Troubleshooting 4 dimm run on 2400 or no post issue

[josh5671]

Spec:

2700x

MSI X470 gaming pro carbon 

4x 3200mhz Kingston predator rgb. 

 

Situation:

Recently added two more sticks of ram into system. Previous two sticks was running with xmp profile 2 3200mhz. 

But with 4 sticks, system won't post with any oc. Only manage run it default speed 2400mhz. (yet testing 2667mhz)

 

 

[Haro]

4 sticks is alot of pressure on the imc for zen + 

A couple of things 

Update the bios 

Now set the soc to 1.1 

Dram to 1.35 (1.4 if needed) 

Set the frequency to 2933 with docp / xmp enabled

If it boots use memtest86 and OCCT to verify that it's stable 

Anything over 2933 is technically an overclock to the imc for zen + so it's not guaranteed especially with 4 sticks 

Good luck 

Edited June 22, 2020 by TofuHaroto

[josh5671]

1 hour ago, TofuHaroto said:

4 sticks is alot of pressure on the imc for zen + 

A couple of things 

Update the bios 

Now set the soc to 1.1 

Dram to 1.35 (1.4 if needed) 

Set the frequency to 2933 with docp / xmp enabled

If it boots use memtest86 and OCCT to verify that it's stable 

Anything over 2933 is technically an overclock to the imc for zen + so it's not guaranteed especially with 4 sticks 

Good luck 

BIOS updated to second latest 2019 dec. as the latest  was beta.

 

I not the OC guy, just simply switch the xmp on....

DRAM 1.35 is talking 1.35v? 

what is soc...

 

 

I have test the XMP1(2933)/XMP2(3200)both unable to POST.

maybe is was the cpu hard limit?

[Haro]

Just now, josh5671 said:

DRAM 1.35 is talking 1.35v?

Yes

 

Just now, josh5671 said:

what is soc...

Soc ≈ memory controller 

It means more things but that's part of it 

[Yukha]

43 minutes ago, josh5671 said:

BIOS updated to second latest 2019 dec. as the latest  was beta.

 

I not the OC guy, just simply switch the xmp on....

DRAM 1.35 is talking 1.35v? 

what is soc...

 

 

I have test the XMP1(2933)/XMP2(3200)both unable to POST.

maybe is was the cpu hard limit?

override SoC voltage to 1.1v - 1.15v and DRAM 1.35v should be enough for 3200 MHz or lower

maybe tune down the sub-timing, your XMP profile could be too tight.. try 16-18-18-18-36 or higher

[josh5671]

On 6/22/2020 at 7:08 PM, TofuHaroto said:

Yes

 

Soc ≈ memory controller 

It means more things but that's part of it 

 

On 6/22/2020 at 7:53 PM, Yukha said:

override SoC voltage to 1.1v - 1.15v and DRAM 1.35v should be enough for 3200 MHz or lower

maybe tune down the sub-timing, your XMP profile could be too tight.. try 16-18-18-18-36 or higher

thank's for the help. 

I think I manage to run the system with nb 1.1v, ram 1.35v.3200mhz on 18-20-20-36 or something similar timing. 

 

Seen like the nb voltage was too low for 4 dimm. Only 0.7v as I seen that day. 

 

 

Yet stress test on ram. Using few days no issue but will do it later while free.