Radeon HD 6950 and GeForce GTX 680MX Mac Edition - video card comparison
Radeon HD 6950
GeForce GTX 680MX Mac Edition
Architecture
TeraScale 3 (2010−2013)
Kepler (2012−2018)
GPU code name
Cayman
GK104
Market segment
Desktop
Desktop
Release date
December 2010
October 2012
Bus support
PCIe 2.0 x16
-
Interface
PCIe 2.0 x16
PCIe 3.0 x16
Supplementary power connectors
2x 6-pin
-
Boost clock speed
800 MHz
-
Core clock speed
-
719 MHz
Floating-point performance
2,252.8 gflops
2,209 gflops
Manufacturing process technology
40 nm
28 nm
Number of transistors
2,640 million
3,540 million
Pipelines / CUDA cores
1408
1536
Power consumption (TDP)
500 Watt
122 Watt
Texture fill rate
70.40
92.03
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
2 GB
Memory bus width
256 Bit
256 Bit
Memory clock speed
1250 MHz
5000 MHz
Memory bandwidth
-
160.0 GB/s
Display Connectors
2x DVI, 1x HDMI, 2x mini-DisplayPort
No outputs
Eyefinity
1
-
HDMI
+
-
DisplayPort support
-
-
DirectX
DirectX® 11
12 (11_0)
CUDA
-
3.0
Mantle
-
-
OpenCL
1.2
1.2
OpenGL
4.4
4.6
Shader Model
5.0
5.1
Vulkan
-
1.1.126
AppAcceleration
-
-
CrossFire
1
-
Enduro
-
-
HD3D
-
-
PowerTune
-
-
TrueAudio
-
-
ZeroCore
-
-