Radeon HD 6990M and GeForce GT 650M SLI - video card comparison
Radeon HD 6990M
GeForce GT 650M SLI
Architecture
Terascale 2 (2009−2015)
Kepler (2012−2018)
GPU code name
Blackcomb XTX
N13E-GE
Market segment
Laptop
Laptop
Release date
July 2011
March 2012
Interface
MXM-B (3.0)
-
Supplementary power connectors
None
-
Boost clock speed
-
835 MHz
Core clock speed
715 MHz
790 MHz
Floating-point performance
1,601.6 gflops
-
Manufacturing process technology
40 nm
28 nm
Number of transistors
1,700 million
-
Pipelines / CUDA cores
1120
768
Power consumption (TDP)
100 Watt
-
Texture fill rate
40.04
-
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
2x2 GB
Memory bus width
256 Bit
2x 128 Bit
Memory clock speed
900 MHz
4000 MHz
Memory bandwidth
115.2 GB/s
-
Shared memory
-
-
Display Connectors
No outputs
-
DirectX
11.2 (11_0)
11
CUDA
-
+
OpenCL
1.2
-
OpenGL
4.4
-
Shader Model
5.0
-
Vulkan
N/A
-
Optimus
-
+