Linked by Thom Holwerda on Thu 21st Jul 2011 14:10 UTC, submitted by Jennimc
Mozilla & Gecko clones "Over the last couple of weeks, Mozilla has finally stepped up its 64-bit testing process. There are now five slaves dedicated to building Firefox for Windows x64, which means that from Firefox 8 and onwards, you'll be able to pick up 64-bit builds that are functionally identical to its 32-bit cousins but operating in native 64-bit CPU and memory space." Th 64bit version is about 10% faster, benchmarks show.
Thread beginning with comment 482010
To view parent comment, click here.
To read all comments associated with this story, please click here.
RE[2]: Old news
by Surtur on Fri 22nd Jul 2011 11:28 UTC in reply to "RE: Old news"
Surtur
Member since:
2009-04-15

[...] I (and most people) switched to a 64Bit OS when I had 4G or more, no reason to before. I got my first 4G computer in 2006, and I installed both Linux 64 and Windows 64. Running 64Bit Linux before that was just useless, really


While this may be true for many users like you I personally consider (being an OpenBSD user) native NX-bit support without hacks quite a feature. This has been discussed at http://www.openbsd.org/papers/auug04/mgp00001.html whereas the following page gives a nice overview over the problems regarding i386 http://www.openbsd.org/papers/auug04/mgp00017.html

Quoting the Wikpedia Article summarizing the NX-bit (http://en.wikipedia.org/wiki/NX_bit) it seems this is the same with many Linux distributions:

Some desktop Linux distributions such as Fedora Core 6, Ubuntu and openSUSE do not enable the HIGHMEM64 option by default, which is required to gain access to the NX bit in 32-bit mode, in their default kernel; this is because the PAE mode that is required to use the NX bit causes pre-Pentium Pro (including Pentium MMX) and Celeron M and Pentium M processors without NX support to fail to boot.


Ymmv of course as many people do not care. Although OpenBSD does not even support more than 4GB of memory (even on amd64) by default in a release atm (coming in November), given that there are no downsides, why should I settle for less...

Reply Parent Score: 1

RE[3]: Old news
by BluenoseJake on Fri 22nd Jul 2011 12:29 in reply to "RE[2]: Old news"
BluenoseJake Member since:
2005-08-11

32Bit Windows supports the NX bit, it's just off by default. It's required for DEP to work.

Edited 2011-07-22 12:30 UTC

Reply Parent Score: 2

RE[4]: Old news
by BluenoseJake on Fri 22nd Jul 2011 12:52 in reply to "RE[3]: Old news"
BluenoseJake Member since:
2005-08-11

Actually, I was wrong, it isn't required for DEP, but it'll use it if available.

Reply Parent Score: 2

RE[4]: Old news
by Surtur on Fri 22nd Jul 2011 13:18 in reply to "RE[3]: Old news"
Surtur Member since:
2009-04-15

32Bit Windows supports the NX bit, it's just off by default. It's required for DEP to work.


So? I never questioned that. My point was completely different. (When we are at it, which has nothing to do with it, OpenBSD even emulates it for Processors not capable of.) It was was about:

[...] Running 64Bit Linux before that was just useless, really


(See my post above again.)

As I argued I beg to defer in that regards. Windows default security policies are a completely different topic I did not lose a word about...

Edited 2011-07-22 13:20 UTC

Reply Parent Score: 1