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 R9 M265X
CORE STATE
Venus
VRAM
2 GB
CLOCK SPEED
625 MHz
TDP
—
BUS WIDTH
128 bit
ARCHITECTURE
GCN 1.0
PROCESS
28 nm
LAUNCH DATE
2014
PERFORMANCE BENCHMARKS
geekbench_metal
geekbench_opencl
geekbench_vulkan
DETAILED SPECIFICATIONS
SPECIFICATION
Pro 555X
R9 M265X
Core Specs
Shading Units
768
640
-16.7%
Shaders
768
640
-16.7%
TMUs
48
40
-16.7%
ROPs
16
16
0.0%
Compute Units
12
10
-16.7%
Clocks
Base Clock
—
575 MHz
Boost Clock
—
625 MHz
GPU Clock
907 MHz
—
Memory Clock
1470 MHz
5.9 Gbps effective
1000 MHz
4 Gbps effective
Memory
Memory Size
4 GB
2 GB
VRAM (MB)
4,096
2,048
-50.0%
Memory Type
GDDR5
GDDR5
Memory Bus
128 bit
128 bit
Bandwidth
94.08 GB/s
64.00 GB/s
Cache
L1 Cache
16 KB (per CU)
16 KB (per CU)
L2 Cache
1024 KB
256 KB
Performance
Pixel Rate
14.51 GPixel/s
10.00 GPixel/s
Texture Rate
43.54 GTexel/s
25.00 GTexel/s
FP32 (TFLOPS)
1,393.2 GFLOPS
800.0 GFLOPS
FP64 (TFLOPS)
87.07 GFLOPS (1:16)
50.00 GFLOPS (1:16)
FP16 (TFLOPS)
1,393.2 GFLOPS (1:1)
—
Power
TDP
75 W
—
TDP (W)
75
—
Power Connectors
None
—
Architecture
Architecture
GCN 4.0
GCN 1.0
GPU Name
Polaris 21
Venus
Generation
Radeon Pro Mac
(500X Series)
Gem System
(R9 M200)
Process Size
14 nm
28 nm
Transistors
3,000 million
1,500 million
Die Size
123 mm²
123 mm²
Foundry
GlobalFoundries
TSMC
Density
24.4M / mm²
12.2M / mm²
API Support
DirectX
12 (12_0)
12 (11_1)
OpenGL
4.6
4.6
Vulkan
1.3
1.2.170
OpenCL
2.1
2.1 (1.2)
Shader Model
6.7
6.5 (5.1)
Physical
Slot Width
IGP
—
Outputs
Portable Device Dependent
—
Bus Interface
PCIe 3.0 x8
PCIe 3.0 x16
Other
Production
End-of-life
End-of-life
Predecessor
—
Solar System
Successor
—
Polaris Mobile