Started by fox, March 27, 2021, 01:58:13 PM
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Quote from: Jason on March 28, 2021, 03:46:53 AM....But the other point I didn't see mentioned (but maybe it was later in the video) is that a 64-bit OS is going to use more RAM. In order to keep track of processes in RAM, you need a list of referenced addresses that use up a portion of that same RAM. A 64-bit OS is going to use 64-bit addressing. You can have more RAM because of this (over 4 GB) but the downside is that you need more of that RAM to manage the addresses (double what you needed for 32-bit addresses). So if your applications are already using too much RAM, then a 64-bit OS could end up being slower than its 32-bit cousin. Also, I believe that compiling applications for 64-bit means they will be bigger, too. But if it's not close to using that amount of RAM, the difference won't matter.
Quote from: fox on March 28, 2021, 11:00:14 AMI don't recall anything in the video about keeping track of RAM use; it was focused on speed. One surprising thing was that at the beginning, the 32-bit OS booted up much faster than the 64-bit. But that seemed to be negated with a reboot, followed by a shutdown and a second boot. I don't understand those results; in particular why the 64-bit OS took so much longer to boot from a completely cold start.
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