GeForce 840M vs Radeon HD 5870

If you are going to buy a new graphics card and are choosing between GeForce 840M and Radeon HD 5870, there are a couple of things to consider. Cards with more VRAM in general perform better and allow you to play on higher graphics settings. Size also makes a difference. A model with a large heatsink can occupy up to three expansion slots on a motherboard. Be sure you have enough room in your PC case. When comparing GPUs with different architectures, more processing cores and even higher TFLOPS will not always translate to better performance. To help you decide which GPU you need, we have measured frame rates in a number of popular games. For more on how the GeForce 840M stacks up against Radeon HD 5870, check out specs charts below.

GeForce 840M is a Laptop Graphics Card

Note: GeForce 840M 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 840M here:

Main Specs

  GeForce 840M Radeon HD 5870
Power consumption (TDP) 33 Watt 188 Watt
Interface PCIe 3.0 x8 PCIe 2.0 x16
Supplementary power connectors 2x 6-pin
Memory type DDR3 GDDR5
Maximum RAM amount 4 GB 1 GB
Display Connectors No outputs 2x DVI, 1x HDMI, 1x DisplayPort
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  • Radeon HD 5870 has 469% more power consumption, than GeForce 840M.
  • GeForce 840M is connected by PCIe 3.0 x8, and Radeon HD 5870 uses PCIe 2.0 x16 interface.
  • GeForce 840M has 3 GB more memory, than Radeon HD 5870.
  • GeForce 840M is used in Laptops, and Radeon HD 5870 - in Desktops.
  • GeForce 840M is build with Maxwell architecture, and Radeon HD 5870 - with TeraScale 2.
  • Core clock speed of GeForce 840M is 179 MHz higher, than Radeon HD 5870.
  • GeForce 840M is manufactured by 28 nm process technology, and Radeon HD 5870 - by 40 nm process technology.
  • Memory clock speed of Radeon HD 5870 is 2800 MHz higher, than GeForce 840M.

Game benchmarks

high / 1080p 1−2 10−12
ultra / 1080p 0−1 6−7
QHD / 1440p 0−1 1−2
low / 720p 12−14 24−27
medium / 1080p 3−4 14−16
The average gaming FPS of Radeon HD 5870 in Assassin's Creed Odyssey is 183% more, than GeForce 840M.

Full Specs

  GeForce 840M Radeon HD 5870
Architecture Maxwell TeraScale 2
Code name N15S-GT Cypress
Type Laptop Desktop
Release date 12 March 2014 23 September 2009
Pipelines 384 1600
Core clock speed 1029 MHz 850 MHz
Boost Clock 1124 MHz
Transistor count 2,154 million
Manufacturing process technology 28 nm 40 nm
Texture fill rate 17.98 68.00
Floating-point performance 863.2 gflops 2,720.0 gflops
Length 282 mm
Memory bus width 64 Bit 256 Bit
Memory clock speed 2000 MHz 4800 MHz
Memory bandwidth 16.02 GB/s 153.6 GB/s
Shared memory -
DirectX 12 (11_0) 11.2 (11_0)
Shader Model 5.1 5.0
OpenGL 4.5 4.4
OpenCL 1.2 1.2
Vulkan 1.1.126 N/A
CUDA +
Bus support PCI Express 2.0, PCI Express 3.0
Bitcoin / BTC (SHA256) 92 Mh/s
Laptop size medium sized
Optimus +
GPU Boost 2.0
GameWorks +
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