A Graphics Card is a piece of hardware used in almost everything that has a monitor (phones, tablets, laptops, desktops, etc) to provide better quality graphics and faster Framerates (for games). That’s what is a graphics card for in short but let’s expand with more information in a question answer format.
GPU stands for Graphics Processing Unit. In most scenarios, it means the same as a Graphics Card. See this Quora link for more info
Question 1 : Is Graphics Card necessary ?
Yes, because CPU is used for by all devices in the computer so the architecture is designed to provide the best results for this type of work.
Doing exclusive image calculations is what is a graphics card for.
Question 2 : Can’t the CPU do arithmetics or other calculations that the GPU does?
It can, however is not optimized for the graphics calculations but the GPU is.
Dedicated memory means it used entirely for the needs of the GPU. Shared Memory is RAM memory withheld for graphics calculation.
Decicated Memory is faster because it is inside the same chip of the GPU. For Shared Memory the GPU has to travel out of its chip to get it (from RAM). So even if you see it simply as a distance problem, you can understand that Dedicated Memory is faster.
Below there is a nice video about what is a graphics card for:
Question 5: What is the minimum & recommended Memory Size for a GPU?
Question 6: Is Graphics Card only for gaming?
Nope. It’s there for most image processing calculations (videos, architect programs etc).
Question 7: How do i know if my PC uses my Graphics Card?
If you have Windows 10 after 2018 April’s update, there is a Settings App. Check the article in the link for detailed information.
If you don’t have Windows 10, update your graphics driver to the latest version. That reduces the chance that your applications use the Shared Memory Graphics Card (If any).
You can always download GPU-Z. This tool can help you see how much load your graphics card has (and other information).
There are some scenarios where a system is designed to use both the shared memory graphics card and the dedicated memory graphics card.
Check the following Quora answer:
“When an application launches which requires the additional power of the NVIDIA graphics card, systems with NVIDIA Optimus technology seamlessly switch over to that, then turn it off when no longer required. “https://www.quora.com/Can-I-change-my-laptop-display-from-intel-hd-graphics-to-Nvidia-GeForce-920M/answer/Amay-Mishra
You can check the above link if you want how to use only the dedicated memory graphics card. If you have an AMD graphics card there is a control panel there as well where you can make changes.
Question 8: Can you use 2 or more GPUs for better perfomance?
Question 9: Is it recommended to buy 2 or more graphics cards for better perfomance?
No, it’s not. You can play all games with 1 good graphics card. Multi GPU Setup is for people who have a budget and want a better overall experience(maybe more screens, higher than 1080p (FHD) or 1444p (QHD) resolutions, or just because they are geeks and want the best of the best!).
Question 10: Can i use one Nvidia and one AMD Card simultaneously?
No, Multi GPU Setup is only available with 2 graphics card of the same brand (probably of the same model too).
Question 11: Which brand is better if i am on a budget?
AMD cards are cheaper and the perfomance isn’t so different from Nvidia Cards.
Question 12: What graphics card do i need to play all games at max Graphics?
Well, all you have to do is find out the game with the max graphics requirements and take that graphics card.
The game with the highest non DXR graphics requirements is L.A Noire The VR Case Files
It needs a NVIDIA GeForce GTX 1080 8 GB.
Question 13: What graphics card do i need to play games with DXR ?(DirectX Ray Tracing)
At least Geforce GTX 1060 6GB. Check this site.
Question 14: Do i need a good graphics card to play Fortnite?
Not really. If you check Fortnite gamepedia it says it needs only Nvidia GTX 660 or AMD Radeon HD 7870 equivalent DX11 GPU (with 2GB VRAM).
These cards are pretty old so if you have better it will be a breeze(at least when it comes to the graphics card).
Question 15: What does TI mean in GeForce Cards?
It means Titanium and is better than the non Titanium version. Below there is a relative answer from Quora.
“Realize that titanium is a favored metal in aerospace and aviation. A little short of considering it an exotic metal, but very, very, close.https://www.quora.com/What-does-%E2%80%9CTi%E2%80%9D-mean-in-the-context-of-NVIDIA-GPUs/answer/Jerome-Jackson-1
So if you are a graphics card maker and wanted folks to feel that this is a card that is above the rest, you give it a name that can be connected to one of the most respected hi-tech metals that sounds a bit like platinum. “
If you have more questions that you want to be added, feel free to add them in comments.