Do not forget there is a limitation in chipset that will be needed to use 4g of more of ram in a 32 not OS On 3/25/10, Kurt Granroth wrote: > Just to be pedantic; Matt is correct in his use of 'AND' with the > memory. It is 'have more than 4GB RAM *AND* something that can use more > than 4GB in one process'. > > Basically, this is due to PAE. The PAE extension (which all modern CPUs > support) allow the OS to access up to 64GB of memory, even on a 32-bit > x86 system. There's no need for a 64-bit processor for that. > > HOWEVER, PAE doesn't permit a single process from mapping or allocating > more than 4GB. That's where you'll need 64-bit processors. > > And if you don't know for sure that you need that capability... then you > definitely don't. It's very very rare (unless, of course, you are in > the fields that do need that and then you'd know that). > > On 3/25/10 5:38 PM, Stephen wrote: >> this is pretty accurate. if you are at the 4g limit or more then 64 >> bit. or if you are doing some really high end memory intensive >> applications then you will have a need, otherwise 32 bit is the better >> idea for compatibility and ease of use (some weirdness with flash in >> 64 bit, solvable but you have some hoops to jump, there are a few >> others like this) >> >> On Thu, Mar 25, 2010 at 3:32 PM, Matt Graham >> wrote: >>> From: Nathan England >>>> Before I spend any time downloading and trying it myself, has any one >>>> taken >>>> the time to compare performance differences in every day usage between >>>> ubuntu x86 and the 64 bit version? >>> >>> There is essentially ZERO performance difference between 64- and 32-bit >>> Linux >>> for normal user apps AFAICT on a Gentoo box. Couple that with the fact >>> that >>> at least one app (epsxe, PSX emulator) doesn't work at all on 64-bit >>> Linux, >>> and it's a no-brainer: Use 32-bit. >>> >>> The only reason that I can see to use 64-bit Linux is if you have more >>> than 4G >>> RAM in your box AND you've got something that can benefit from >>> malloc()ing >>> more than 4G of RAM in one process. So if you're running a big DB or a >>> huge >>> numerical simulation or something like that, go 64-bit. Otherwise, go >>> 32-bit. >>> >>> (Constructive criticism and flying attack porcupines welcomed, since the >>> above >>> post may be full of bovine feces....) >>> >>> -- >>> Matt G / Dances With Crows >>> The Crow202 Blog: http://crow202.org/wordpress/ >>> There is no Darkness in Eternity/But only Light too dim for us to see >>> >>> >>> --------------------------------------------------- >>> PLUG-discuss mailing list - PLUG-discuss@lists.plug.phoenix.az.us >>> To subscribe, unsubscribe, or to change your mail settings: >>> http://lists.PLUG.phoenix.az.us/mailman/listinfo/plug-discuss >>> >> >> >> > > --------------------------------------------------- > PLUG-discuss mailing list - PLUG-discuss@lists.plug.phoenix.az.us > To subscribe, unsubscribe, or to change your mail settings: > http://lists.PLUG.phoenix.az.us/mailman/listinfo/plug-discuss > -- Sent from my mobile device A mouse trap, placed on top of your alarm clock, will prevent you from rolling over and going back to sleep after you hit the snooze button. Stephen --------------------------------------------------- PLUG-discuss mailing list - PLUG-discuss@lists.plug.phoenix.az.us To subscribe, unsubscribe, or to change your mail settings: http://lists.PLUG.phoenix.az.us/mailman/listinfo/plug-discuss