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GPU Comparison
AMD Radeon Pro 555X vs AMD Radeon HD 8770M
AMD Radeon Pro 555X vs AMD Radeon HD 8770M
VS
AMD Radeon Pro 555X
AMD Radeon HD 8770M
We compared two Mobile platform GPUs: 4GB VRAM Radeon Pro 555X and 2GB VRAM Radeon HD 8770M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon Pro 555X 's Advantages
Released 5 years and 3 months late
More VRAM (4GB vs 2GB)
Larger VRAM bandwidth (94.08GB/s vs 72.00GB/s)
384 additional rendering cores
AMD Radeon HD 8770M 's Advantages
Boost Clock825MHz
Score
Benchmark
FP32 (float)
Radeon Pro 555X
+120%
1.393 TFLOPS
Radeon HD 8770M
0.633 TFLOPS
Radeon Pro 555X
VS
Radeon HD 8770M
Graphics Card
Jul 2018
Release Date
Apr 2013
Radeon Pro Mac
Generation
Solar System
Mobile
Type
Mobile
PCIe 3.0 x8
Bus Interface
PCIe 3.0 x8
Clock Speeds
-
Base Clock
775 MHz
-
Boost Clock
825 MHz
1470 MHz
Memory Clock
1125 MHz
Memory
4GB
Memory Size
2GB
GDDR5
Memory Type
GDDR5
128bit
Memory Bus
128bit
94.08GB/s
Bandwidth
72.00GB/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
6.600 GPixel/s
43.54 GTexel/s
Texture Rate
19.80 GTexel/s
1393 GFLOPS
FP16 (half)
-
1393 GFLOPS
FP32 (float)
633.6 GFLOPS
87.07 GFLOPS
FP64 (double)
39.60 GFLOPS
Graphics Processor
Polaris 21
GPU Name
Mars
Polaris 21 PRO
GPU Variant
Mars S3 XT (216-0842018)
GCN 4.0
Architecture
GCN 1.0
GlobalFoundries
Foundry
TSMC
14 nm
Process Size
28 nm
3 billion
Transistors
0.95 billion
123 mm²
Die Size
77 mm²
Board Design
75W
TDP
Unknown
-
Suggested PSU
-
No outputs
Outputs
Portable Device Dependent
None
Power Connectors
-
Graphics Features
12 (12_0)
DirectX
12 (11_1)
4.6
OpenGL
4.6
2.1
OpenCL
2.1 (1.2)
1.2
Vulkan
1.2.170
-
CUDA
-
6.4
Shader Model
6.5 (5.1)
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6
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8
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9
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