>>7969088I use Gigapixel AI, DeNoise AI, and Sharpen AI. All by Topaz. A lot of money but it was worth it for me. But if you can only afford one, just get Gigapixel.
Alternatively, if you have a powerful Nvidia graphics card (which it requires if I'm not mistaken), you could run ESRGAN and train it to upscale stuff. But I've had nothing but issues with installing it. However, there's a GUI version of it called Cupscale which is very easy to install & use. And there's a ton of pre-trained ESRGAN modules you can put into Cupscale. I think 4x-UltraSharp was the one I had the most success with.
https://upscale.wiki/wiki/Model_DatabaseIt doesn't end there either. I sometimes combine the results of Topaz programs with that of Cupscale & merge the best of both worlds with the layers feature of photo editing software like GIMP or Photoshop (I use GIMP with the Resynthesizer plugin).
If you're upscaling old small images as wallpapers for modern monitors, you should definitely also look into DALL-E which is an invaluable resource for expanding images to a wider screen ratio. You expand them to 16:9 ratio & then upscale it. See:
>>7938982 
