DirectX: problems caused by memory and large memory size

Today, more and more enthusiasts choose large memory and large graphics cards to assemble their own computers. In fact, for the moment, it is not a good thing to look at large memory and video memory, large Memory and video memory can also cause problems when playing games.

If your system Memory is 4 GB or more and the graphics card Memory is 1 GB or more, the estimated Total Memory (Approximate Total Memory) on the tab is displayed when you run the directxdiagnostic tool (dxdiag.exe) on Windows 7) the displayed value is low.

For example, on a computer with 1 GB of memory configured, when the system memory is 4 GB, 6 GB, and 8 GB respectively, the estimated total reported memory is only 3496 MB, 454 MB, and 1259 MB.

In addition to this harmless display problem, when the memory and memory capacity are relatively large, some games or programs may not be able to choose the highest detailed settings, which is more serious.

Microsoft explained in the document "kb2026022's knowledge library" that the dxdiag.exe diagnostic tool used to estimate the total memory of the system did not take such a large capacity into account during the design of the API interface, so there was a deviation.