hi any one there can help me

[Mustafa65]

now I want to record screen for doing some things (not games) in obs I have i3-3217u cpu without discrete graphics card what is the best setting for me

 

[Lawrence_SoCal]

Just install OBS and let the auto-config wizard run (or run it from the Tools menu). Getting good baseline settings is literally why it exists.

But understand that is BOTH real old (9 generations) AND lowest-end CPU, optimized for battery life, not the computationally demanding task of real-time video encoding. IF it will work (and I don't know that it will), you are going to need a simplistic OBS setup, and optimize OS and OBS for an under-powered PC.
I recommend monitoring hardware resource (CPU, GPU, RAM, Disk I/O, etc) utilization [for ex. using Task manager’s Performance tab and/or Resource Monitor] to see if your system is being maxed out with your settings https://obsproject.com/wiki/General-Performance-and-Encoding-Issues and https://obsproject.com/wiki/GPU-overload-issues

I tried to stream with an Intel i5-6300HQ (2.3GHz 4c/4t circa Fall 2015), 8GB RAM, SATA SSD with Fresh WIn10 install, Nvidia GeForce GTX 960M and failed as the PC wasn't up to the task (no gaming, just alternating between USB webcam and simple pre-recorded videos, alongside a PPTx slide show window capture, streaming at 720p 30fps with no OBS effects/filters). I’ve learned a lot more about OBS since then, and I might be able to just squeak it out, but wasn’t worth it to me, and got a new PC instead

In your case, avoid most (all to start with) video filters and effects. Don't use Studio Mode (dual rendering). And I'd recommend avoiding video re-scaling
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Here's the quick-start guide:

OBS Studio Quickstart

OBS Studio - Free and open source software for live streaming and screen recording - obsproject/obs-studio

obsproject.com

I'd also recommend watching the Nerd or Die tutorial video series:

OBS Studio Tutorial Series Introduction | Tutorial 1/13

Welcome to our OBS Studio tutorial series! In this series we're going to cover everything that you'll need to know to make your stream look great.Next Video...

www.youtube.com