So recently I had an argument with gamers on memory required in a graphics card. The guy suggested 8GB model of.. idk I forgot the model of GPU already, some Nvidia crap.

I argued on that, well why does memory size matter so much? I know that it takes bandwidth to generate and store a frame, and I know how much size and bandwidth that is. It's a fairly simple calculation - you take your horizontal and vertical resolution (e.g. 2560x1080 which I'll go with for the rest of the rant) times the amount of subpixels (so red, green and blue) times the amount of bit depth (i.e. the amount of values you can set the subpixel/color brightness to, usually 8 bits i.e. 0-255).

The calculation would thus look like this.
2560*1080*3*8 = the resulting size in bits. You can omit the last 8 to get the size in bytes, but only for an 8-bit display.

The resulting number you get is exactly 8100 KiB or roughly 8MB to store a frame. There is no more to storing a frame than that. Your GPU renders the frame (might need some memory for that but not 1000x the amount of the frame itself, that's ridiculous), stores it into a memory area known as a framebuffer, for the display to eventually actually take it to put it on the screen.

Assuming that the refresh rate for the display is 60Hz, and that you didn't overbuild your graphics card to display a bazillion lost frames for that, you need to display 60 frames a second at 8MB each. Now that is significant. You need 8x60MB/s for that, which is 480MB/s. For higher framerate (that's hopefully coupled with a display capable of driving that) you need higher bandwidth, and for higher resolution and/or higher bit depth, you'd need more memory to fit your frame. But it's not a lot, certainly not 8GB of video memory.

Question time for gamers: suppose you run your fancy game from an iGPU in a laptop or whatever, with 8GB of memory in that system you're resorting to running off the filthy iGPU from. Are you actually using all that shared general-purpose RAM for frames and "there's more to it" juicy game data? Where does the rest of the operating system's memory fit in such a case? Ahhh.. yeah it doesn't. The iGPU magically doesn't use all that 8GB memory you've just told me that the dGPU totally needs.

I compared it to displaying regular frames, yes. After all that's what a game mostly is, a lot of potentially rapidly changing frames. I took the entire bandwidth and size of any unique frame into account, whereas the display of regular system tasks *could* potentially get away with less, since most of the frame is unchanging most of the time. I did not make that assumption. And rapidly changing frames is also why the bitrate on e.g. screen recordings matters so much. Lower bitrate means that you will be compromising quality in rapidly changing scenes. I've been bit by that before. For those cases it's better to have a huge source file recorded at a bitrate that allows for all these rapidly changing frames, then reduce the final size in post-processing.

I've even proven that driving a 2560x1080 display doesn't take oodles of memory because I actually set the timings for such a display in order for a Raspberry Pi to be able to drive it at that resolution. Conveniently the memory split for the overall system and the GPU respectively is also tunable, and the total shared memory is a relatively meager 1GB. I used to set it at 256MB because just like the aforementioned gamers, I thought that a display would require that much memory. After running into issues that were driver-related (seems like the VideoCore driver in Raspbian buster is kinda fuckulated atm, while it works fine in stretch) I ended up tweaking that a bit, to see what ended up working. 64MB memory to drive a 2560x1080 display? You got it! Because a single frame is only 8MB in size, and 64MB of video memory can easily fit that and a few spares just in case.

I must've sucked all that data out of my ass though, I've only seen people build GPU's out of discrete components and went down to the realms of manually setting display timings.

Interesting build log / documentary style video on building a GPU on your own: https://youtube.com/watch/...

Have fun!

Just found this today in the Terms for a VPN provider...

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source: https://hide.me/en/legal

ARE YOU FUCKING JOKING?!? GO BOIL WHAT SMALL MAN JUNK YOU HAVE AND EAT IT.

I ranted about my new laptop and linux mint on it https://devrant.com/rants/1919501 and I said there will be a rant about the OSs I tried

So my new laptop is the Xiaomi notebook pro, with the highest config: i7/16g/256g/mx150 gpu/alu body/10h battery/perfect keyboard/great screen. Its Chinese, but Xiaomi... you kinda expect flaws, problems, but i watched all the reviews and knew about all the things, and the price was 35% down (836 + taxes = 997EUR) for a macbook pro clone? its a no brainer.. but i had a rattling vent (fixed with shoe glue lol) now its just loud in windows but not in linux, strange

I changed the Chinese windows on it to EN... worked perfect... but... It has 2 slots for NVMe ssd so i bought a 500gb one for the second slot, I put windows on that (because games, occasional insta story video edit, big files, anyway...) and put Ubuntu on the 256gb original ssd.. (to develop on that) and it was slow as fuck, I got errors all over the places, problems I never had before with ubuntu.. and mind you Windows had over 3000 MB/s for read and almost 2000 MB/s for write speeds on that disk... I was disappointed af. MIND YOU all my life I had Ubuntu on secondary old/slow laptops/pcs working JUST FINE... I still don't know what the fuck happened.. the ui was choppy to say the least and I just was not ready to accept that on this HW while windows worked like a charm (yuck)

Then I went with Manjaro (based on arch, here on devrant people like that stuff, must be great)... well after I installed it, it booted up to the login page and black screen... something with the MX150 GPU according to the interwebs... by this time I was so frustrated and in time stress because of my flight home for xmas that I decided not to fix Manjaro but to go with another flavour

Linux Mint it is... everything kinda works out of the box, like they say... it has dark mode everywhere in the settings without downloading some bloated theme or plugin like on other flavours. So I sticked with Linux Mint. Im not saying its perfect, but I have it for like a month now and all its flaws are these small irrelevant settings not working, utilities like the battery showing funny numbers in the post I linked in the beginning.

Other than this I want to ask you guys. In all 3 distros I tried, they all had text scaling issues everywhere (os, apps, web). I think I have a regular fullHD display, its sharp, but I mean... I never expected resolution or scaling issues or things like that. On Windows I never had those scaling issues... other than the famous win10 "blurry apps"