GeForce GTX 680 Mac Edition and Radeon HD 6770M Mac Edition - video card comparison
GeForce GTX 680 Mac Edition
Radeon HD 6770M Mac Edition
Architecture
Kepler (2012−2018)
TeraScale 2 (2009−2015)
GPU code name
GK104
Whistler
Market segment
Desktop
Desktop
Release date
April 2013
January 2011
Interface
PCIe 2.0 x16
MXM-A (3.0)
Supplementary power connectors
2x 6-pin
-
Boost clock speed
1058 MHz
-
Core clock speed
1006 MHz
725 MHz
Floating-point performance
3,250 gflops
696.0 gflops
Manufacturing process technology
28 nm
40 nm
Number of transistors
3,540 million
716 million
Pipelines / CUDA cores
1536
480
Power consumption (TDP)
195 Watt
35 Watt
Texture fill rate
135.4
17.40
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
512 MB
Memory bus width
256 Bit
128 Bit
Memory clock speed
6008 MHz
3600 MHz
Memory bandwidth
192.3 GB/s
57.6 GB/s
Display Connectors
2x DVI, 1x HDMI, 1x DisplayPort
No outputs
HDMI
+
-
DirectX
12 (11_0)
11.2 (11_0)
CUDA
3.0
-
OpenCL
1.2
1.2
OpenGL
4.6
4.4
Shader Model
5.1
5.0
Vulkan
1.1.126
N/A