Is 70% RAM Usage normal?

[jpandroid]

I noticed in Task manager, that my RAM usage consistently hovers at 220-230/304 MB.

I've stopped all 3rd apps and have only left system ones running and this is still the case. Couple of questions:

1. Is this a cause for concern? Is there any way to lower this?
2. Do I need to keep using task manager to end/force shutdown apps? I do this consistently a few times a day and I'm thinking that this is a bit excessive.

Here's my phone's info:

Model #: Samsung - SGH - I896
Firmware ver: 2.2
Kernel Ver: 2.6.32.9


Any advice?

 

[JiMMaR]

using a task manager actually is not needed at all
unused ram is wasted ram, android loads your apps data in the ram so that they run fast, so when you end them android would restart them causing more cpu cycles and draining more battery , only end stray apps if they got stuck

in general , you shouldn't concern yourself with how much ram you have left , the only problem is when ram usage is really high and android begins swapping a lot

 

[Christars]

As it's pretty much the same issue only worse, I figured I'd post here rather than make a new thread.

So the same thing happens with me except that, after about an hour or two of usage, the RAM starts hovering at the 300MB-mark. At this point opening even the smallest application usually results in it shutting down, and more than occasionally this also causes the phone to crash. I keep using task manager to shut down programs, but it just says no programs are running. I've been deleting some excess files (normal ones, just documents and thumbnails) which seems to have alleviated the problem slightly, but it's not enough, and even then it doesn't really make sense since I still have several GB free space left.

It seems the problems started since I installed 2.3.3, but that might just be a coincidence?