1hardway Posted December 7, 2015 Share Posted December 7, 2015 (edited) Building a new system and I can't get my memory to run without errors at the rated 1.2V in XMP (2666MHz). If I take XMP off and run it at the SPD frequency of 2133, it works just fine, but when I enable XMP, it starts throwing errors in Memtest86 and I get erratic behavior in Windows 10. I tested the board with my Fluke multimeter, which I know is dead reliable, and the voltage to the DIMMS in XMP 1 is 1.219V. My question is, should I even go in and try to up the voltage in the BIOS to get it stable, or do I have substandard RAM which I should replace? System: Skylake i7 6700K MSI Z170a Xpower gamer titanium 32GB Corsair Dominator Platinum DDR4 2666 (4x8GB) CMD32GX4M4A2666C15 Edited December 7, 2015 by 1hardway Link to comment Share on other sites More sharing options...
1hardway Posted December 7, 2015 Author Share Posted December 7, 2015 Last night, I tested the voltage at the DIMM slots and in XMP (2666MHz) I was getting 1.219V. I upped it to 1.23V in the BIOS, which gave me 1.24V at the DIMM slots according to the multimeter, and manually set the RAM to 2666 MHz. I ran Memtest86 all night and got no errors, so the memory now seems to be working at the 2666 MHz frequency. I am not sure how to feel about it though. Corsair claims that this kit works at XMP setting 1 (2666 MHz @ 1.2V), and I guess if we are rounding to one decimal place, 1.24V is still 1.2V, but it is not working with XMP. Has anyone else had a similar issue with this memory? It's pretty high end stuff and I'm a little put off that it's not working as advertised, but it is working now. I feel like I got a marginal kit. Link to comment Share on other sites More sharing options...
FEAR6655 Posted December 9, 2015 Share Posted December 9, 2015 Test the DIMMs in Memtest86+ individually (one at a time) at the rated XMP settings. See if you can narrow it down to a single DIMM. Could also just be the IMC. Skylake is known to require a bit of voltage tweaking to get stable with >2133MT/s, especially with four DIMMs. Link to comment Share on other sites More sharing options...
x4xnation Posted April 3, 2020 Share Posted April 3, 2020 I know its an old thread. But I am also experiencing same issue with ram. Can you tell me what did you do to get the system stability apart from increasing DRAM voltage? Thanks Link to comment Share on other sites More sharing options...
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