GeForce 840M vs GeForce GT 755M

When comparing GeForce 840M and GeForce GT 755M, we look primarily at benchmarks and game tests. But it is not only about the numbers. Often you can find third-party models with higher clock speeds, better cooling, or a customizable RGB lighting. Not all of them will have all the features you need. Another thing to consider is the port selection. Most graphics cards have at least one DisplayPort and HDMI interface, but some monitors require DVI. Before you buy, check the TDP of the graphics card - this characteristic will help you estimate the consumption of the graphics card. You may even have to upgrade your PSU to meet its requirements. An important factor when choosing between GeForce 840M and GeForce GT 755M is the price. Does the additional cost justify the performance hit? Our comparison should help you make the right decision.

GeForce 840M and GeForce GT 755M are Laptop Graphics Cards

Note: GeForce 840M and GeForce GT 755M are only used in laptop graphics. They have lower GPU clock speed compared to the desktop variant, which results in lower power consumption, but also 10-30% lower gaming performance. Check available laptop models with GeForce 840M or GeForce GT 755M here:

Main Specs

  GeForce 840M GeForce GT 755M
Power consumption (TDP) 33 Watt 50 Watt
Interface PCIe 3.0 x8 PCIe 3.0 x16
Memory type DDR3 GDDR5
Maximum RAM amount 4 GB 4 GB
Display Connectors No outputs No outputs
  Check Price Check Price
  • GeForce GT 755M has 51% more power consumption, than GeForce 840M.
  • GeForce 840M is connected by PCIe 3.0 x8, and GeForce GT 755M uses PCIe 3.0 x16 interface.
  • GeForce 840M and GeForce GT 755M have maximum RAM of 4 GB.
  • Both cards are used in Laptops.
  • GeForce 840M is build with Maxwell architecture, and GeForce GT 755M - with Kepler.
  • Core clock speed of GeForce 840M is 49 MHz higher, than GeForce GT 755M.
  • GeForce 840M and GeForce GT 755M are manufactured by 28 nm process technology.
  • Memory clock speed of GeForce GT 755M is 3400 MHz higher, than GeForce 840M.

Game benchmarks

high / 1080p 1−2 7−8
ultra / 1080p 0−1 4−5
QHD / 1440p 0−1 0−1
low / 720p 12−14 18−20
medium / 1080p 3−4 9−10
The average gaming FPS of GeForce GT 755M in Assassin's Creed Odyssey is 100% more, than GeForce 840M.

Full Specs

  GeForce 840M GeForce GT 755M
Architecture Maxwell Kepler
Code name N15S-GT N14P-
Type Laptop Laptop
Release date 12 March 2014 25 June 2013
Pipelines 384 384
Core clock speed 1029 MHz 980 MHz
Boost Clock 1124 MHz
Transistor count 1,270 million
Manufacturing process technology 28 nm 28 nm
Texture fill rate 17.98 31.36
Floating-point performance 863.2 gflops 752.6 gflops
Memory bus width 64 Bit 128 Bit
Memory clock speed 2000 MHz 5400 MHz
Memory bandwidth 16.02 GB/s 86.4 GB/s
Shared memory - -
DirectX 12 (11_0) 12 API
Shader Model 5.1 5.1
OpenGL 4.5 4.5
OpenCL 1.2 1.1
Vulkan 1.1.126 1.1.126
CUDA + +
Bus support PCI Express 2.0, PCI Express 3.0 PCI Express 3.0, PCI Express 2.0
HDMI +
Bitcoin / BTC (SHA256) 92 Mh/s 27 Mh/s
Laptop size medium sized medium sized
Standard memory configuration GDDR5
eDP 1.2 signal support Up to 3840x2160
LVDS signal support Up to 1920x1200
DisplayPort Multimode (DP++) support Up to 3840x2160
HDCP content protection +
7.1 channel HD audio on HDMI +
TrueHD and DTS-HD audio bitstreaming +
H.264, VC1, MPEG2 1080p video decoder +
Optimus + +
Blu-Ray 3D Support +
3D Vision / 3DTV Play +
GPU Boost 2.0
GameWorks +
  Check Price Check Price