Radeon HD 6990M and GeForce GT 540M - video card comparison
Radeon HD 6990M
GeForce GT 540M
Architecture
Terascale 2 (2009−2015)
Fermi (2010−2014)
GPU code name
Blackcomb XTX
N12P-GS
Market segment
Laptop
Laptop
Release date
July 2011
January 2011
Interface
MXM-B (3.0)
MXM-A (3.0)
Supplementary power connectors
None
-
Core clock speed
715 MHz
672 MHz
CUDA cores
-
96
Floating-point performance
1,601.6 gflops
258.05 gflops
Manufacturing process technology
40 nm
40 nm
Number of transistors
1,700 million
585 million
Pipelines / CUDA cores
1120
96
Power consumption (TDP)
100 Watt
35 Watt
Texture fill rate
40.04
10.8 billion/sec
Memory type
GDDR5
DDR3
Maximum RAM amount
2 GB
2 GB
Memory bus width
256 Bit
128 Bit
Memory clock speed
900 MHz
900 MHz
Memory bandwidth
115.2 GB/s
28.8 GB/s
Shared memory
-
-
Display Connectors
No outputs
No outputs
DirectX
11.2 (11_0)
12 API
CUDA
-
+
OpenCL
1.2
1.1
OpenGL
4.4
4.5
Shader Model
5.0
5.1
Vulkan
N/A
N/A
3D Blu-Ray
-
+
3D Gaming
-
+
Optimus
-
+