When a user with old hardware comes here to ask a question, it isn't appropriate to insult their old hardware. Comments like this are off putting:
Your PC is a dinosaur, and your graphics card is an etch-a-sketch. [...]
You're joking right? Your PC's graphics card is a joke. So is your RAM and CPU, in fact. Get an actual computer. [...]
Regardless of the question being on topic or not, we need to treat other members with respect. They are here to get help, not to be berated on their current hardware.
Rudeness and belittling language are not okay. Your tone should match the way you'd talk in person with someone you respect and whom you want to respect you. If you don't have time to say something politely, just leave it for someone who does.
Both of the comments excerpted above contain information that is helpful - after the users got their cheap shots in. The other information is helpful. The rudeness is not.
We want to help users, not drive them away. Be aware of what you are writing to others.