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GPU Comparison
AMD Radeon R9 M395X vs AMD Radeon HD 6990M Rebrand
AMD Radeon R9 M395X vs AMD Radeon HD 6990M Rebrand
VS
AMD Radeon R9 M395X
AMD Radeon HD 6990M Rebrand
We compared two Mobile platform GPUs: 8GB VRAM Radeon R9 M395X 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 R9 M395X 's Advantages
Released 3 years and 10 months late
More VRAM (8GB vs 1GB)
Larger VRAM bandwidth (160.0GB/s vs 70.40GB/s)
1248 additional rendering cores
Lower TDP (75W vs 100W)
Score
Benchmark
FP32 (float)
Radeon R9 M395X
+131%
2.961 TFLOPS
Radeon HD 6990M Rebrand
1.28 TFLOPS
Radeon R9 M395X
VS
Radeon HD 6990M Rebrand
Graphics Card
May 2015
Release Date
Jul 2011
Crystal System
Generation
Vancouver
Mobile
Type
Mobile
PCIe 3.0 x16
Bus Interface
MXM-B (3.0)
Clock Speeds
-
Base Clock
-
-
Boost Clock
-
1250 MHz
Memory Clock
1100 MHz
Memory
8GB
Memory Size
1024MB
GDDR5
Memory Type
GDDR5
256bit
Memory Bus
128bit
160.0GB/s
Bandwidth
70.40GB/s
Render Config
-
SM Count
-
32
Compute Units
14
2048
Shading Units
800
128
TMUs
40
32
ROPs
16
-
Tensor Cores
-
-
RT Cores
-
16 KB (per CU)
L1 Cache
8 KB (per CU)
512 KB
L2 Cache
256 KB
Theoretical Performance
23.14 GPixel/s
Pixel Rate
12.80 GPixel/s
92.54 GTexel/s
Texture Rate
32.00 GTexel/s
2.961 TFLOPS
FP16 (half)
-
2.961 TFLOPS
FP32 (float)
1280 GFLOPS
185.1 GFLOPS
FP64 (double)
-
Graphics Processor
Amethyst
GPU Name
Broadway
Amethyst XT
GPU Variant
Broadway XTX
GCN 3.0
Architecture
TeraScale 2
TSMC
Foundry
TSMC
28 nm
Process Size
40 nm
5 billion
Transistors
1.04 billion
366 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
2.0
OpenCL
1.2
1.2
Vulkan
N/A
-
CUDA
-
6.3
Shader Model
5.0
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8
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