GeForce GT 755M and GeForce 840M - video card comparison
Passmark - benchmark score GeForce GT 755M vs GeForce 840M
GeForce GT 755M
1739
GeForce 840M
1121
GeForce GT 755M
GeForce 840M
Architecture
Kepler (2012−2018)
Maxwell (2014−2018)
GPU code name
N14P-
N15S-GT
Market segment
Laptop
Laptop
Release date
June 2013
March 2014
Bus support
PCI Express 3.0, PCI Express 2.0
PCI Express 2.0, PCI Express 3.0
Interface
PCIe 3.0 x16
PCIe 3.0 x8
SLI-ready
-
-
Boost clock speed
-
1124 MHz
Core clock speed
980 MHz
1029 MHz
Floating-point performance
752.6 gflops
863.2 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
1,270 million
-
Pipelines / CUDA cores
384
384
Power consumption (TDP)
50 Watt
33 Watt
Texture fill rate
31.36
17.98
Memory type
GDDR5
DDR3
Maximum RAM amount
4 GB
4 GB
Memory bus width
128 Bit
64 Bit
Memory clock speed
5400 MHz
2000 MHz
Memory bandwidth
86.4 GB/s
16.02 GB/s
Shared memory
-
-
Standard memory configuration
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 API
12 (11_0)
CUDA
+
+
OpenCL
1.1
1.2
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
+
-