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GPU Comparison
AMD Radeon Pro 555X vs AMD Radeon HD 7770M
AMD Radeon Pro 555X vs AMD Radeon HD 7770M
VS
AMD Radeon Pro 555X
AMD Radeon HD 7770M
We compared two Mobile platform GPUs: 4GB VRAM Radeon Pro 555X and 1024MB VRAM Radeon HD 7770M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon Pro 555X 's Advantages
Released 6 years and 3 months late
More VRAM (4GB vs 1GB)
Larger VRAM bandwidth (94.08GB/s vs 64.00GB/s)
256 additional rendering cores
AMD Radeon HD 7770M 's Advantages
Lower TDP (32W vs 75W)
Score
Benchmark
FP32 (float)
Radeon Pro 555X
+101%
1.393 TFLOPS
Radeon HD 7770M
0.691 TFLOPS
Radeon Pro 555X
VS
Radeon HD 7770M
Graphics Card
Jul 2018
Release Date
Apr 2012
Radeon Pro Mac
Generation
London
Mobile
Type
Mobile
PCIe 3.0 x8
Bus Interface
PCIe 2.0 x16
Clock Speeds
-
Base Clock
-
-
Boost Clock
-
1470 MHz
Memory Clock
1000 MHz
Memory
4GB
Memory Size
1024MB
GDDR5
Memory Type
GDDR5
128bit
Memory Bus
128bit
94.08GB/s
Bandwidth
64.00GB/s
Render Config
-
SM Count
-
12
Compute Units
8
768
Shading Units
512
48
TMUs
32
16
ROPs
16
-
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
10.80 GPixel/s
43.54 GTexel/s
Texture Rate
21.60 GTexel/s
1393 GFLOPS
FP16 (half)
-
1393 GFLOPS
FP32 (float)
691.2 GFLOPS
87.07 GFLOPS
FP64 (double)
43.20 GFLOPS
Graphics Processor
Polaris 21
GPU Name
Chelsea
Polaris 21 PRO
GPU Variant
Chelsea XT
GCN 4.0
Architecture
GCN 1.0
GlobalFoundries
Foundry
TSMC
14 nm
Process Size
28 nm
3 billion
Transistors
1.5 billion
123 mm²
Die Size
123 mm²
Board Design
75W
TDP
32W
-
Suggested PSU
-
No outputs
Outputs
No outputs
None
Power Connectors
-
Graphics Features
12 (12_0)
DirectX
12 (11_1)
4.6
OpenGL
4.6
2.1
OpenCL
1.2
1.2
Vulkan
1.2
-
CUDA
-
6.4
Shader Model
5.1
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4
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5
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6
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7
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8
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9
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