GeForce GTX 680MX and GeForce 620M - video card comparison
GeForce GTX 680MX
GeForce 620M
Architecture
Kepler (2012−2018)
Fermi 2.0 (2010−2014)
GPU code name
-
GF117
Market segment
Laptop
Desktop
Release date
October 2012
March 2012
Bus support
PCI Express 3.0
-
Interface
-
PCIe 2.0 x16
SLI options
+
-
Core clock speed
720 MHz
625 MHz
CUDA cores
1536
-
Floating-point performance
-
240.0 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
3540 Million
585 million
Pipelines / CUDA cores
1536
96
Power consumption (TDP)
122 Watt
15 Watt
Texture fill rate
92.2 billion/sec
10.00
Memory type
GDDR5
DDR3
Maximum RAM amount
2 GB
1 GB
Memory bus width
256 Bit
64 Bit
Memory clock speed
2500 MHz
1800 MHz
Memory bandwidth
160 GB/s
14.4 GB/s
Shared memory
-
-
Display Connectors
-
No outputs
DirectX
12 API
12 (11_0)
CUDA
+
2.1
OpenCL
1.1
1.1
OpenGL
4.5
4.6
Shader Model
-
5.1
Vulkan
-
N/A
3D Vision
+
-
Optimus
+
-