GeForce 840M vs Radeon HD 4850 X2

Find out if it is worth upgrading your current GPU setup by comparing GeForce 840M and Radeon HD 4850 X2. Here you can take a closer look at graphics cards specs, such as core clock speed, memory type and size, display connectors, etc. The price, overall benchmark and gaming performances are usually defining factors when it comes to choosing between GeForce 840M and Radeon HD 4850 X2. Make sure that the graphics card has compatible dimensions and will properly fit in your new or current computer case. Also these graphics cards may have different system power recommendations, so take that into consideration and upgrade your PSU if necessary.
Radeon HD 4850 X2

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 4850 X2
Power consumption (TDP) 33 Watt 250 Watt
Interface PCIe 3.0 x8 PCIe 2.0 x16
Supplementary power connectors 1x 6-pin + 1x 8-pin
Memory type DDR3 GDDR3
Maximum RAM amount 4 GB 512 MB
Display Connectors No outputs 4x DVI, 1x S-Video
  Check Price
  • Radeon HD 4850 X2 has 657% more power consumption, than GeForce 840M.
  • GeForce 840M is connected by PCIe 3.0 x8, and Radeon HD 4850 X2 uses PCIe 2.0 x16 interface.
  • Radeon HD 4850 X2 has 508 GB more memory, than GeForce 840M.
  • GeForce 840M is used in Laptops, and Radeon HD 4850 X2 - in Desktops.
  • GeForce 840M is build with Maxwell architecture, and Radeon HD 4850 X2 - with TeraScale.
  • Core clock speed of GeForce 840M is 404 MHz higher, than Radeon HD 4850 X2.
  • GeForce 840M is manufactured by 28 nm process technology, and Radeon HD 4850 X2 - by 55 nm process technology.
  • Memory clock speed of GeForce 840M is 10 MHz higher, than Radeon HD 4850 X2.

Game benchmarks

high / 1080p 1−2 3−4
ultra / 1080p 0−1 2−3
QHD / 1440p 0−1 0−1
low / 720p 12−14 14−16
medium / 1080p 3−4 5−6
The average gaming FPS of Radeon HD 4850 X2 in Assassin's Creed Odyssey is 33% more, than GeForce 840M.

Full Specs

  GeForce 840M Radeon HD 4850 X2
Architecture Maxwell TeraScale
Code name N15S-GT R700
Type Laptop Desktop
Release date 12 March 2014 7 November 2008
Pipelines 384 800
Core clock speed 1029 MHz 625 MHz
Boost Clock 1124 MHz
Transistor count 956 million
Manufacturing process technology 28 nm 55 nm
Texture fill rate 17.98 25.00
Floating-point performance 863.2 gflops 2x 1,000.0 gflops
Length 267 mm
Memory bus width 64 Bit 256 Bit
Memory clock speed 2000 MHz 1990 MHz
Memory bandwidth 16.02 GB/s 63.68 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 +
  Check Price