GeForce 840A vs GeForce GTX 485M

When choosing between GeForce 840A and GeForce GTX 485M, it is worth examining the specifications of the models in detail. Do they meet the recommended requirements of modern games and software? Storage capacity, form factor, TDP, available ports, warranty and manufacturer support are all important. For example, the size of a PC case can limit the maximum thickness and length of the card. Often, instead of the factory overclocked card and RGB backlight, it is better to choose a reference model with a more efficient GPU. And make sure that your current power supply unit has the correct connection pins (using adapters is not recommended). This GPUs compare tool is meant to help you to choose the best graphics card for your build. Let's find out the difference between GeForce 840A and GeForce GTX 485M.

GeForce GTX 485M is a Laptop Graphics Card

Note: GeForce GTX 485M is only used in laptop graphics. It has 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 GTX 485M here:

Main Specs

  GeForce 840A GeForce GTX 485M
Power consumption (TDP) 33 Watt 100 Watt
Interface PCIe 3.0 x8 MXM-B (3.0)
Supplementary power connectors None
Memory type DDR3 GDDR5
Maximum RAM amount 2 GB 2 GB
Display Connectors No outputs No outputs
  Check Price
  • GeForce GTX 485M has 203% more power consumption, than GeForce 840A.
  • GeForce 840A is connected by PCIe 3.0 x8, and GeForce GTX 485M uses MXM-B (3.0) interface.
  • GeForce 840A and GeForce GTX 485M have maximum RAM of 2 GB.
  • GeForce 840A is used in Desktops, and GeForce GTX 485M - in Laptops.
  • GeForce 840A is build with Maxwell architecture, and GeForce GTX 485M - with Fermi.
  • Core clock speed of GeForce 840A is 645 MHz higher, than GeForce GTX 485M.
  • GeForce 840A is manufactured by 28 nm process technology, and GeForce GTX 485M - by 40 nm process technology.
  • Memory clock speed of GeForce 840A is 502 MHz higher, than GeForce GTX 485M.

Game benchmarks

high / 1080p 3−4 12−14
ultra / 1080p 2−3 7−8
QHD / 1440p 0−1 2−3
low / 720p 14−16 24−27
medium / 1080p 5−6 14−16
The average gaming FPS of GeForce GTX 485M in Assassin's Creed Odyssey is 150% more, than GeForce 840A.

Full Specs

  GeForce 840A GeForce GTX 485M
Architecture Maxwell Fermi
Code name GM108 N12E-GTX-A1
Type Desktop Laptop
Release date 17 March 2014 6 January 2010
Pipelines 384 384
Core clock speed 1029 MHz 384
Boost Clock 1124 MHz
Transistor count 1,950 million
Manufacturing process technology 28 nm 40 nm
Texture fill rate 17.98 36.8 billion/sec
Floating-point performance 863.2 gflops 883.2 gflops
Memory bus width 64 Bit 256 Bit
Memory clock speed 2002 MHz 1500 MHz
Memory bandwidth 16.02 GB/s 96.0 GB/s
Shared memory -
DirectX 12 (11_0) 12 (11_0)
Shader Model 5.1 5.1
OpenGL 4.6 4.5
OpenCL 1.2 1.1
Vulkan 1.1.126 N/A
CUDA 5.0 +
Bus support PCI-E 2.0
SLI options +
Maximum VGA resolution 2048x1536
Laptop size large
  Check Price