Radeon HD 6970M and GeForce GTX 680MX Mac Edition - video card comparison
Radeon HD 6970M
GeForce GTX 680MX Mac Edition
Architecture
Terascale 2 (2009−2015)
Kepler (2012−2018)
GPU code name
Blackcomb XT
GK104
Market segment
Laptop
Desktop
Release date
January 2011
October 2012
Interface
MXM-B (3.0)
PCIe 3.0 x16
Supplementary power connectors
None
-
Core clock speed
680 MHz
719 MHz
Floating-point performance
1,305.6 gflops
2,209 gflops
Manufacturing process technology
40 nm
28 nm
Number of transistors
1,700 million
3,540 million
Pipelines / CUDA cores
960
1536
Power consumption (TDP)
75-100 Watt
122 Watt
Texture fill rate
32.64
92.03
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
2 GB
Memory bus width
256 Bit
256 Bit
Memory clock speed
900 MHz
5000 MHz
Memory bandwidth
115.2 GB/s
160.0 GB/s
Shared memory
-
-
Display Connectors
No outputs
No outputs
DirectX
11.2 (11_0)
12 (11_0)
CUDA
-
3.0
OpenCL
1.2
1.2
OpenGL
4.4
4.6
Shader Model
5.0
5.1
Vulkan
N/A
1.1.126