GeForce GTX 680 and GeForce 940MX - video card comparison
Passmark - benchmark score GeForce GTX 680 vs GeForce 940MX
GeForce GTX 680
5721
GeForce 940MX
1561
GeForce GTX 680
GeForce 940MX
Architecture
Kepler (2012−2018)
Maxwell (2014−2018)
GPU code name
GK104
N16S-GTR-B/S
Market segment
Desktop
Laptop
Release date
March 2012
March 2016
Bus support
PCI Express 3.0
PCI Express 3.0
Interface
PCIe 3.0 x16
PCIe 3.0 x8
Supplementary power connectors
Two 6-pin
None
SLI options
+
-
Boost clock speed
1058 MHz
1242 MHz
Core clock speed
1006 MHz
1122 MHz
CUDA cores
1536
-
Floating-point performance
3,090.4 gflops
762.6 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
3,540 million
1,870 million
Pipelines / CUDA cores
1536
384
Power consumption (TDP)
195 Watt
23 Watt
Texture fill rate
128.8 billion/sec
23.83
Memory type
GDDR5
DDR3, GDDR5
Maximum RAM amount
2048 MB
4 GB
Memory bus width
256-bit GDDR5
64 Bit
Memory clock speed
6000 MHz
4000 MHz
Memory bandwidth
192.2 GB/s
40.1 GB/s
Shared memory
-
-
Display Connectors
One Dual Link DVI-I, One Dual Link DVI-D, One HDMI, One DisplayPort
No outputs
Multi monitor support
4 displays
-
HDMI
+
-
HDCP
+
-
Maximum VGA resolution
2048x1536
-
Audio input for HDMI
Internal
-
DirectX
12 (11_0)
12 (11_0)
CUDA
+
+
OpenCL
1.2
1.2
OpenGL
4.2
4.5
Shader Model
5.1
5.1
Vulkan
1.1.126
1.1
GameWorks
-
+
GPU Boost
-
2.0
Optimus
-
+