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Comment Re:Makes sense if you have an older Mac (Score 1) 592

One more, thing, the mac uses compression to avoid swapping-- CPU cycles are cheap, IO cycles are expensive.

see this ars technica article for an explanation-- yellow might actually mean--"compressing" and red might actually mean "swapping," though In any event, using 7.99 GB out of 8.0 GB (my situation), is perfectly normal.

Oh No, I'm using 9.5 MB of swap! Whatever shall I do?

Comment Re:Makes sense if you have an older Mac (Score 1) 592

On the Mac, free ram is wasted ram. If it's not otherwise assigned, it usually gets used as cache.

Apple keeps changing the activity monitor around, but in the latest-- Yosemite, there's a little plot that shows "Memory Pressure". If it's green, don't worry about it. If it's yellow, you are actually running out of memory, and might want to quit some processes. If it's red, the machine is swapping to disk, and if you are still using spinning rust, this can mean a massive slowdown.
Seriously, that's how it works

Comment Re: a better question (Score 1) 592

for a couple 3.5" hard drives,

2.5 inch SSDs are plentiful.

Also a real desktop can get much faster CPUs than an iMac.

From what I've heard, i7-4790k is a real screamer... It really does depend on whether you can use more than 4 cores.

Comment Re:MicroSD card? (Score 1) 325

It makes a real difference if the storage has more latency than the memory.
  I've been dealing with a somewhat less than satisfactory app on my ipad-- eDrawings Pro, a CAD viewer. It's always complaining about running out of memory. The solution to my problems (assuming that I don't just cut my losses and run) would depend on whether the error message was being pedantic about RAM vs storage.

Comment Re:MicroSD card? (Score -1, Offtopic) 325

Laptops generally have a lot more memory than 16 or 32GB, so it's not an issue. When it becomes an issue, as with mobile devices, this should be compensated with more memory to dedicate to OS.

My iMac has 8GB of memory, and 4 TB of storage.
My iPad has 1 GB of memory and 16 GB of storage

Apple doesn't sell laptops with more than 16 GB of memory.

Now, get off my lawn!

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