Ram or Mobo issue

[Bigscary Monk]

Hey everyone,

I built a new pc late last year and have finally had some time to start troubleshooting it as I can't seem to be able to use XMP profiles on my ram. I originally thought it was a mobo issue as I was having troubles overclocking the cpu and ram, but I'm able to get the cpu clocked now at 5.0 each core and it runs fine. Now if I run two of my four sticks of ram, I can run the xmp profile at 3600 (stock) but as soon as I add more my computer won't post. Have to go back into bios and turn off xmp to able to boot again.

 

Pc build -

Asus maximus hero xi

9900k

32gb corsair rgb pro - 3600

evga 2080 ti ftw3

samsung 970 evo 1tb nvme

corsair h100i pro

corsair 500d se rgb case

corsair RM850xi white

 

Any help would be appreciated !

[DoctorNick]

Have you tried to add all memory and then enable xmp? Is your kit sold as 4 sticks or 2? If only 2 sticks, then the profile could be optimized for only 2 sticks. If that is the case, set the primary timings manually to whatever it is, for example: 16-18-18-36, 2t and DRAM voltage to: 1.35v (on your board you only set 16-18-36)

[Bigscary Monk]

12 minutes ago, DoctorNick said:

Have you tried to add all memory and then enable xmp? Is your kit sold as 4 sticks or 2? If only 2 sticks, then the profile could be optimized for only 2 sticks. If that is the case, set the primary timings manually to whatever it is, for example: 16-18-18-36, 2t and DRAM voltage to: 1.35v (on your board you only set 16-18-36)

Yup if I have all 4 in the mobo and enable xmp the computer won't post. It works fine if I leave them at 2133mhz with all 4 sticks in but if I enable xmp it won't boot. It was a 4 stick set that I bought.

I haven't tried manually clocking the ram myself, was never super familiar with it and assumed if xmp won't work that might not work either. But I can definitely try it.

[DoctorNick]

1 minute ago, Bigscary Monk said:

Yup if I have all 4 in the mobo and enable xmp the computer won't post. It works fine if I leave them at 2133mhz with all 4 sticks in but if I enable xmp it won't boot. It was a 4 stick set that I bought.

I haven't tried manually clocking the ram myself, was never super familiar with it and assumed if xmp won't work that might not work either. But I can definitely try it.

Yeah should work, unless one stick is bad. If you cant find the settings go to the tab in BIOS -> Tools and then SPD. But as said earlier, just set primary timings.

[Bigscary Monk]

3 minutes ago, DoctorNick said:

Yeah should work, unless one stick is bad. If you cant find the settings go to the tab in BIOS -> Tools and then SPD. But as said earlier, just set primary timings.

I will give that a shot tomorrow, thanks!

[DoctorNick]

5 minutes ago, Bigscary Monk said:

I will give that a shot tomorrow, thanks!

Cool, remember setting dram voltage before giving up. And test this before applying the overclock.  

Love, MOM

[GoldenLag]

37 minutes ago, Bigscary Monk said:

Yup if I have all 4 in the mobo and enable xmp the computer won't post. It works fine if I leave them at 2133mhz with all 4 sticks in but if I enable xmp it won't boot. It was a 4 stick set that I bought.

I haven't tried manually clocking the ram myself, was never super familiar with it and assumed if xmp won't work that might not work either. But I can definitely try it.

4 stick configs are less reliable than 2 stick configs, and its likely XMP just failed. 

 

put in 1,4 or 1,45v on the memmory and run it at its rated speed, should fix it.