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
GPU
Iris Pro Graphics P580
CORE STATE
Skylake GT4e
VRAM
System Shared
CLOCK SPEED
1000 MHz
TDP
15 W
BUS WIDTH
System Shared
ARCHITECTURE
Generation 9.0
PROCESS
14 nm+
LAUNCH DATE
2015
PERFORMANCE BENCHMARKS
geekbench_metal
geekbench_opencl
geekbench_vulkan
DETAILED SPECIFICATIONS
SPECIFICATION
Pro 555X
Iris Pro Graphics P580
Core Specs
Shading Units
768
576
-25.0%
Shaders
768
576
-25.0%
TMUs
48
72
+50.0%
ROPs
16
9
-43.8%
Compute Units
12
—
Execution Units
—
72
Clocks
Base Clock
—
350 MHz
Boost Clock
—
1000 MHz
GPU Clock
907 MHz
—
Memory Clock
1470 MHz
5.9 Gbps effective
System Shared
Memory
Memory Size
4 GB
System Shared
VRAM (MB)
4,096
—
Memory Type
GDDR5
System Shared
Memory Bus
128 bit
System Shared
Bandwidth
94.08 GB/s
System Dependent
Cache
L1 Cache
16 KB (per CU)
—
L2 Cache
1024 KB
—
Performance
Pixel Rate
14.51 GPixel/s
9.000 GPixel/s
Texture Rate
43.54 GTexel/s
72.00 GTexel/s
FP32 (TFLOPS)
1,393.2 GFLOPS
1,152.0 GFLOPS
FP64 (TFLOPS)
87.07 GFLOPS (1:16)
288.0 GFLOPS (1:4)
FP16 (TFLOPS)
1,393.2 GFLOPS (1:1)
2.304 TFLOPS (2:1)
Power
TDP
75 W
15 W
TDP (W)
75
15
-80.0%
Power Connectors
None
—
Architecture
Architecture
GCN 4.0
Generation 9.0
GPU Name
Polaris 21
Skylake GT4e
Generation
Radeon Pro Mac
(500X Series)
HD Graphics-W
(Skylake)
Process Size
14 nm
14 nm+
Transistors
3,000 million
—
Die Size
123 mm²
—
Foundry
GlobalFoundries
Intel
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
3.0
Shader Model
6.7
6.4
Physical
Slot Width
IGP
IGP
Outputs
Portable Device Dependent
Motherboard Dependent
Bus Interface
PCIe 3.0 x8
Ring Bus
Other
Production
End-of-life
End-of-life