GeForce 840M and GeForce GT 745M - video card comparison
Passmark - benchmark score GeForce 840M vs GeForce GT 745M
GeForce 840M
1121
GeForce GT 745M
1125
GeForce 840M
GeForce GT 745M
Architecture
Maxwell (2014−2018)
Kepler (2012−2018)
GPU code name
N15S-GT
N14P-LP/GS
Market segment
Laptop
Laptop
Release date
March 2014
April 2013
Bus support
PCI Express 2.0, PCI Express 3.0
PCI Express 3.0
Interface
PCIe 3.0 x8
PCIe 3.0 x16
Boost clock speed
1124 MHz
-
Core clock speed
1029 MHz
837 MHz
Floating-point performance
863.2 gflops
642.8 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
-
1,270 million
Pipelines / CUDA cores
384
384
Power consumption (TDP)
33 Watt
45 Watt
Texture fill rate
17.98
17.57
Memory type
DDR3
DDR3, GDDR5
Maximum RAM amount
4 GB
2 GB
Memory bus width
64 Bit
128 Bit
Memory clock speed
2000 MHz
1800 MHz
Memory bandwidth
16.02 GB/s
64 GB/s
Shared memory
-
-
Standard memory configuration
-
DDR3/GDDR5
Display Connectors
No outputs
No outputs
eDP 1.2 signal support
-
Up to 3840x2160
LVDS signal support
-
Up to 1920x1200
VGA аnalog display support
-
Up to 2048x1536
DisplayPort Multimode (DP++) support
-
Up to 3840x2160
HDCP content protection
-
+
HDMI
-
+
7.1 channel HD audio on HDMI
-
+
DirectX
12 (11_0)
12 API
CUDA
+
+
OpenCL
1.2
1.1
OpenGL
4.5
4.5
Shader Model
5.1
5.1
Vulkan
1.1.126
1.1.126
3D Vision / 3DTV Play
-
+
Blu-Ray 3D Support
-
+
GameWorks
+
-
GPU Boost
2.0
-
H.264, VC1, MPEG2 1080p video decoder
-
+
Optimus
+
+
TrueHD and DTS-HD audio bitstreaming
-
+