crashing when using XMP

[hyckz]

so i just made a new pc, with the following components.

 

12700kf ( updated ) (not OCed yet)

CMW16GX4M2Z4000C18 16gb ram corsair (now running 2633)

Z690 Aorus Elite DDR4 ( bios just updated)

RTX 3080 nvidia

RM1000x PSU

 

it was running stable, til i wanted to clock the RAM to its recommended speed 4000mhz. through XMP.

after running XMP pc wont start  and had to do a CMOS reset for it to work agian. didnt even get bios screen to pop.

 

am i doing something wrong? i only saw 1 profile for xmp aswel..

[An0maly_76]

Board may not support that specific kit (capacity) at that specific speed. Go over the QVL and compatibility lists VERY carefully. I'm RMA'ing an Asus right now that can DOCP 2666 to 3200 for 16GB of Crucial Ballistix, but not for 32GB... Everyone's screaming at me that they don't test every kit, however, the 2x16 kit I have is specifically listed as only supported at 2666, whereas a single 16GB DIMM of my RAM would be fine at 3200.

[Pixelfie]

If you run 1 stick, can you run at the rated speed? And what about the other one?

 

9 minutes ago, hyckz said:

16gb ram corsair (now running 2633)

Pretty sure this is the problem. A lot of RAM sets from Corsair have binning issues. If you do what I suggested above that might help diagnose if this is the case or not.

[RONOTHAN##]

22 minutes ago, hyckz said:

til i wanted to clock the RAM to its recommended speed 4000mhz

Yeah, that's the problem. Gigabyte Z690 boards are pretty terrible when it comes to memory support for this generation, and 4000MHz is beyond what you can reasonably expect in Gear 1. Try enabling XMP but before you boot, lower the frequency down to 3600MHz, keeping all the other settings the same and see if that helps at all.

[-rascal-]

DDD4-4000 might be too of aggressive XMP overclock.

What you can try is enable XMP, AND then manually tune the memory frequency down 1 or 2 steps (i.e. DDR4-3866, DDR4-3800, etc).

See if the slightly lower frequency is able to run reliably.