AMD Radeon HD 6990M vs AMD Radeon R9 M485X
GPU Specs Compare
Graphics Card
Release Date
Jul 2011
May 2016
Generation
Vancouver
Crystal System
Type
Mobile
Mobile
Bus Interface
MXM-B (3.0)
MXM-B (3.0)
Clock Speeds
Memory Clock
900 MHz
1250 MHz
Memory
Memory Size
2GB
8GB
Memory Type
GDDR5
GDDR5
Memory Bus
256bit
256bit
Bandwidth
115.2GB/s
160.0GB/s
Render Config
Compute Units
14
32
Shading Units
1120
2048
TMUs
56
128
ROPs
32
32
L1 Cache
8 KB (per CU)
16 KB (per CU)
L2 Cache
512 KB
512 KB
Theoretical Performance
Pixel Rate
22.88 GPixel/s
23.14 GPixel/s
Texture Rate
40.04 GTexel/s
92.54 GTexel/s
FP32 (float)
1.602 TFLOPS
2.961 TFLOPS
FP16 (half)
-
2.961 TFLOPS
FP64 (double)
-
185.1 GFLOPS
Graphics Processor
GPU Name
Blackcomb
Amethyst
GPU Variant
Blackcomb XTX(216-0811030)
Amethyst XT
Architecture
TeraScale 2
GCN 3.0
Foundry
TSMC
TSMC
Process Size
40 nm
28 nm
Transistors
1.7 billion
5 billion
Die Size
212 mm²
366 mm²
Board Design
TDP
100W
250W
Outputs
No outputs
No outputs
Power Connectors
None
None
Graphics Features
DirectX
11.2 (11_0)
12 (12_0)
OpenGL
4.4
4.6
OpenCL
1.2
2.0
Vulkan
N/A
1.2
Shader Model
5.0
6.3