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<blockquote data-quote="MHG" data-source="post: 1413248" data-attributes="member: 33122"><p>Well P4 Prescott DOES support 64bit and it says so on the box (which I still have lol)... but this is not for the desktop. This for my laptop which has a Penryn architecture Pentium Dual Core.</p><p></p><p>Anyway, performance is not about memory size right ? 64bit speeds up execution of mathematical operations and operations involving array-processing of large amounts of data (like applying XOR operation on an entire block of memory to encrypt it) because it can process double the data in one clock cycle compared to 32bit. This translates to better performance in multimedia and databases and stuff like that.</p><p></p><p>But as a consequence, all pointer variables are 8 bytes in size (to address the extra RAM) instead of 4 bytes and this results in 64bit OSes having a larger memory footprint compared to 32bit OSes.</p><p></p><p>And for regular usage, this makes no sense at all and the only advantage of going 64-bit is bigger RAM size and higher capacity. So people with even exactly 4GB RAM its better to go 32bit due to its smaller memory footprint for regular tasks. But since I'm using my laptop for all sorts of things from encryption to databases to servers (bought this machine to help with my B.Tech in CSE lol) and realtime audio with JACK and rt-linux. I think 64bit would make sense for me.</p><p></p><p>All I'm worried about is if ArchLinux can run on 1GB RAM or not. I'll be using Xfce Desktop along with KDE. Also RatPoison and IceWM as window managers when I need a lighter interface to use.</p><p></p><p>32bit ArchLinux currently uses under 64mb RAM when booted into IceWM and Conky. But I am not so sure how the other applications will fare...</p></blockquote><p></p>
[QUOTE="MHG, post: 1413248, member: 33122"] Well P4 Prescott DOES support 64bit and it says so on the box (which I still have lol)... but this is not for the desktop. This for my laptop which has a Penryn architecture Pentium Dual Core. Anyway, performance is not about memory size right ? 64bit speeds up execution of mathematical operations and operations involving array-processing of large amounts of data (like applying XOR operation on an entire block of memory to encrypt it) because it can process double the data in one clock cycle compared to 32bit. This translates to better performance in multimedia and databases and stuff like that. But as a consequence, all pointer variables are 8 bytes in size (to address the extra RAM) instead of 4 bytes and this results in 64bit OSes having a larger memory footprint compared to 32bit OSes. And for regular usage, this makes no sense at all and the only advantage of going 64-bit is bigger RAM size and higher capacity. So people with even exactly 4GB RAM its better to go 32bit due to its smaller memory footprint for regular tasks. But since I'm using my laptop for all sorts of things from encryption to databases to servers (bought this machine to help with my B.Tech in CSE lol) and realtime audio with JACK and rt-linux. I think 64bit would make sense for me. All I'm worried about is if ArchLinux can run on 1GB RAM or not. I'll be using Xfce Desktop along with KDE. Also RatPoison and IceWM as window managers when I need a lighter interface to use. 32bit ArchLinux currently uses under 64mb RAM when booted into IceWM and Conky. But I am not so sure how the other applications will fare... [/QUOTE]
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