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GPU Comparison
AMD Radeon HD 6990M vs AMD Radeon Pro 555
AMD Radeon HD 6990M vs AMD Radeon Pro 555
VS
AMD Radeon HD 6990M
AMD Radeon Pro 555
We compared two Mobile platform GPUs: 2GB VRAM Radeon HD 6990M and 2GB VRAM Radeon Pro 555 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon HD 6990M 's Advantages
Larger VRAM bandwidth (115.2GB/s vs 81.60GB/s)
352 additional rendering cores
AMD Radeon Pro 555 's Advantages
Released 5 years and 11 months late
Lower TDP (75W vs 100W)
Score
Benchmark
FP32 (float)
Radeon HD 6990M
+22%
1.602 TFLOPS
Radeon Pro 555
1.306 TFLOPS
Radeon HD 6990M
VS
Radeon Pro 555
Graphics Card
Jul 2011
Release Date
Jun 2017
Vancouver
Generation
Radeon Pro Mac
Mobile
Type
Mobile
MXM-B (3.0)
Bus Interface
PCIe 3.0 x8
Clock Speeds
-
Base Clock
-
-
Boost Clock
-
900 MHz
Memory Clock
1275 MHz
Memory
2GB
Memory Size
2GB
GDDR5
Memory Type
GDDR5
256bit
Memory Bus
128bit
115.2GB/s
Bandwidth
81.60GB/s
Render Config
-
SM Count
-
14
Compute Units
12
1120
Shading Units
768
56
TMUs
48
32
ROPs
16
-
Tensor Cores
-
-
RT Cores
-
8 KB (per CU)
L1 Cache
16 KB (per CU)
512 KB
L2 Cache
1024 KB
Theoretical Performance
22.88 GPixel/s
Pixel Rate
13.60 GPixel/s
40.04 GTexel/s
Texture Rate
40.80 GTexel/s
-
FP16 (half)
1306 GFLOPS
1.602 TFLOPS
FP32 (float)
1306 GFLOPS
-
FP64 (double)
81.60 GFLOPS
Graphics Processor
Blackcomb
GPU Name
Polaris 21
Blackcomb XTX (216-0811030)
GPU Variant
Polaris 21 PRO
TeraScale 2
Architecture
GCN 4.0
TSMC
Foundry
GlobalFoundries
40 nm
Process Size
14 nm
1.7 billion
Transistors
3 billion
212 mm²
Die Size
123 mm²
Board Design
100W
TDP
75W
-
Suggested PSU
-
No outputs
Outputs
No outputs
None
Power Connectors
None
Graphics Features
11.2 (11_0)
DirectX
12 (12_0)
4.4
OpenGL
4.6
1.2
OpenCL
2.1
N/A
Vulkan
1.2
-
CUDA
-
5.0
Shader Model
6.4
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8
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