XMP Memory Issues

[mwdavis77]

I recently purchased an MSI Gaming Z170A XPOWER GAMING TITANIUM EDITION to go with my 6700k. I also purchased the following memory kit to go with the MB.

G.SKILL Ripjaws V Series 64GB (4 x 16GB) 288-Pin DDR4 SDRAM DDR4 3200 (PC4 25600) Intel Z170 Platform Desktop Memory Model F4-3200C16Q-64GVK

I put it all together upgraded the bios and everything has been running well. I can overclock the CPU and run games, benchmarks, etc. without problems. The issue that I'm running into however is when I try to enable XMP. The computer won't post with XMP enabled and goes back to the previous bios configuration. I've also tried to manually configure the memory overclock based on the specs and the same thing happens.

Any suggestions?

 

[BonzaiDuck]

I recently purchased an MSI Gaming Z170A XPOWER GAMING TITANIUM EDITION to go with my 6700k. I also purchased the following memory kit to go with the MB.

G.SKILL Ripjaws V Series 64GB (4 x 16GB) 288-Pin DDR4 SDRAM DDR4 3200 (PC4 25600) Intel Z170 Platform Desktop Memory Model F4-3200C16Q-64GVK

I put it all together upgraded the bios and everything has been running well. I can overclock the CPU and run games, benchmarks, etc. without problems. The issue that I'm running into however is when I try to enable XMP. The computer won't post with XMP enabled and goes back to the previous bios configuration. I've also tried to manually configure the memory overclock based on the specs and the same thing happens.

Any suggestions?

Have you tried adjusting the voltage at the CPU memory controller yet? For older motherboards, this may be called "vCCIO," "vCCSA" "VTT" or "CPU_VTT." I would think for DDR3 systems, this would "auto" default to around 1.000V. There was an upper limit for both safety and the dilemma that you could only raise your vDIMM voltage by so much before you had to raise the IMC's voltage.

To the point: socketing four modules would likely require a small bump in that voltage. Further, I have seen motherboards (ASUS) that would allow you to pick between two or so XMP settings, and these would display the command-rate spec of CR=2. The board would set them to 1. There is also -- on some boards -- a setting that allows you to let the memory speed scale with the overclocked CPU speed, or fix it at the memory's spec.

I assume the board has RAM of that speed in its QVL list? Or that the G.SKILL configurator for that RAM includes your MSI board in its list?

There should be an advantage to getting a stable system with the full XMP profile for the RAM instead of a complete manual entry of the spec timings, CR and speed. There are secondary timings which, under "auto" settings, are more aggressively adjusted by an XMP setting, which would likely mean some increment of better performance.