MacBook Pro 16 memory upgrade feasibility and cost?

mosaddaqt wrote:

I have bought Macbook Pro 16 with M4Pro and it has 24G memory. Would I be able to increase/upgrade the memory in future if I need it? how much will it cost?

Point of purchase only. Todays technology is SMT (Surface Mount Technology) this is at the factory. No replaceable RAM

or other major components.

If you want to upgrade— you have a limited 14 days for an exchange or refund for any reason—see Returns & Refunds Order status: start here https://www.apple.com/shop/help/returns_refund

Only items that have been purchased directly from Apple, either online or at an Apple Retail Store

Remember unused RAM is wasted RAM— not like the old days. Memory management has come along way.

Multiple cores, hyper threading, compressed memory this all goes back quite a ways now.

the new M-Series was another huge leap forward with unified memory, allowing the GPU and CPU to share memory without penalty.

You can use the Activity Monitor app to assess the current state of the use of the RAM already installed in your Mac.

Look into the Memory Pressure graph in that app.

Activity Monitor User Guide for Mac - Apple Support

As our friend, @BobTheFisherman, has posted, RAM and internal storage cannot be changed after that Mac was built.

You cannot upgrade the RAM or the internal SSD on any Apple Silicon Mac notebook. The RAM chips and flash chips are both soldered in.

In the case of RAM, the RAM dies are physically located right next to the main System-on-Chip to support a high-speed connection.

mosaddaqt wrote:

I have bought Macbook Pro 16 with M4Pro and it has 24G memory. Would I be able to increase/upgrade the memory in future if I need it? how much will it cost?

Memory, RAM can not be changed after the computer is manufactured.

Are you having issues now that you think are RAM-related? If so, please detail them.

Long history here teaches that "slow Macs" are seldom fixed by throwing RAM at the problem.