F3-2133C9D-16GXH + GA-Z68X-UD3-B3 + i7 2600k

[bs.of.dth]

I am unable to get the system to boot after enabling XMP Profile 2 and all settings on auto. I have tried numerous configurations with timings and voltages and I still get the same problem. The system will start up, then restart immediately giving an error about unable to boot due to voltages. I haven't even seen a loading screen when set to rated speeds.

I have tried with my CPU at 3.4GHz and 4.2GHz.

Booting at 1600MHz works fine, but 1866 or 2133 (manual settings and XMP profile 1/2) do not work.

Is this a motherboard problem, settings problem, RAM problem, or something else?

[bs.of.dth]

BIOS version is F13. Should I flash to U1e?

[Tradesman]

Would like to see your BIOS settings (particularly DRAM timings (Basic and the advanced/secondary), system voltages and CPU info when XMP is enabled - have a feeling it's prob off, GB never put a lot of time into their Z68 BIOSs, particularly for high freq and amounts of 16GB or better

[bs.of.dth]

Don't know if this means anything, but setting the BIOS RAM profile to Profile 2 sets it to 2134. Manually choosing the 21.33 option also does this.

Timings for Profile 2
CAS Latency: 9
tRCD: 11
tRP: 11
tRAS: 31
Those were set to the same values as listed by the RAM.

tRC: 42
tRRD: 6
tWTR: 8
tWR: 16
tWTP: 27
tWL: 7
tRFC: 22
tRTP: 8
tFAW: 25
Command Rate: 2
IO Latency: 1
Round Trip: 34

Profile Voltages for Profile 2
DDR: 1.6
VTT: 1.1

[bs.of.dth]

I just compared values for default 1333MHz and 2133 Profile settings. For 2133MHz, the default value for tRFC is 22, but for 1333 it is 184. I switched to Profile 2 and set tRFC to 184. The system started up fine.
However, this does not explain why it would not start when I disabled the XMP profile and set frequency to 2133 and the timings (CAS, tRCD, tRP, tRAS, tRC, and Command Rate) manually.

[Tradesman]

Try with changes to tRRD 7, tFAW to 27, tRFC to 208, VTT to 1.15, and start w/ VCCSA to 1.12

[bs.of.dth]

Those settings work.

[Tradesman]

Glad to hear, Enjoy!

[bs.of.dth]

Thank you very much. It was much appreciated!

[Tradesman]

Glad we got it on the first shot, it often takes some tinkering, have fun!