 8

Specifications (specs)
L2 cache	4 MB vs 2 MB
Benchmarks
GFXBench 4.0 - Car Chase Offscreen (Frames)	1356 vs 8
GFXBench 4.0 - Car Chase Offscreen (Fps)	1356 vs 8

Compare benchmarks

CPU 1: AMD RX-421BD
CPU 2: AMD RX-425BB

GFXBench 4.0 - Car Chase Offscreen (Frames)

CPU 1

CPU 2

1356

GFXBench 4.0 - Manhattan (Frames)

CPU 1

CPU 2

1942

1427

GFXBench 4.0 - Car Chase Offscreen (Fps)

CPU 1

CPU 2

1356

GFXBench 4.0 - Manhattan (Fps)

CPU 1

CPU 2

1942

1427

Name	AMD RX-421BD	AMD RX-425BB
CompuBench 1.5 Desktop - Face Detection (mPixels/s)	3.817
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)	10.518
CompuBench 1.5 Desktop - T-Rex (Frames/s)	0.189
CompuBench 1.5 Desktop - Video Composition (Frames/s)	0.608
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)	4.623
GFXBench 4.0 - Car Chase Offscreen (Frames)	8	1356
GFXBench 4.0 - Manhattan (Frames)	1942	1427
GFXBench 4.0 - T-Rex (Frames)	7025
GFXBench 4.0 - Car Chase Offscreen (Fps)	8	1356
GFXBench 4.0 - Manhattan (Fps)	1942	1427
GFXBench 4.0 - T-Rex (Fps)	7025
PassMark - Single thread mark		1178
PassMark - CPU mark		2637

Compare specifications (specs)

	AMD RX-421BD	AMD RX-425BB
Essentials
Architecture codename	Merlin Falcon	Bald Eagle
Family	AMD R-Series	AMD R-Series
Launch date	21 October 2015	20 May 2014
Place in performance rating	1720	1721
Processor Number	RX-421BD	RX-425BB
Vertical segment	Embedded	Embedded
Performance
64 bit support
Base frequency	2100 MHz	2500 MHz
Die size	1073 mm2	928 mm2
L1 cache	320 KB	256 KB
L2 cache	2 MB	4 MB
Manufacturing process technology	28 nm	28 nm
Maximum frequency	3400 MHz	3400 MHz
Number of cores	4	4
Number of threads	4	4
Memory
ECC memory support
Max memory channels	2	2
Maximum memory bandwidth	38.4 GB/s	29.9 GB/s
Supported memory types	DDR3-2133, DDR4-2400	DDR3-1866
Graphics
Graphics base frequency	800 MHz	576 MHz
Number of pipelines	512	384
Processor graphics	Radeon R7 series	Radeon R6 Graphics
Unified Video Decoder (UVD)
Video Codec Engine (VCE)
Graphics max dynamic frequency		654 MHz
Graphics interfaces
DisplayPort
DVI
eDP
HDMI
Number of displays supported	3	4
Graphics API support
DirectX	12	11.1
OpenGL	4.4	4.2
Compatibility
Configurable TDP	12-35 Watt	30-35 Watt
Package Size	micro-BGA	micro-BGA
Sockets supported	BGA (FP4)	BGA (FP3)
Thermal Design Power (TDP)	35 Watt	35 Watt
Peripherals
PCI Express revision	3.0	3.0
UART
USB revision	3.0
Advanced Technologies
Enhanced Virus Protection (EVP)
Fused Multiply-Add 3 (FMA3)
Fused Multiply-Add 4 (FMA4)
Intel® Advanced Vector Extensions (AVX)
Intel® Advanced Vector Extensions 2 (AVX2)
Intel® AES New Instructions
Virtualization
AMD Virtualization (AMD-V™)