ddr3 ram bsod when overclocking

popxnxdrop · Mar 25, 2016

I'm kinda new to overclocking and need some advice here are my system specs

msi z87-g41 pc mate motherboard
intel I7 4790 cpu
Corsair Vengeance 16GB (4x4GB) DDR3 1866 MHZ

At stock speed the memory is running at 1333 mhz and I'm trying to get 1866 mhz when I set it to xmp profile in my bios it runs at 1866 mhz but when I try gaming I get a bsod after about 30min's sometimes it takes longer before i get the bsod i've been able to game for up to 4-5 hours before it happens.When I boot up my pc and surf the web it seems to stay stable even after leaving my pc on over night.It only has happen when gaming. I've also tried manual OCing the ram to 1866mhz using the same timing as it would if it was running under xmp with voltage set to 1.5 with the same results in my bios there's dram reference clock that I haven't touched it stays at auto the 2 other options are 200 and 266.
My bios is up to date I've seen other people online say that there oc tool or program would only get the ram to 1600 stable I have no idea what the clock speeds would be for 1600mhz so i never tried that speed. I'm so new to OCing that I figured if I use the same clock speeds that the xmp profile uses for 1866mhz that it must be the same for manual OC at 1866mhz. I would really like to get the 1866mhz out of my ram I'm pretty sure it would speed my pc up some cuz when I run 3dmark11 with the ram at 1866 my score goes up almost 1,000 compared to my score with ram at 1333mhz.
Any help would be much appreciated.

Shaun o · Mar 25, 2016

That old chestnut.

Anyway from what you are describing.

The more load or work memory is asked to do the more power each ram stick requires in order to keep it`s self stable.
If you set the memory up manually.

Then make sure that you read all of the information provided on the ram sticks n relation to the speed, and memory timing values, and the voltage.

Checking that each is right in the bios settings.
If your system still becomes unstable at the recommended or stated settings.

The fix to stop it crashing under load conditions such as gaming.

Is to manually raise the voltage of the memory sticks by about 0.250Mv in power.
Save the changes in the bios before you exit it.

And test the system again for stability when playing a game.

Sometimes all it requires is a small voltage in crease.
Because the motherboard is slightly out on the voltage to the memory modules, or is fluctuating in output voltage slightly.
Or that the power supply has a slightly lower voltage rating output to the motherboard for the memory, and also fluctuates in voltage output slightly.

You find this more if your power supply unit is of a cheap and not very well branded name.
And the over all wattage it can output.
Fluctuation of voltages can happen more with a power supply unit if it is at it`s maximum wattage, voltage and amp output of the unit. Also the age of the unit is a defining factor as to how stable the power output is.
As output degrades over time.

A slight dip of 0.250Mv is enough to cause memory to bork, freeze, or reset a system when under load, and starved of a lack of voltage.

Remember its 0.250Mv increase a quater of a volt, if the bios of the motherboard allows you to change the voltage in MV steps.

Just one more point, but worth checking.

The type of memory the module uses buffered, or un buffered. most commonly used.
If the memory states ECC anywhere on the information sticker for the memory type or configuration.

Then any option in the bios that states ECC mode must be enabled to prevent errors or crashing.

If buffered, or un buffered memory is used. it is important to make sure the Ecc option is disabled in your bios if the option exists.

Having it enabled when buffered or Un buffered memory is used. can cause system instability on some motherboards with the memory.

popxnxdrop · Mar 25, 2016

Shaun o :

That old chestnut.

Anyway from what you are describing.

The more load or work memory is asked to do the more power each ram stick requires in order to keep it`s self stable.
If you set the memory up manually.

Then make sure that you read all of the information provided on the ram sticks n relation to the speed, and memory timing values, and the voltage.

Checking that each is right in the bios settings.
If your system still becomes unstable at the recommended or stated settings.

The fix to stop it crashing under load conditions such as gaming.

Is to manually raise the voltage of the memory sticks by about 0.250Mv in power.
Save the changes in the bios before you exit it.

And test the system again for stability when playing a game.

Sometimes all it requires is a small voltage in crease.
Because the motherboard is slightly out on the voltage to the memory modules, or is fluctuating in output voltage slightly.
Or that the power supply has a slightly lower voltage rating output to the motherboard for the memory, and also fluctuates in voltage output slightly.

You find this more if your power supply unit is of a cheap and not very well branded name.
And the over all wattage it can output.
Fluctuation of voltages can happen more with a power supply unit if it is at it`s maximum wattage, voltage and amp output of the unit. Also the age of the unit is a defining factor as to how stable the power output is.
As output degrades over time.

A slight dip of 0.250Mv is enough to cause memory to bork, freeze, or reset a system when under load, and starved of a lack of voltage.

Remember its 0.250Mv increase a quater of a volt, if the bios of the motherboard allows you to change the voltage in MV steps.

Just one more point, but worth checking.

The type of memory the module uses buffered, or un buffered. most commonly used.
If the memory states ECC anywhere on the information sticker for the memory type or configuration.

Then any option in the bios that states ECC mode must be enabled to prevent errors or crashing.

If buffered, or un buffered memory is used. it is important to make sure the Ecc option is disabled in your bios if the option exists.

Having it enabled when buffered or Un buffered memory is used. can cause system instability on some motherboards with the memory.

yes i think you are right when i go to my bios it shows that the voltage is set to 1.5 but where it shows how much voltage it is getting it shows 1.476

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