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GPU Comparison
AMD Radeon HD 6990M Rebrand vs AMD Radeon R9 M395 Mac Edition
AMD Radeon HD 6990M Rebrand vs AMD Radeon R9 M395 Mac Edition
VS
AMD Radeon HD 6990M Rebrand
AMD Radeon R9 M395 Mac Edition
We compared two Mobile platform GPUs: 1024MB VRAM Radeon HD 6990M Rebrand and 2GB VRAM Radeon R9 M395 Mac Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon HD 6990M Rebrand 's Advantages
Lower TDP (100W vs 250W)
AMD Radeon R9 M395 Mac Edition 's Advantages
Released 3 years and 10 months late
More VRAM (2GB vs 1GB)
Larger VRAM bandwidth (174.7GB/s vs 70.40GB/s)
992 additional rendering cores
Score
Benchmark
FP32 (float)
Radeon HD 6990M Rebrand
1.28 TFLOPS
Radeon R9 M395 Mac Edition
+133%
2.989 TFLOPS
Radeon HD 6990M Rebrand
VS
Radeon R9 M395 Mac Edition
Graphics Card
Jul 2011
Release Date
May 2015
Vancouver
Generation
Crystal System
Mobile
Type
Mobile
MXM-B (3.0)
Bus Interface
MXM-B (3.0)
Clock Speeds
-
Base Clock
-
-
Boost Clock
-
1100 MHz
Memory Clock
1365 MHz
Memory
1024MB
Memory Size
2GB
GDDR5
Memory Type
GDDR5
128bit
Memory Bus
256bit
70.40GB/s
Bandwidth
174.7GB/s
Render Config
-
SM Count
-
14
Compute Units
28
800
Shading Units
1792
40
TMUs
112
16
ROPs
32
-
Tensor Cores
-
-
RT Cores
-
8 KB (per CU)
L1 Cache
-
256 KB
L2 Cache
-
Theoretical Performance
12.80 GPixel/s
Pixel Rate
26.69 GPixel/s
32.00 GTexel/s
Texture Rate
93.41 GTexel/s
-
FP16 (half)
-
1280 GFLOPS
FP32 (float)
2.989 TFLOPS
-
FP64 (double)
373.6 GFLOPS
Graphics Processor
Broadway
GPU Name
Amethyst
Broadway XTX
GPU Variant
Amethyst PRO (216-0872004)
TeraScale 2
Architecture
GCN 3.0
TSMC
Foundry
TSMC
40 nm
Process Size
28 nm
1.04 billion
Transistors
5 billion
166 mm²
Die Size
366 mm²
Board Design
100W
TDP
250W
-
Suggested PSU
-
No outputs
Outputs
No outputs
-
Power Connectors
None
Graphics Features
11.2 (11_0)
DirectX
12 (12_0)
4.4
OpenGL
4.6
1.2
OpenCL
2.0
N/A
Vulkan
1.2
-
CUDA
-
5.0
Shader Model
6.3
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