GeForce GTX 780 and GeForce 840M - video card comparison
Passmark - benchmark score GeForce GTX 780 vs GeForce 840M
GeForce GTX 780
8247
GeForce 840M
1121
GeForce GTX 780
GeForce 840M
Architecture
Kepler (2012−2018)
Maxwell (2014−2018)
GPU code name
GK110
N15S-GT
Market segment
Desktop
Laptop
Release date
May 2013
March 2014
Bus support
PCI Express 3.0
PCI Express 2.0, PCI Express 3.0
Interface
PCIe 3.0 x16
PCIe 3.0 x8
Minimum recommended system power
600 Watt
-
Supplementary power connectors
One 8-pin and one 6-pin
-
Boost clock speed
900 MHz
1124 MHz
Core clock speed
863 MHz
1029 MHz
CUDA cores
2304
-
Floating-point performance
4,156 gflops
863.2 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
7,080 million
-
Pipelines / CUDA cores
2304
384
Power consumption (TDP)
250 Watt
33 Watt
Maximum GPU temperature
95 °C
-
Texture fill rate
160.5 billion/sec
17.98
Memory type
GDDR5
DDR3
Maximum RAM amount
3 GB
4 GB
Memory bus width
384 Bit
64 Bit
Memory clock speed
6008 MHz
2000 MHz
Memory bandwidth
288.4 GB/s
16.02 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
4.3
4.5
Shader Model
5.1
5.1
Vulkan
1.1.126
1.1.126
3D Gaming
+
-
3D Vision
+
-
3D Vision Live
+
-
Blu Ray 3D
+
-
GameWorks
-
+
GPU Boost
-
2.0
Optimus
-
+
PhysX
+
-