![]() Microsoft supplied and WHQL'd drivers function without incident on PAE, and rumor is that AMD/ATI cards work with acceleration on PAE hacked installs. In current times, NVIDIA's post-328 series drivers (Maybe it was 346) which is required 900 series and higher fail to work with community developed PAE hacks (Up to Windows 7) on GPUs with more than 4GB of dedicated vram due to the similar memory pinhole / shadow issue (Think AMIBIOS circa 1997) that affects mapping the memory segments in direct conflict with the system memory due to decisions made with the PCIe architecture. ![]() The choice to not use/support PAE on client editions after XP SP1 is as guessed due to drivers. NTVDM is and has always been rubbish though. Also access to the extra memory was slower than access to "local" memory, so the API never gained traction and kept used only in DB world until 64bit finally buried it in the computer history (well, not really, actually 64bit in x86 makes extensive use of PAE technology ).Īs mentioned by Windows OS, some people need WOW16 and NTVDM support for legacy applications. Mostly used by DB products like Oracle and MSSQL, before 64bit was a thing, it uses a similar trick as the older DOS EMM386/EMS to map in/out pages from the 2GB space and allocate them in the extra memory, but unlike the older DOS trick, the app had to be programmed specifically to use AWE. There also was the PAE usermode AWE OS API provided by Windows to overcome the 2GB/3GB 32Bit limitation. Every PC I've seen retailed locally since 2009 has came with 4GB ram (399+ price range) and a 64-bit OS pre-installed. It's completely reasonable to use a 32-bit OS, but that has mainly been reserved for ARM devices. The only apps that need more than 2GB are games, modeling/cad software and modern web browsers (Chrome, Firefox namely) though some of these apps "prefork" (Think Apache) sub-processes which workaround the hard limit. Since none on their own needed more than 1gb on average, workgroups would typically pile every sort of service onto one machine before 圆4 was a thing. Sparcdr wrote:The only reason Microsoft offered PAE support on server editions was due to the modular nature of their servicing stacks and 3rd party apps.
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