XMP unstable

[TheMegaDriver]

Hi chaps,

 

I have build a PC and I am unable to get the RAM above 2666MHz at all.

 

My system:

i5 12400f

Gigabyte B660 Gaming X DDR4

Crucial P3 1 TB NVME SSD

Asus RTX 3070 OC (yey for the Crypto crash and used market)

4x8GB Corsair Vengance LPX 3600MHz

Be Quiet Straight Power 650 Gold

 

Activating XMP or setting the timings and clockspeed manually just doesn't work. Bios is on the latest version.

If I activate XMP or set it manually my game will crash (F1 22 or Assetto Corsa). The higher the clockspeed the faster it will crash. For 3600MHz it will crash in about 5-10 minutes. At 3000 MHz about 10-20 minutes. Only the default seems to be completely stable.

 

Has anyone an idea what might be going on?

[RandomLegoBrick]

is it a matched set of four sticks? (did they all come in one box)

if not that's probably the issue and you'll have to run them at a much lower speed or base clock.

[TheMegaDriver]

The sticks are absolutely identical, all four are CMK16GX4M2Z3600C18 and listed by Gigabyte as supported. Two sets of two. I matched them to their corresponding sockets. I cannot see any difference between them.

If I only use one set the behaviour is no different.

[-rascal-]

4 hours ago, TheMegaDriver said:

The sticks are absolutely identical, all four are CMK16GX4M2Z3600C18 and listed by Gigabyte as supported. Two sets of two. I matched them to their corresponding sockets. I cannot see any difference between them.

If I only use one set the behaviour is no different.

 

Corsair Vengeance LPX kit CMK16GX4M2Z3600C18 is on the QVL List, HOWEVER, Gigabyte has only confirmed tested a 2x DIMMs (2 x 8GB) setup works.

They HAVE NOT confirmed it for 4x DIMMs (4 x 8GB).

 

Try running 2x sticks in Dual Channel placement, and see if XMP runs stable, and report back.

 

[TheMegaDriver]

It makes zero difference.

[MisterCrow]

Try swapping out the two sticks you've tested, for the other two.

[TheMegaDriver]

At that point now I am just giving up. XMP is just bullshit. I asked mates of mine with gaming PCs, same story. Non of them could get it to work in a stable fashion. XMP seems to be a scam.