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GPU Comparison
AMD Radeon R9 M485X vs AMD Radeon HD 6870M
AMD Radeon R9 M485X vs AMD Radeon HD 6870M
VS
AMD Radeon R9 M485X
AMD Radeon HD 6870M
We compared two Mobile platform GPUs: 8GB VRAM Radeon R9 M485X and 1024MB VRAM Radeon HD 6870M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon R9 M485X 's Advantages
Released 5 years and 4 months late
More VRAM (8GB vs 1GB)
Larger VRAM bandwidth (160.0GB/s vs 64.00GB/s)
1248 additional rendering cores
AMD Radeon HD 6870M 's Advantages
Lower TDP (50W vs 250W)
Score
Benchmark
FP32 (float)
Radeon R9 M485X
+174%
2.961 TFLOPS
Radeon HD 6870M
1.08 TFLOPS
Radeon R9 M485X
VS
Radeon HD 6870M
Graphics Card
May 2016
Release Date
Jan 2011
Crystal System
Generation
Vancouver
Mobile
Type
Mobile
MXM-B (3.0)
Bus Interface
MXM-B (3.0)
Clock Speeds
-
Base Clock
-
-
Boost Clock
-
1250 MHz
Memory Clock
1000 MHz
Memory
8GB
Memory Size
1024MB
GDDR5
Memory Type
GDDR5
256bit
Memory Bus
128bit
160.0GB/s
Bandwidth
64.00GB/s
Render Config
-
SM Count
-
32
Compute Units
10
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
10.80 GPixel/s
92.54 GTexel/s
Texture Rate
27.00 GTexel/s
2.961 TFLOPS
FP16 (half)
-
2.961 TFLOPS
FP32 (float)
1080 GFLOPS
185.1 GFLOPS
FP64 (double)
-
Graphics Processor
Amethyst
GPU Name
Granville
Amethyst XT
GPU Variant
Granville XT (216-0769024)
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
250W
TDP
50W
-
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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