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GPU Comparison
AMD Radeon Pro 555 vs AMD Radeon HD 6990M Rebrand
AMD Radeon Pro 555 vs AMD Radeon HD 6990M Rebrand
VS
AMD Radeon Pro 555
AMD Radeon HD 6990M Rebrand
We compared two Mobile platform GPUs: 2GB VRAM Radeon Pro 555 and 1024MB VRAM Radeon HD 6990M Rebrand to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon Pro 555 's Advantages
Released 5 years and 11 months late
More VRAM (2GB vs 1GB)
Larger VRAM bandwidth (81.60GB/s vs 70.40GB/s)
Lower TDP (75W vs 100W)
AMD Radeon HD 6990M Rebrand 's Advantages
32 additional rendering cores
Score
Benchmark
FP32 (float)
Radeon Pro 555
+2%
1.306 TFLOPS
Radeon HD 6990M Rebrand
1.28 TFLOPS
Radeon Pro 555
VS
Radeon HD 6990M Rebrand
Graphics Card
Jun 2017
Release Date
Jul 2011
Radeon Pro Mac
Generation
Vancouver
Mobile
Type
Mobile
PCIe 3.0 x8
Bus Interface
MXM-B (3.0)
Clock Speeds
-
Base Clock
-
-
Boost Clock
-
1275 MHz
Memory Clock
1100 MHz
Memory
2GB
Memory Size
1024MB
GDDR5
Memory Type
GDDR5
128bit
Memory Bus
128bit
81.60GB/s
Bandwidth
70.40GB/s
Render Config
-
SM Count
-
12
Compute Units
14
768
Shading Units
800
48
TMUs
40
16
ROPs
16
-
Tensor Cores
-
-
RT Cores
-
16 KB (per CU)
L1 Cache
8 KB (per CU)
1024 KB
L2 Cache
256 KB
Theoretical Performance
13.60 GPixel/s
Pixel Rate
12.80 GPixel/s
40.80 GTexel/s
Texture Rate
32.00 GTexel/s
1306 GFLOPS
FP16 (half)
-
1306 GFLOPS
FP32 (float)
1280 GFLOPS
81.60 GFLOPS
FP64 (double)
-
Graphics Processor
Polaris 21
GPU Name
Broadway
Polaris 21 PRO
GPU Variant
Broadway XTX
GCN 4.0
Architecture
TeraScale 2
GlobalFoundries
Foundry
TSMC
14 nm
Process Size
40 nm
3 billion
Transistors
1.04 billion
123 mm²
Die Size
166 mm²
Board Design
75W
TDP
100W
-
Suggested PSU
-
No outputs
Outputs
No outputs
None
Power Connectors
-
Graphics Features
12 (12_0)
DirectX
11.2 (11_0)
4.6
OpenGL
4.4
2.1
OpenCL
1.2
1.2
Vulkan
N/A
-
CUDA
-
6.4
Shader Model
5.0
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