On Mon, Sep 07, 2020 at 05:22:20PM +0300, Georgi Naplatanov wrote:
You'll be able to use more RAM, CPU's registers. On the other hand some software vendors do not support x86 anymore - example: Google Chrome
Expanding on this a little bit: the 64 bit architecture has more CPU registers which could greatly improve performance for some tasks. I think that there are certain other CPU instructions that are not available in 32 bit mode that your programs could take advantage of. Not only can you use more RAM (you can address >4GiB with 64 bit memory addresses without requiring workarounds like PAE), but you will almost certainly *use* more RAM too, since all native pointers are now twice the size. And, since most of them will be pointing at addresses lower than the 4GiB boundary, half of all the newly consumed RAM will be zeroes. -- Please do not CC me, I am subscribed to the list. 👱🏻 Jonathan Dowland ✎ j...@debian.org 🔗 https://jmtd.net
