I am encountering this very strange bug. If I use Aida64 Cache&Memory Benchmark in Windows 10 I get a specific Ram benchmark result, let's say 48100 MB/s read / 53600 MB/s write / 47700 MB/s copy and 52 ns latency. However, if I am booting from an USB live Windows 10 CD (WinPE), I am getting drastically better results, such as 55000 MB/s read / 61300 MB/s write / 55000 MB/s copy / 45 ns latency.
I am not changing any bios / RAM XMP / Ram memory timings settings between reboots, only booting from either main Win 10 installation or WinPE 10 live usb. I am using the same Aida64 version in both cases.
I am scratching my head, what can explain the huge difference between the results? In both cases, cpu usage is idle and no other background programs are running when doing the tests.
Display - GPU tab shows incorrect shader model version 6.3 with AMD WDDM 2.7 drivers, whereas dxcapsviewer reports shader model 6.5.
Please note you need to pre-initialize the feature query with the highest SM version to report - so if you ask for SM 6.3, you will never get higher than that. The correct detection algorythm has to cycle through all known shader models, starting from the highest known version and going down until success (or start with 5.1 and loop up to the highest until failure). The latest Windows SDK Preview defines SM 6.6.
I have 6 Supermicro platforms, and I found the following problems when using AIDA64-620 version test. 1. On the motherboard of the Supermicro X11 series, the memory SPD information cannot be obtained 2. On the Supermicro X11 series motherboard, running the system stablity Test will be suspended for 15 minutes, and then resumed. 3. The memory speed test is not up to standard. The bandwidth obtained through the calculation formula should be 230G / s, but the result obtained through the AIDA64 test is only 160G / s. Our bandwidth calculation formula may be wrong. Can you provide a calculation Formula for bandwidth.
Bandwidth = memory core frequency × number of memory bus bits × multiplication factor
OS: windows 10 Professional Workstation Edition
platforms:8049U-E1CR4T/BIOS 3.2/BMC 1..71/CPLD Version 04.b1.06
motherboard:X11QPH+ CPU:4 * 6254 memory:12 * M393A4K40BB2-CTD6Y RAID： 9361-8i GPU:Quadro P2000 ssd:1* SSDPE2KE016T801