Radeon HD 4770 vs Radeon R8 M445DX

If you are going to buy a new graphics card and are choosing between Radeon HD 4770 and Radeon R8 M445DX, 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 R8 M445DX, check out specs charts below.

Radeon R8 M445DX is a Laptop Graphics Card

Note: Radeon R8 M445DX 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 R8 M445DX here:

Main Specs

  Radeon HD 4770 Radeon R8 M445DX
Power consumption (TDP) 80 Watt
Interface PCIe 2.0 x16 IGP
Supplementary power connectors 1x 6-pin
Memory type GDDR5 DDR4/DDR3
Maximum RAM amount 512 MB
Display Connectors 2x DVI, 1x S-Video No outputs
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  • Radeon HD 4770 is connected by PCIe 2.0 x16, and Radeon R8 M445DX uses IGP interface.
  • Radeon HD 4770 is used in Desktops, and Radeon R8 M445DX - in Laptops.
  • Radeon HD 4770 is build with TeraScale architecture, and Radeon R8 M445DX - with GCN.
  • Core clock speed of Radeon HD 4770 is 30 MHz higher, than Radeon R8 M445DX.
  • Radeon HD 4770 is manufactured by 40 nm process technology, and Radeon R8 M445DX - by 28 nm process technology.
  • Memory clock speed of Radeon HD 4770 is 2267 MHz higher, than Radeon R8 M445DX.

Game benchmarks

high / 1080p 1−2 0−1
ultra / 1080p 0−1
QHD / 1440p 0−1 0−1
low / 720p 10−12 1−2
medium / 1080p 2−3 0−1
The average gaming FPS of Radeon HD 4770 in Assassin's Creed Odyssey is 1000% more, than Radeon R8 M445DX.

Full Specs

  Radeon HD 4770 Radeon R8 M445DX
Architecture TeraScale GCN
Code name RV740 Meso
Type Desktop Laptop
Release date 28 April 2009 1 June 2016
Pipelines 640 704
Core clock speed 750 MHz 720 / 1020 MHz
Boost Clock 1021 MHz
Transistor count 826 million 1,550 million
Manufacturing process technology 40 nm 28 nm
Texture fill rate 24.00 20.42
Floating-point performance 960.0 gflops
Length 203 mm
Memory bus width 128 Bit 128 + 64 Bit
Memory clock speed 3200 MHz 933 / 1000 MHz
Memory bandwidth 51.2 GB/s
Shared memory -
DirectX 10.1 (10_1) 12 (12_0)
Shader Model 4.1 6.0
OpenGL 3.3 4.6
OpenCL 1.1 2.0
Vulkan N/A 1.2.131
Laptop size medium sized
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