GeForce GTX 770M and GeForce 840M - video card comparison
Passmark - benchmark score GeForce GTX 770M vs GeForce 840M
GeForce GTX 770M
2886
GeForce 840M
1121
GeForce GTX 770M
GeForce 840M
Architecture
Kepler (2012−2018)
Maxwell (2014−2018)
GPU code name
N14E-GS
N15S-GT
Market segment
Laptop
Laptop
Release date
May 2013
March 2014
Bus support
PCI Express 3.0, PCI Express 2.0
PCI Express 2.0, PCI Express 3.0
Interface
MXM-B (3.0)
PCIe 3.0 x8
Supplementary power connectors
None
-
SLI options
+
-
Boost clock speed
797 MHz
1124 MHz
Core clock speed
811 MHz
1029 MHz
CUDA cores
960
-
Floating-point performance
1,530 gflops
863.2 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
2,540 million
-
Pipelines / CUDA cores
960
384
Power consumption (TDP)
75 Watt
33 Watt
Texture fill rate
63.76
17.98
Memory type
GDDR5
DDR3
Maximum RAM amount
3 GB
4 GB
Memory bus width
192 Bit
64 Bit
Memory clock speed
2000 MHz
2000 MHz
Memory bandwidth
96.0 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
+
-