32 bit Windows XP has two well-known memory. XP sees 763MB of RAM beyond the 3.3GB or so XP can access directly as a. How to patch Windows 7 32bit to use. Right, I've upgraded from Windows 7 to Windows 10 Pro 32 Bit and I forgot that I have 5 GB of RAM available. On Windows 7 32Bit I had a patch so all of it was usable.

Hey ya all Came across a patch, actually saw it on a friends pc, that allows 32bit OS to see and use ram that are beyond the traditional 3GB limitation that 32bit OS is known for. The patch appears to work by modifiying certain registry keys and possibly even some things in the bios. I was wondering is such thing even possible?

Even though Im seeing it, I just thought maybe it could just be a display hack or number hack, where in reality the max ram allowed in 32bit OS is still 3GB My understanding is that the 3GB limitation is an actual windows 32bit architecture limitation, hence regardless of what is done to the reg or even the bios it is only able to use 3GB of ram, even though it may well be able to see more than 3GB. But then again the registry is the heart of the OS, so I guess anything is possible. Any comments? Hey ya all Came across a patch, actually saw it on a friends pc, that allows 32bit OS to see and use ram that are beyond the traditional 3GB limitation that 32bit OS is known for.

Ram

The patch appears to work by modifiying certain registry keys and possibly even some things in the bios. I was wondering is such thing even possible? Even though Im seeing it, I just thought maybe it could just be a display hack or number hack, where in reality the max ram allowed in 32bit OS is still 3GB My understanding is that the 3GB limitation is an actual windows 32bit architecture limitation, hence regardless of what is done to the reg or even the bios it is only able to use 3GB of ram, even though it may well be able to see more than 3GB.

See More On MSDN

Windows xp 3gb ram

But then again the registry is the heart of the OS, so I guess anything is possible. Any comments?Basically most modern processors support a feature called PAE, Physical Address Extension which allow the operating(provided that it supports it) to overcome the 32bit architechtural limit of 4gb of RAM to be utilised.

The reason you can't utilise more than 4gb is a licensing issue rather than an architectural one Read this: Its long, but very comprehensive and should answer all questions about PAE. The reason you can't utilise more than 4gb is a licensing issue rather than an architectural oneMark Russinovich has a slightly different take on it here: The key bits are: 'However, by the time Windows XP SP2 was under development, client systems with more than 4GB were foreseeable, so the Windows team started broadly testing Windows XP on systems with more than 4GB of memory.' 'What they found was that many of the systems would crash, hang, or become unbootable because some device drivers, commonly those for video and audio devices that are found typically on clients but not servers, were not programmed to expect physical addresses larger than 4GB.

As a result, the drivers truncated such addresses, resulting in memory corruptions and corruption side effects. Server systems commonly have more generic devices and with simpler and more stable drivers, and therefore hadn't generally surfaced these problems. The problematic client driver ecosystem led to the decision for client SKUs to ignore physical memory that resides above 4GB, even though they can theoretically address it.' Mark Russinovich has a slightly different take on it here: The key bits are: 'However, by the time Windows XP SP2 was under development, client systems with more than 4GB were foreseeable, so the Windows team started broadly testing Windows XP on systems with more than 4GB of memory.'

See more on MSDN

'What they found was that many of the systems would crash, hang, or become unbootable because some device drivers, commonly those for video and audio devices that are found typically on clients but not servers, were not programmed to expect physical addresses larger than 4GB. As a result, the drivers truncated such addresses, resulting in memory corruptions and corruption side effects. Server systems commonly have more generic devices and with simpler and more stable drivers, and therefore hadn't generally surfaced these problems. The problematic client driver ecosystem led to the decision for client SKUs to ignore physical memory that resides above 4GB, even though they can theoretically address it.' Sp studio systems.

Windows Xp 3gb Ram

Cheers WYes-that is also the other reason behind this. IMO Microsoft just didn't bother trying to fix PAE.