Question No boot after enabling EXPO profile for Corsair CMK32GX5M2D6000Z36 memory

[Rukh83]

I have finished building my new PC. I am using Corsair CMK32GX5M2D6000Z36 memory + Gigabyte B650M Gaming X AX motherboard.

After enabling EXPO profile for memory PC is not booting anymore so it seems setup for those sticks is wrong. Only fix for that is to reset CMOS to get back to defaults.

Any hints on how to look for correct setup? What am I missing?

Thanks.

 

[Lutfij]

Welcome to the forums, newcomer!

Can you manually input the timings and frequency for your ram kit, in BIOS? Leave voltage on AUTO for now. As for frequency, try working with 5600MHz instead of 6000MHz.

 

[SkyNetRising]

Any hints on how to look for correct setup? What am I missing?

Can you show screenshots from CPU-Z - memory and spd sections?
What slots are ram modules installed in?
Can you show a photo of your system with side panel removed?

 

[Rukh83]

Welcome to the forums, newcomer!

Can you manually input the timings and frequency for your ram kit, in BIOS? Leave voltage on AUTO for now. As for frequency, try working with 5600MHz instead of 6000MHz.

Thanks for the warm welcome I haven't tried that yet. I will try it later when I'll have more time on my hands. You think that the board is not able to support that speed?

Can you show screenshots from CPU-Z - memory and spd sections?
What slots are ram modules installed in?
Can you show a photo of your system with side panel removed?

Memory is installed in slots #2 and #4 as per the instructions, at least I think it is ;-)

Memory:

Slot #2

Slot #4

Build side view:

 

[SkyNetRising]

Overclock manually.
I understand, currently memory settings are on auto. Correct?

Input current settings manually.
4800mhz 40-40-40-77 1.1V. Should boot normally.
Next adjust latencies and increase voltage, keep current frequency.
36-36-36-76 1.25V. Test if you can boot your system. If problems, then increase voltage slightly. Do not go over 1.35V.
Next start increasing frequency and test after each step.
5000, 5200, 5400, 5600, 5800, 6000mhz.
When test fails, then return to previous settings, that worked.

 

[Rukh83]

Input current settings manually.
4800mhz 40-40-40-77 1.1V. Should boot normally.
Next adjust latencies and increase voltage, keep current frequency.
36-36-36-76 1.25V. Test if you can boot your system. If problems, then increase voltage slightly. Do not go over 1.35V.
Next start increasing frequency and test after each step.
5000, 5200, 5400, 5600, 5800, 6000mhz.
When test fails, then return to previous settings, that worked.

Hello again. I have tried overclocking manually but it didn't take long actually to the system stop booting.

I have tried 5200 + 1.25V and it booted.
Then I have tried 5400 + 1.25v, 5400 + 1.30v, 5400 + 1.35v but non of those voltages worked. When 5400mhz is reached system stops booting.

Current setting:

Any ideas on what I could try here?

 

[SkyNetRising]

You could try increasing latencies.
See if this works:
40-40-40-77 5400mhz
42-40-40-77 5400mhz.

 

[Rukh83]

You could try increasing latencies.
See if this works:
40-40-40-77 5400mhz
42-40-40-77 5400mhz.

No luck. Tried both settings @1.25V and 1.35V and got the same result: no boot. :-(

 

[SkyNetRising]

Try increasing Command rate to 2T.

 

[Rukh83]

Try increasing Command rate to 2T.

I have tried to find the Command Rate setting but it seems that this BIOS on this motherboard doesn't have such setting. It should be on advanced timing control but it is not there...

Also I did some reading in the meantime and it seems that this EXPO/XMP is supposed to be an easy way to OC memory for regular guys like myself. Though there is this lottery with memory die quality and vendor that might affect the results. I have Samsung ones that are apparently considered as ones of the hardest to OC?

 

[Rukh83]

Try increasing Command rate to 2T.

Ok, I think I have fixed the problem... kind of.

 

[SkyNetRising]

Ok, I think I have fixed the problem... kind of.

So - you bought new ram modules.
Just for 15% ram speed increase.

 

[Rukh83]

Well, I can send back those I had easily so no loss here. Just the hassle.

 

[Rukh83]

Anyway, thanks a lot for the help!