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GPU Comparison
AMD Radeon Pro 555X vs AMD Radeon R5 M255
AMD Radeon Pro 555X vs AMD Radeon R5 M255
VS
AMD Radeon Pro 555X
AMD Radeon R5 M255
We compared two Mobile platform GPUs: 4GB VRAM Radeon Pro 555X and 2GB VRAM Radeon R5 M255 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon Pro 555X 's Advantages
Released 3 years and 9 months late
More VRAM (4GB vs 2GB)
Larger VRAM bandwidth (94.08GB/s vs 32.00GB/s)
384 additional rendering cores
AMD Radeon R5 M255 's Advantages
Boost Clock940MHz
Score
Benchmark
FP32 (float)
Radeon Pro 555X
+93%
1.393 TFLOPS
Radeon R5 M255
0.721 TFLOPS
Radeon Pro 555X
VS
Radeon R5 M255
Graphics Card
Jul 2018
Release Date
Oct 2014
Radeon Pro Mac
Generation
Gem System
Mobile
Type
Mobile
PCIe 3.0 x8
Bus Interface
PCIe 3.0 x8
Clock Speeds
-
Base Clock
925 MHz
-
Boost Clock
940 MHz
1470 MHz
Memory Clock
1000 MHz
Memory
4GB
Memory Size
2GB
GDDR5
Memory Type
DDR3
128bit
Memory Bus
128bit
94.08GB/s
Bandwidth
32.00GB/s
Render Config
-
SM Count
-
12
Compute Units
6
768
Shading Units
384
48
TMUs
24
16
ROPs
8
-
Tensor Cores
-
-
RT Cores
-
16 KB (per CU)
L1 Cache
16 KB (per CU)
1024 KB
L2 Cache
256 KB
Theoretical Performance
14.51 GPixel/s
Pixel Rate
7.520 GPixel/s
43.54 GTexel/s
Texture Rate
22.56 GTexel/s
1393 GFLOPS
FP16 (half)
721.9 GFLOPS
1393 GFLOPS
FP32 (float)
721.9 GFLOPS
87.07 GFLOPS
FP64 (double)
45.12 GFLOPS
Graphics Processor
Polaris 21
GPU Name
Topaz
Polaris 21 PRO
GPU Variant
Topaz PRO (216-0858030)
GCN 4.0
Architecture
GCN 3.0
GlobalFoundries
Foundry
TSMC
14 nm
Process Size
28 nm
3 billion
Transistors
1.55 billion
123 mm²
Die Size
125 mm²
Board Design
75W
TDP
Unknown
-
Suggested PSU
-
No outputs
Outputs
Portable Device Dependent
None
Power Connectors
-
Graphics Features
12 (12_0)
DirectX
12 (12_0)
4.6
OpenGL
4.6
2.1
OpenCL
2.1
1.2
Vulkan
1.2.170
-
CUDA
-
6.4
Shader Model
6.5
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7
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9
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