GeForce 820A vs Radeon HD 4770

If you are going to buy a new graphics card and are choosing between GeForce 820A and Radeon HD 4770, 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 GeForce 820A stacks up against Radeon HD 4770, check out specs charts below.
GeForce 820A
Radeon HD 4770

Main Specs

  GeForce 820A Radeon HD 4770
Power consumption (TDP) 15 Watt 80 Watt
Interface PCIe 2.0 x16 PCIe 2.0 x16
Supplementary power connectors 1x 6-pin
Memory type DDR3 GDDR5
Maximum RAM amount 1 GB 512 MB
Display Connectors No outputs 2x DVI, 1x S-Video
 
  • Radeon HD 4770 has 433% more power consumption, than GeForce 820A.
  • Both video cards are using PCIe 2.0 x16 interface connection to a motherboard.
  • Radeon HD 4770 has 511 GB more memory, than GeForce 820A.
  • Both cards are used in Desktops.
  • GeForce 820A is build with Fermi 2.0 architecture, and Radeon HD 4770 - with TeraScale.
  • Core clock speed of GeForce 820A is 25 MHz higher, than Radeon HD 4770.
  • GeForce 820A is manufactured by 28 nm process technology, and Radeon HD 4770 - by 40 nm process technology.
  • Memory clock speed of Radeon HD 4770 is 1400 MHz higher, than GeForce 820A.

Game benchmarks

high / 1080p 0−1 1−2
ultra / 1080p 0−1
QHD / 1440p 0−1 0−1
low / 720p 1−2 10−12
medium / 1080p 0−1 2−3
The average gaming FPS of Radeon HD 4770 in Assassin's Creed Odyssey is 1000% more, than GeForce 820A.

Full Specs

  GeForce 820A Radeon HD 4770
Architecture Fermi 2.0 TeraScale
Code name GF117 RV740
Type Desktop Desktop
Release date 17 March 2014 28 April 2009
Pipelines 96 640
Core clock speed 775 MHz 750 MHz
Transistor count 585 million 826 million
Manufacturing process technology 28 nm 40 nm
Texture fill rate 12.40 24.00
Floating-point performance 297.6 gflops 960.0 gflops
Length 203 mm
Memory bus width 64 Bit 128 Bit
Memory clock speed 1800 MHz 3200 MHz
Memory bandwidth 14.4 GB/s 51.2 GB/s
DirectX 12 (11_0) 10.1 (10_1)
Shader Model 5.1 4.1
OpenGL 4.6 3.3
OpenCL 1.1 1.1
Vulkan N/A N/A
CUDA 2.1