GPU Comparison
RADEON
AMD Radeon Pro 555X
CORE STATE
Polaris 21
VRAM
4 GB
CLOCK SPEED
—
TDP
75 W
BUS WIDTH
128 bit
ARCHITECTURE
GCN 4.0
PROCESS
14 nm
LAUNCH DATE
2018
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_metal
geekbench_opencl
geekbench_vulkan
DETAILED SPECIFICATIONS
SPECIFICATION
Pro 555X
Pro Vega 20
Core Specs
Shading Units
768
1,280
+66.7%
Shaders
768
1,280
+66.7%
TMUs
48
80
+66.7%
ROPs
16
32
+100.0%
Compute Units
12
20
+66.7%
Clocks
Base Clock
—
815 MHz
Boost Clock
—
1283 MHz
GPU Clock
907 MHz
—
Memory Clock
1470 MHz
5.9 Gbps effective
740 MHz
1480 Mbps effective
Memory
Memory Size
4 GB
4 GB
VRAM (MB)
4,096
4,096
0.0%
Memory Type
GDDR5
HBM2
Memory Bus
128 bit
1024 bit
Bandwidth
94.08 GB/s
189.4 GB/s
Cache
L1 Cache
16 KB (per CU)
16 KB (per CU)
L2 Cache
1024 KB
1024 KB
Performance
Pixel Rate
14.51 GPixel/s
41.06 GPixel/s
Texture Rate
43.54 GTexel/s
102.6 GTexel/s
FP32 (TFLOPS)
1,393.2 GFLOPS
3.284 TFLOPS
FP64 (TFLOPS)
87.07 GFLOPS (1:16)
205.3 GFLOPS (1:16)
FP16 (TFLOPS)
1,393.2 GFLOPS (1:1)
6.569 TFLOPS (2:1)
Power
TDP
75 W
100 W
TDP (W)
75
100
+33.3%
Power Connectors
None
—
Architecture
Architecture
GCN 4.0
GCN 5.0
GPU Name
Polaris 21
Vega 12
Generation
Radeon Pro Mac
(500X Series)
Radeon Pro Mac
(Vega Series)
Process Size
14 nm
14 nm
Transistors
3,000 million
—
Die Size
123 mm²
—
Foundry
GlobalFoundries
GlobalFoundries
Density
24.4M / 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
IGP
IGP
Outputs
Portable Device Dependent
Portable Device Dependent
Bus Interface
PCIe 3.0 x8
PCIe 3.0 x16
Other
Production
End-of-life
End-of-life