GPU Comparison
RADEON
AMD Radeon 550X
CORE STATE
Lexa
VRAM
2 GB
CLOCK SPEED
1218 MHz
TDP
50 W
BUS WIDTH
128 bit
ARCHITECTURE
GCN 4.0
PROCESS
14 nm
LAUNCH DATE
2019
VS
RADEON
Radeon Pro Vega 20
CORE STATE
Vega 12
VRAM
4 GB
CLOCK SPEED
1283 MHz
TDP
100 W
BUS WIDTH
1024 bit
ARCHITECTURE
GCN 5.0
PROCESS
14 nm
LAUNCH DATE
2018
PERFORMANCE BENCHMARKS
geekbench_opencl
geekbench_metal
geekbench_vulkan
DETAILED SPECIFICATIONS
SPECIFICATION
550X
Pro Vega 20
Core Specs
Shading Units
512
1,280
+150.0%
Shaders
512
1,280
+150.0%
TMUs
32
80
+150.0%
ROPs
16
32
+100.0%
Compute Units
8
20
+150.0%
Clocks
Base Clock
1082 MHz
815 MHz
Boost Clock
1218 MHz
1283 MHz
Memory Clock
1750 MHz
7 Gbps effective
740 MHz
1480 Mbps effective
Memory
Memory Size
2 GB
4 GB
VRAM (MB)
2,048
4,096
+100.0%
Memory Type
GDDR5
HBM2
Memory Bus
128 bit
1024 bit
Bandwidth
112.0 GB/s
189.4 GB/s
Cache
L1 Cache
16 KB (per CU)
16 KB (per CU)
L2 Cache
512 KB
1024 KB
Performance
Pixel Rate
19.49 GPixel/s
41.06 GPixel/s
Texture Rate
38.98 GTexel/s
102.6 GTexel/s
FP32 (TFLOPS)
1,247.2 GFLOPS
3.284 TFLOPS
FP64 (TFLOPS)
77.95 GFLOPS (1:16)
205.3 GFLOPS (1:16)
FP16 (TFLOPS)
1,247.2 GFLOPS (1:1)
6.569 TFLOPS (2:1)
Power
TDP
50 W
100 W
TDP (W)
50
100
+100.0%
Suggested PSU
250 W
—
Power Connectors
None
—
Architecture
Architecture
GCN 4.0
GCN 5.0
GPU Name
Lexa
Vega 12
Generation
Polaris
(RX 500X)
Radeon Pro Mac
(Vega Series)
Process Size
14 nm
14 nm
Transistors
2,200 million
—
Die Size
103 mm²
—
Foundry
GlobalFoundries
GlobalFoundries
Density
21.4M / mm²
—
API Support
DirectX
12 (12_0)
12 (12_1)
OpenGL
4.6
4.6
Vulkan
1.3
1.3
OpenCL
2.1
2.1
Shader Model
6.7
6.0
Physical
Slot Width
Dual-slot
IGP
Length
145 mm
5.7 inches
—
Outputs
1x DVI1x HDMI 2.0b1x DisplayPort 1.4a
Portable Device Dependent
Bus Interface
PCIe 3.0 x8
PCIe 3.0 x16
Other
Production
End-of-life
End-of-life
Predecessor
Polaris
—
Successor
Vega
—