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Radeon 550X 640SP

GCN 4.0 Radeon 500 / 600 Series Gaming Desktop GDDR5 2018

Key Metrics

Launch Date: 2018-04-11
Stream Processors: 640
Memory: 4 GB GDDR5
Memory Bandwidth: 48 GB/s
TDP/TBP: 50 W
Interface: PCIe 3.0 x8

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GPU Specs

What do these fields mean?

Identity
Entry Type	Reference GPU
Official Name	AMD Radeon 550X 640SP
Architecture	GCN 4.0
Launch Date	2018-04-11
Core Specs
GPU Die	Lexa
Chip Variant / Package	FCBGA-769
Process Node	GlobalFoundries 14 nm
Transistor Count	2.2 billion
Die Size	103 mm²
Stream Processors	640
TMUs	40
ROPs	16
Base Clock	1,019 MHz
Boost Clock	1,071 MHz
Pixel Fillrate	17.14 GP/s
Texture Fillrate	42.84 GT/s
FP32 Throughput	1.37 TFLOPS
FP16 Throughput	1.37 TFLOPS
FP64 Throughput	0.09 TFLOPS
Memory
Memory Size	4 GB
Memory Type	GDDR5
Memory Bus Width	64-bit
Memory Clock	1,500 MHz
Memory Bandwidth	48 GB/s
L2 Cache	0.25 MB
L1 Cache	16 KB
Board and Display
TDP / TBP	50 W
Recommended PSU	250 W
Interface	PCIe 3.0 x8
Display Outputs	1x DVI, 1x HDMI 2.0b, 1x DisplayPort 1.4a
Slot Width	IGP
Software
Shader Model	6.7
DirectX Support	DirectX 12.0
Vulkan Support	Vulkan 1.3
OpenGL Support	OpenGL 4.6
OpenCL Support	OpenCL 2.1

Sources

Independent reference sources

TechPowerUp GPU SpecsOpen source