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GPU Comparison
AMD Radeon R9 M385X vs AMD Radeon HD 6990M Rebrand
AMD Radeon R9 M385X vs AMD Radeon HD 6990M Rebrand
VS
AMD Radeon R9 M385X
AMD Radeon HD 6990M Rebrand
We compared two Mobile platform GPUs: 4GB VRAM Radeon R9 M385X 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 M385X 's Advantages
Released 3 years and 10 months late
Boost Clock1100MHz
More VRAM (4GB vs 1GB)
Larger VRAM bandwidth (76.80GB/s vs 70.40GB/s)
96 additional rendering cores
Score
Benchmark
FP32 (float)
Radeon R9 M385X
+53%
1.971 TFLOPS
Radeon HD 6990M Rebrand
1.28 TFLOPS
Radeon R9 M385X
VS
Radeon HD 6990M Rebrand
Graphics Card
May 2015
Release Date
Jul 2011
Gem System
Generation
Vancouver
Mobile
Type
Mobile
PCIe 3.0 x16
Bus Interface
MXM-B (3.0)
Clock Speeds
1000 MHz
Base Clock
-
1100 MHz
Boost Clock
-
1200 MHz
Memory Clock
1100 MHz
Memory
4GB
Memory Size
1024MB
GDDR5
Memory Type
GDDR5
128bit
Memory Bus
128bit
76.80GB/s
Bandwidth
70.40GB/s
Render Config
-
SM Count
-
14
Compute Units
14
896
Shading Units
800
56
TMUs
40
16
ROPs
16
-
Tensor Cores
-
-
RT Cores
-
16 KB (per CU)
L1 Cache
8 KB (per CU)
256 KB
L2 Cache
256 KB
Theoretical Performance
17.60 GPixel/s
Pixel Rate
12.80 GPixel/s
61.60 GTexel/s
Texture Rate
32.00 GTexel/s
-
FP16 (half)
-
1.971 TFLOPS
FP32 (float)
1280 GFLOPS
123.2 GFLOPS
FP64 (double)
-
Graphics Processor
Strato
GPU Name
Broadway
Strato XT
GPU Variant
Broadway XTX
GCN 2.0
Architecture
TeraScale 2
TSMC
Foundry
TSMC
28 nm
Process Size
40 nm
2.08 billion
Transistors
1.04 billion
160 mm²
Die Size
166 mm²
Board Design
Unknown
TDP
100W
-
Suggested PSU
-
Portable Device Dependent
Outputs
No outputs
-
Power Connectors
-
Graphics Features
12 (12_0)
DirectX
11.2 (11_0)
4.6
OpenGL
4.4
2.1
OpenCL
1.2
1.2.170
Vulkan
N/A
-
CUDA
-
6.5
Shader Model
5.0
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