ruthan Posted July 4, 2017 Share Posted July 4, 2017 (edited) Hello, i have this X99 MB -MSI X99S SLI PLUS with Windows XP SP3 32bit + Geforce 7950 GT PCI-E - all updates and 2x 8GB (3000 Mhz, Dual Channel) of DDR4 Memory, Aida64 see - 2 stick In Windows i see only 912 MB of available of RAM, im used to 3.* GB or 2.9 or something like that what could be wrong? Part of cd image was some Firadisk driver i have such device in device manager. Im using IDE mode of Sata devices and some null drivers for unknow devices - but problem with RAM was right after installation. How to fix it? BTW im still looking for Intel 218-V driver for XP, sound and GPU acceleration is working so, if i fix RAM problem and LAN driver - XP for retro gaming could be great with this board. Edited July 4, 2017 by ruthan Link to comment Share on other sites More sharing options...
HarryTri Posted July 5, 2017 Share Posted July 5, 2017 21 hours ago, ruthan said: 3000 Mhz There must be a mistake here. Also how much memory does the Windows XP detect totally? Link to comment Share on other sites More sharing options...
ruthan Posted July 5, 2017 Author Share Posted July 5, 2017 (edited) I googled, i looks like problem with memory range for some device, is too huge, but i dont know how to change it. Other people had same problem. When i boot in Linux 64bit i see all 16 GB of RAM. I also tested Win 7 64bit - all ok and other fully image of WinXP 32 image transfer - same problem - cca 920 MB RAM. I know that XP is not supported, but this board is XP 32 bit unfriendly i dont know if other X99 could be better (more that 1 GB of RAM). https://superuser.com/questions/89997/windows-only-sees-768-mb-ram-out-of-4-gb https://support.microsoft.com/en-gb/help/978610/the-usable-memory-may-be-less-than-the-installed-memory-on-windows-7-b Similar problem of other user here with Asrock board and X99 and Windows 2000 - 1.5 GB of Ram, from 4 GB: Here you can see, that memory address range for one BUS PCI is huge. I dont know maybe is because i disable lost of integrated devices for smoother install, i checked bios, there is no setting which could affect this. Update i just checked Win 7 64bit device manager memory range for this device is same - it could be Bios design flaw - nobody care about 32 OS usage, i wonder if Windows 7 32 or Windows 10 32bit would have more RAM available? Update: I have tried 3 GPus and Windows 7 32 bit - its the same. Edited July 7, 2017 by ruthan Link to comment Share on other sites More sharing options...
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