Radeon HD 6850M vs Radeon HD 7790

If you are going to buy a new graphics card and are choosing between Radeon HD 6850M and Radeon HD 7790, 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 Radeon HD 6850M stacks up against Radeon HD 7790, check out specs charts below.

Radeon HD 6850M is a Laptop Graphics Card

Note: Radeon HD 6850M 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 Radeon HD 6850M here:

Main Specs

  Radeon HD 6850M Radeon HD 7790
Power consumption (TDP) 50 Watt 85 Watt
Interface PCIe 2.0 x16 PCIe 3.0 x16
Supplementary power connectors 1x 6-pin
Memory type DDR3, GDDR5 GDDR5
Maximum RAM amount 1 GB 1 GB
Display Connectors No outputs 1x DVI, 1x HDMI, 2x mini-DisplayPort
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  • Radeon HD 7790 has 70% more power consumption, than Radeon HD 6850M.
  • Radeon HD 6850M is connected by PCIe 2.0 x16, and Radeon HD 7790 uses PCIe 3.0 x16 interface.
  • Radeon HD 6850M and Radeon HD 7790 have maximum RAM of 1 GB.
  • Radeon HD 6850M is used in Laptops, and Radeon HD 7790 - in Desktops.
  • Radeon HD 6850M is build with Terascale 2 architecture, and Radeon HD 7790 - with GCN 2.0.
  • Core clock speed of Radeon HD 7790 is 425 MHz higher, than Radeon HD 6850M.
  • Radeon HD 6850M is manufactured by 40 nm process technology, and Radeon HD 7790 - by 28 nm process technology.
  • Memory clock speed of Radeon HD 7790 is 5200 MHz higher, than Radeon HD 6850M.

Game benchmarks

high / 1080p 2−3 16−18
ultra / 1080p 0−1 9−10
QHD / 1440p 0−1 4−5
4K / 2160p 4−5
low / 720p 12−14 30−35
medium / 1080p 3−4 20−22
The average gaming FPS of Radeon HD 7790 in Assassin's Creed Odyssey is 283% more, than Radeon HD 6850M.

Full Specs

  Radeon HD 6850M Radeon HD 7790
Architecture Terascale 2 GCN 2.0
Code name Granville Pro/LP Bonaire
Type Laptop Desktop
Release date 6 January 2011 22 March 2013
Pipelines 800 896
Core clock speed 575 / 675 MHz 1000 MHz
Transistor count 1,040 million 2,080 million
Manufacturing process technology 40 nm 28 nm
Texture fill rate 27.00 56.00
Floating-point performance 1,080.0 gflops 1,792 gflops
Length 183 mm
Memory bus width 128 Bit 128 Bit
Memory clock speed 800 MHz 6000 MHz
Memory bandwidth 25.6 GB/s 96 GB/s
Shared memory -
DirectX 11.2 (11_0) 12 (12_0)
Shader Model 5.0 6.3
OpenGL 4.4 4.6
OpenCL 1.2 2.0
Vulkan N/A 1.2.131
Bitcoin / BTC (SHA256) 218 Mh/s
Laptop size large
Ethereum / ETH (DaggerHashimoto) 5.2 Mh/s
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