GeForce 820A vs Radeon HD 7790

If you are going to buy a new graphics card and are choosing between GeForce 820A 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 GeForce 820A stacks up against Radeon HD 7790, check out specs charts below.

Main Specs

  GeForce 820A Radeon HD 7790
Power consumption (TDP) 15 Watt 85 Watt
Interface PCIe 2.0 x16 PCIe 3.0 x16
Supplementary power connectors 1x 6-pin
Memory type DDR3 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 466% more power consumption, than GeForce 820A.
  • GeForce 820A is connected by PCIe 2.0 x16, and Radeon HD 7790 uses PCIe 3.0 x16 interface.
  • GeForce 820A and Radeon HD 7790 have maximum RAM of 1 GB.
  • Both cards are used in Desktops.
  • GeForce 820A is build with Fermi 2.0 architecture, and Radeon HD 7790 - with GCN 2.0.
  • Core clock speed of Radeon HD 7790 is 225 MHz higher, than GeForce 820A.
  • GeForce 820A and Radeon HD 7790 are manufactured by 28 nm process technology.
  • Memory clock speed of Radeon HD 7790 is 4200 MHz higher, than GeForce 820A.

Game benchmarks

high / 1080p 0−1 16−18
ultra / 1080p 9−10
QHD / 1440p 0−1 4−5
4K / 2160p 4−5
low / 720p 1−2 30−35
medium / 1080p 0−1 20−22
The average gaming FPS of Radeon HD 7790 in Assassin's Creed Odyssey is 3100% more, than GeForce 820A.

Full Specs

  GeForce 820A Radeon HD 7790
Architecture Fermi 2.0 GCN 2.0
Code name GF117 Bonaire
Type Desktop Desktop
Release date 17 March 2014 22 March 2013
Pipelines 96 896
Core clock speed 775 MHz 1000 MHz
Transistor count 585 million 2,080 million
Manufacturing process technology 28 nm 28 nm
Texture fill rate 12.40 56.00
Floating-point performance 297.6 gflops 1,792 gflops
Length 183 mm
Memory bus width 64 Bit 128 Bit
Memory clock speed 1800 MHz 6000 MHz
Memory bandwidth 14.4 GB/s 96 GB/s
DirectX 12 (11_0) 12 (12_0)
Shader Model 5.1 6.3
OpenGL 4.6 4.6
OpenCL 1.1 2.0
Vulkan N/A 1.2.131
CUDA 2.1
Bitcoin / BTC (SHA256) 218 Mh/s
Ethereum / ETH (DaggerHashimoto) 5.2 Mh/s
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