Might graphical errors be down to a failing memory controller?

[-)b(-]

I have had issues in the past from running the DRAM voltage too high for 5 months because my mobo manufacturer said I could, then changing their mind. I'm not sure the max dram voltage an Intel 6600k cpu can go at but I've currently undervolted my DDR3 memory down to 3.50v from 1.50v.

For the last 2 months everything ran fine at 1600Mhz with the new voltage of 1.35 (the normal was 1800Mhz @ 1.5v) but just recently starting up PayDay 2 the character on the start screen had a blurry mask, then in CrimeNet all the icons were flickering and glitching. I left the game to desktop and a few seconds later the monitor turned itself off and went into power saving mode. I had to reboot the computer for things to work again.

Could this be a failing memory controller because of all the months running at 1.5v? I've since reduced the frequency further down to 1066Mhz hoping that will help but kept the voltage at 3.50.

[Fluffy]

apparently it can
http://www.kitguru.net/components/motherboard/anton-shilov/intel-prolonged-usage-of-ddr3-memory-at-default-voltages-can-damage-skylake/

you might be fine though it could have just been a glitch.. what ram are you using?? interesting that u are saying u undervolted from 1.5v to 1.35v.. skylake only supports ddr3l or ddr4 up to 1.35v

[Bad 💀 Motha]

For DDR3, you shouldn't be going above 1.5
And BTW the max is around 1.65 or so.
So IDK where you get 3.5V at

And why did you even buy a DDR3 board for LGA-1151?
Very bad idea to be honest.

Anyways, go in the BIOS > go to XMP and select the correct profile.
Or on some boards, XMP is just Enable/Disable; so try it on Enabled if that is true for you.

XMP will lock in the RAM spec'd settings via an XMP ROM onboard the RAM; and in-turn apply those in the BIOS just for RAM.

[-)b(-]

The ram is called Kingston KHX1866C10D3/8G and have 16GB in total.

At the time of buying the "Z170-P D3" motherboard Asus advertised that it supported both ddr3 and DDR3L for the Skylake cpu, but they've since stopped saying ddr3. I didn't think I had to care about voltage as thought the mobo would only work with the right sticks anyway (and I'm an amateur builder), which is true most of the time, but Asus messed up with saying it had ddr3 support for the Skylake.

I know you said it might be just a glitch but it looked pretty critical in the game menu and the monitor lost power at desktop which required a reboot. If it happens again then there's not much else I can do as the voltage should be in the safezone.

[-)b(-]

Originally posted by Bad-Motha:

And why did you even buy a DDR3 board for LGA-1151?
Very bad idea to be honest.

XMP will lock in the RAM spec'd settings via an XMP ROM onboard the RAM; and in-turn apply those in the BIOS just for RAM.

Because the board has a 1151 socket and said it supported ddr3 and DDR3L.

Also XMP isn't available as the memory or board knows it shouldn't be there with a Skylake so doesn't give the option. I've undervolted and underclocked to accommodate the cpu but have had to do this again because of the recent system failure.

[Bad 💀 Motha]

Skylake CPUs support generally all the DDR3 and DDR4

What is actually better defined as supported will depend on the Motherboard.

Your board supports both DDR3 1.5V and DDR3L 1.35V
However you can NOT mix them.

Then try setting the RAM to SPD

If XMP is not available, and your want it to run at 1866 CAS10 1.5V (the rated specs) then you will have to manually set that via Manual Overclocking.

[-)b(-]

I undervolted because I thought I was damaging the cpu with the past system feezes and graphical corruptions when ran at 1.5v. Lots of people told me I was.

Just this recent episode after 2 months of normality got me rethinking.

[Fluffy]

the memory controller is on the skylake cpu its not "advised" by intel itself to run 1.5+ v memory with skylake... just as its not advised by intel to run over 1.55v on socket 1150/1155 cpus..

http://wccftech.com/skylake-does-not-support-ddr3-damage-ddr3l-only/
http://www.eteknix.com/intel-admits-ddr3-ram-can-damage-skylake-processors/
http://www.tomshardware.com/news/skylake-memory-support,30185.html
http://wccftech.com/skylake-does-not-support-ddr3-damage-ddr3l-only/