Hello all, Man explaining it and reading the explanation can make your brain hurt. Let's just say for the original poster it's not enough and should upgrade to 64-bit OS.
Regards, Tim Lider Sr. Data Recovery Specialist Advanced Data Solutions, LLC http://www.adv-data.com > -----Original Message----- > From: hardware-boun...@hardwaregroup.com [mailto:hardware- > boun...@hardwaregroup.com] On Behalf Of Greg Sevart > Sent: Friday, September 18, 2009 12:24 PM > To: hardware@hardwaregroup.com > Subject: Re: [H] More than 4GB of ram and VM question > > It isn't as much of a mystery as people make it out to be. By default, > on a > 32-bit system with 4GB of RAM, 2GB is available for user space, and 2GB > is > reserved for exclusive use by the kernel--which would include kernel > mode > drivers. You are also correct in that some of this upper space is > reduced by > various system devices, some of which might not make much sense. The > reason > that systems differ is because of varying chipsets, their maximum > addressable memory, the ability of the chipset and BIOS to remap memory > above system-reserved spaces, and, of course, the devices installed. > > Using the /3GB switch will shift the division to 3GB of userland and > 1GB of > kernel memory, but keep in mind that each individual 32-bit address > will > still be limited to 2GB of memory unless it was compiled with > LARGE_ADDRESS_AWARE. It gets much more complicated when you're using > PAE > (Physical Address Extensions) and AWE (Address Windowing Extensions), > but > that realm is only relevant if you're running Server Enterprise or > better. > > > -----Original Message----- > > From: hardware-boun...@hardwaregroup.com [mailto:hardware- > > boun...@hardwaregroup.com] On Behalf Of Winterlight > > Sent: Friday, September 18, 2009 1:00 PM > > To: hardware@hardwaregroup.com > > Subject: Re: [H] More than 4GB of ram and VM question > > > > This is not how I understand it to work, not that there seems to be > > any kind of consensuses on this, but I read in Maximum PC that 32 bit > > supports 4GB of RAM addressing. You start out with 4GB of RAM and > > then windows starts knocking off for addresses already used by your > > video card, your network card, whatever. This is why some people show > > 3.2GB some, just 3GB. To add to the confusion, Maximum PC has > > reported that MS has stated that windows can actually use some of > > that undressed RAM for things such as drivers. > > > > > > At 07:24 AM 9/18/2009, you wrote: > > >Hello Brian, > > >32-bit is really locked to 3GB of RAM, it's just Windows is > reporting > > the > > >3.6GB of RAM. > > > > > > >
