GeForce 840A vs Mobility Radeon HD 4850

When comparing GeForce 840A and Mobility Radeon HD 4850, 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 840A and Mobility Radeon HD 4850 is the price. Does the additional cost justify the performance hit? Our comparison should help you make the right decision.

Mobility Radeon HD 4850 is a Laptop Graphics Card

Note: Mobility Radeon HD 4850 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 Mobility Radeon HD 4850 here:

Main Specs

  GeForce 840A Mobility Radeon HD 4850
Power consumption (TDP) 33 Watt
Interface PCIe 3.0 x8 PCIe 2.0 x16
Memory type DDR3 GDDR3
Maximum RAM amount 2 GB 1 GB
Display Connectors No outputs No outputs
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  • GeForce 840A is connected by PCIe 3.0 x8, and Mobility Radeon HD 4850 uses PCIe 2.0 x16 interface.
  • GeForce 840A has 1 GB more memory, than Mobility Radeon HD 4850.
  • GeForce 840A is used in Desktops, and Mobility Radeon HD 4850 - in Laptops.
  • GeForce 840A is build with Maxwell architecture, and Mobility Radeon HD 4850 - with Terascale 1.
  • Core clock speed of GeForce 840A is 529 MHz higher, than Mobility Radeon HD 4850.
  • GeForce 840A is manufactured by 28 nm process technology, and Mobility Radeon HD 4850 - by 55 nm process technology.
  • Memory clock speed of GeForce 840A is 1152 MHz higher, than Mobility Radeon HD 4850.

Game benchmarks

high / 1080p 3−4 3−4
ultra / 1080p 2−3 1−2
QHD / 1440p 0−1 0−1
low / 720p 14−16 14−16
medium / 1080p 5−6 5−6
GeForce 840A and Mobility Radeon HD 4850 have the same average FPS in Assassin's Creed Odyssey.

Full Specs

  GeForce 840A Mobility Radeon HD 4850
Architecture Maxwell Terascale 1
Code name GM108 M98
Type Desktop Laptop
Release date 17 March 2014 9 January 2009
Pipelines 384 800
Core clock speed 1029 MHz 500 MHz
Boost Clock 1124 MHz
Transistor count 956 million
Manufacturing process technology 28 nm 55 nm
Texture fill rate 17.98 20.00
Floating-point performance 863.2 gflops 800.0 gflops
Memory bus width 64 Bit 256 Bit
Memory clock speed 2002 MHz 850 MHz
Memory bandwidth 16.02 GB/s 54.4 GB/s
Shared memory -
DirectX 12 (11_0) 10.1 (10_1)
Shader Model 5.1 4.1
OpenGL 4.6 3.3
OpenCL 1.2 1.1
Vulkan 1.1.126 N/A
CUDA 5.0
Laptop size large
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