Radeon HD 4770 vs Radeon HD 6850M

If you are going to buy a new graphics card and are choosing between Radeon HD 4770 and Radeon HD 6850M, 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 4770 stacks up against Radeon HD 6850M, 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 4770 Radeon HD 6850M
Power consumption (TDP) 80 Watt 50 Watt
Interface PCIe 2.0 x16 PCIe 2.0 x16
Supplementary power connectors 1x 6-pin
Memory type GDDR5 DDR3, GDDR5
Maximum RAM amount 512 MB 1 GB
Display Connectors 2x DVI, 1x S-Video No outputs
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  • Radeon HD 4770 has 60% more power consumption, than Radeon HD 6850M.
  • Both video cards are using PCIe 2.0 x16 interface connection to a motherboard.
  • Radeon HD 4770 has 511 GB more memory, than Radeon HD 6850M.
  • Radeon HD 4770 is used in Desktops, and Radeon HD 6850M - in Laptops.
  • Radeon HD 4770 is build with TeraScale architecture, and Radeon HD 6850M - with Terascale 2.
  • Core clock speed of Radeon HD 4770 is 175 MHz higher, than Radeon HD 6850M.
  • Radeon HD 4770 and Radeon HD 6850M are manufactured by 40 nm process technology.
  • Memory clock speed of Radeon HD 4770 is 2400 MHz higher, than Radeon HD 6850M.

Game benchmarks

high / 1080p 1−2 2−3
ultra / 1080p 0−1 0−1
QHD / 1440p 0−1 0−1
low / 720p 10−12 12−14
medium / 1080p 2−3 3−4
The average gaming FPS of Radeon HD 6850M in Assassin's Creed Odyssey is 20% more, than Radeon HD 4770.

Full Specs

  Radeon HD 4770 Radeon HD 6850M
Architecture TeraScale Terascale 2
Code name RV740 Granville Pro/LP
Type Desktop Laptop
Release date 28 April 2009 6 January 2011
Pipelines 640 800
Core clock speed 750 MHz 575 / 675 MHz
Transistor count 826 million 1,040 million
Manufacturing process technology 40 nm 40 nm
Texture fill rate 24.00 27.00
Floating-point performance 960.0 gflops 1,080.0 gflops
Length 203 mm
Memory bus width 128 Bit 128 Bit
Memory clock speed 3200 MHz 800 MHz
Memory bandwidth 51.2 GB/s 25.6 GB/s
Shared memory -
DirectX 10.1 (10_1) 11.2 (11_0)
Shader Model 4.1 5.0
OpenGL 3.3 4.4
OpenCL 1.1 1.2
Vulkan N/A N/A
Laptop size large
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