GeForce GTX 680MX and GeForce GT 755M Mac Edition - video card comparison
GeForce GTX 680MX
GeForce GT 755M Mac Edition
Architecture
Kepler (2012−2018)
Kepler (2012−2018)
GPU code name
-
GK107
Market segment
Laptop
Desktop
Release date
October 2012
November 2013
Bus support
PCI Express 3.0
-
Interface
-
PCIe 3.0 x16
SLI options
+
-
Core clock speed
720 MHz
1085 MHz
CUDA cores
1536
-
Floating-point performance
-
833.3 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
3540 Million
1,270 million
Pipelines / CUDA cores
1536
384
Power consumption (TDP)
122 Watt
50 Watt
Texture fill rate
92.2 billion/sec
34.72
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
1 GB
Memory bus width
256 Bit
128 Bit
Memory clock speed
2500 MHz
5000 MHz
Memory bandwidth
160 GB/s
80 GB/s
Shared memory
-
-
Display Connectors
-
No outputs
DirectX
12 API
12 (11_0)
CUDA
+
3.0
OpenCL
1.1
1.2
OpenGL
4.5
4.6
Shader Model
-
5.1
Vulkan
-
1.1.126
3D Vision
+
-
Optimus
+
-