System won't boot with 2133Mhz RAM

mrbotegal · Sep 13, 2017

I just bought some DDR3 16gb 2133Mhz RAM (this one: http://www.corsair.com/en-gb/vengeance-16gb-dual-channel-ddr3-memory-kit-cmz16gx3m2a2133c10) but my system fails to boot whenever I turn X.M.P on. Turning X.M.P on sets all the correct timings, voltage and frequency as advertised, but the system just fails to start and then resets me back to 1333mhz.

The system boots if I set the memory frequency to 1866 Mhz (with XMP turned OFF) but no higher.

Motherboard: Gigabyte GA Z68AP-D3 rev 2.0
CPU: I5 2500k
RAM: Vengeance® — 16GB Dual Channel DDR3 Memory Kit (CMZ16GX3M2A2133C10)

Zerk2012 · Sep 13, 2017

Manually set the timings, speed, and voltage but set the voltage to 1.55 volts not 1.5.
You might also need to overclock the i5 to run faster to get the memory to 2133.

mrbotegal · Sep 13, 2017

Zerk2012 :

I tried what you said and still no luck

I've tried setting the speed to 1866 and leaving the timings on auto, and that allows the system to boot. But I can't get to 2133, which is what I paid for.

scout_03 · Sep 13, 2017

this is could be the issue see the max speed on it for ram is 1333 https://ark.intel.com/fr/products/52210/Intel-Core-i5-2500K-Processor-6M-Cache-up-to-3_70-GHz

mrbotegal · Sep 13, 2017

scout_03 :

Yeah I recently saw this whilst looking up my issue online. But people run 1600mhz ram on i5-2500k no problem, and also I can run 1866mhz ram, just cant get it to 2133.

scout_03 · Sep 13, 2017

board could go to it but cpu has a limit try to use the cpu-z spd fastest jedec settings and put them in manual in uefi bios for the ram .

mrbotegal · Sep 13, 2017

scout_03 :

Sorry im a noob with this sort of stuff, could you explain a bit more what you mean? I have opened CPU-Z and i am on the SPD tab, what do I do from here?

scout_03 · Sep 13, 2017

what are the reading you see for the fastest sped on the jedec tab .

mrbotegal · Sep 13, 2017

scout_03 :

the fastest "jedec" is JEDEC #3, which has a frequency of 666Mhz. Next to that is "XMP-2132" which has a frequency of 1066 MHz

scout_03 · Sep 13, 2017

post a picture of this since if you put 666 x 2 =1333 for ram speed .

mrbotegal · Sep 13, 2017

scout_03 :

scout_03 · Sep 13, 2017

use the xmp settings in uefi in manual .

mrbotegal · Sep 13, 2017

scout_03 :

I have tried this already, as I stated in my original post. Whenever I turn XMP settings on, the system fails to boot.

scout_03 · Sep 13, 2017

dont turn xmp just set the settings manualy but this is special so much jump in speed from fastest jedec to xmp you might want to check with ram maker .

Zerk2012 · Sep 13, 2017

mrbotegal :

Did you set the timings to this.
10-11-11-31 trc to 54 command rate T2 then the speed to 2133 and the voltage to 1.55?
The 2133 speed is a OC for the board and memory controller and is not guaranteed.
I would try it again with the above timings and sped and set the voltage to 1.6
You could also try to loosen the timings to 11-13-13-31, 2133 and 1.6 volts.
From their if it don't work you will probably need to overclock the processor to the 4.6 area.

mrbotegal · Sep 14, 2017

Zerk2012 :

mrbotegal :

Did you set the timings to this.
10-11-11-31 trc to 54 command rate T2 then the speed to 2133 and the voltage to 1.55?
The 2133 speed is a OC for the board and memory controller and is not guaranteed.
I would try it again with the above timings and sped and set the voltage to 1.6
You could also try to loosen the timings to 11-13-13-31, 2133 and 1.6 volts.
From their if it don't work you will probably need to overclock the processor to the 4.6 area.

I've tried everything you said and still cant get it to boot

I guess I'll leave it at 1866. I should've read more about this before I bought it I guess :/

scout_03 · Sep 14, 2017

you could leave for 1866 now maybe in a bios update you will be able to run higher but i would contact ram maker to ask why there is a so high speed settings from fastest jedec to xmp .

System won't boot with 2133Mhz RAM

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