Asus "DIMM Fit" BIOS Utility Issues

[mgilbert]

I have an Asus X870 TUF Gaming ATX motherboard running the latest BIOS. I also have a Corsair 64gb (2*32) 6600 MT/s CL32 DRAM kit. It's not stable at 6600, but is at 6400-CL32, or better yet, 6000 with 30,36,36,76 timings. The RAM is XMP, so doesn't have EXPO settings, so I used DOCP1 to overclock the RAM, and set the main timings manually.

The board has a feature called DIMM Fit (DIMM Fit Pro), which is supposed to optimize all the RAM's settings, including timings. It takes several hours to run. I ran the simpler DIMM Fit (non-Pro), and it completed successfully, after over six hours, but it changed nothing that I could find in the way of timings, and several memory benchmark runs showed no difference in performance.

So, I decided to try DIMM Fit Pro. It has twenty or more settings, but all but five are labeled "N/A", and are set to "0", and cannot be changed. The five it does have are voltage settings. So, all the timings options are apparently not available.

What am I missing???

[cvarta01]

Try DIMM Flex (vs Fit). Much easier. It's one toggle. Leave defaults as is. I did that and stability improved instantly even with XMP Tweaked enabled. Couldn't pass OCCT or memtest86 before. With it enabled, problem solved. Passing all day long.

[mgilbert]

Thank you for the reply, but DIMM Flex is only available on Intel boards.  I'm going to take another shot at DIMM Fix Pro.  I must be doing something wrong.

[mgilbert]

For anyone who is interested, apparently this feature simply doesn't work.  I'm running the latest BIOS, and even tried different RAM, but when I enter the screen for DIMM Fit Pro and press Shift+F1, nothing happens.