GeForce 840M vs Radeon HD 4830

If you are going to buy a new graphics card and are choosing between GeForce 840M and Radeon HD 4830, 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 4830, 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 4830
Power consumption (TDP) 33 Watt 95 Watt
Interface PCIe 3.0 x8 PCIe 2.0 x16
Supplementary power connectors 1x 6-pin
Memory type DDR3 GDDR3
Maximum RAM amount 4 GB 512 MB
Display Connectors No outputs 2x DVI, 1x S-Video
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  • Radeon HD 4830 has 187% more power consumption, than GeForce 840M.
  • GeForce 840M is connected by PCIe 3.0 x8, and Radeon HD 4830 uses PCIe 2.0 x16 interface.
  • Radeon HD 4830 has 508 GB more memory, than GeForce 840M.
  • GeForce 840M is used in Laptops, and Radeon HD 4830 - in Desktops.
  • GeForce 840M is build with Maxwell architecture, and Radeon HD 4830 - with TeraScale.
  • Core clock speed of GeForce 840M is 454 MHz higher, than Radeon HD 4830.
  • GeForce 840M is manufactured by 28 nm process technology, and Radeon HD 4830 - by 55 nm process technology.
  • Memory clock speed of GeForce 840M is 200 MHz higher, than Radeon HD 4830.

Game benchmarks

high / 1080p 1−2 0−1
ultra / 1080p 0−1 0−1
QHD / 1440p 0−1 0−1
low / 720p 12−14 10−12
medium / 1080p 3−4 2−3
The average gaming FPS of GeForce 840M in Assassin's Creed Odyssey is 33% more, than Radeon HD 4830.

Full Specs

  GeForce 840M Radeon HD 4830
Architecture Maxwell TeraScale
Code name N15S-GT RV770
Type Laptop Desktop
Release date 12 March 2014 21 October 2008
Pipelines 384 640
Core clock speed 1029 MHz 575 MHz
Boost Clock 1124 MHz
Transistor count 956 million
Manufacturing process technology 28 nm 55 nm
Texture fill rate 17.98 18.40
Floating-point performance 863.2 gflops 736.0 gflops
Length 246 mm
Memory bus width 64 Bit 256 Bit
Memory clock speed 2000 MHz 1800 MHz
Memory bandwidth 16.02 GB/s 57.6 GB/s
Shared memory -
DirectX 12 (11_0) 10.1 (10_1)
Shader Model 5.1 4.1
OpenGL 4.5 3.3
OpenCL 1.2 1.1
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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