Question System won't boot with DOCP disabled ?

[animemangamer]

The video above shows my initial results right after I installed the 7200MT/s dual channel kit in my AM5 system and they seem to default at 6400MT/s. I was initially afraid it won't even boot and give me the orange led (dram error) but it worked as soon as I boot it up, well at least for me.

I recently replaced my 64GB (16GBx4) 6000MT/s kit because I was coming from an Intel platform and switched back to AMD and but wasn't aware AM5 only accepts 2 sticks so I was stuck with only 32GB dual channel 6000MT/s because if I force 4 it would run all 4 @ 3600MT/s.

I sold those kits and temporarily was using another 32GB (16GBx2) at 6400MT/s and it was working fine with DOCP enabled or disabled while I was waiting for a new kit I ordered below:

G.SKILL Trident Z5 Royal Series 48GB (2 x 24GB) 288-Pin PC RAM DDR5 7200 (PC5 57600)F5-7200J3646F24GX2-TR5S​

• DDR5 7200 (PC5 57600)
• Timing 36-46-46-115
• CAS Latency CL36
• Voltage 1.40V

I needed more than 32GB so I settled for the 48GB kit above because the 64GB version was too expensive and I really wanted the Trident Z5 Royals.

As the video, above everything seemed to work fine until I messed with the DOCP in the BIOS:

Below was the default (I didn't touch anything) right after I swapped in the kits:

But I was curious what would happen if I enabled DOCP and it shows the following settings below:

I applied it, restarted, and hit F2/Del before windows loaded up and went back to BIOS and it seemed to boot just fine and it's now running 7200MT/s

The main issue I encountered is when I tried to disable DOCP (I was hoping by doing this will revert back to 6400MT/s) and it applied the following settings:

After doing this my computer was stuck with orange led (dram error) and no matter how long I wait or whether I swap the sticks position and rebooting. It just won't boot and I had no choice but to remove the CMOS battery since I can't reach my motherboards clear CMOS pins.

After I boot it back into the BIOS I enabled DOCP again and these are my final settings so far:

I don't know why disabling DOCP will cause my system to not boot and stuck with the orange led (dram error)? Isn't that the default setting when I initially installed the new ram kits and it defaulted to 6400MT/s? Isn't it suppose to be the other way around where by enabling DOCP it runs at 7200MT/s which would result in error and not boot due to stability with AM5?

Question is, do I just keep my system running like this at 7200MT/s, how would I know if it'll be stable or not? Should I change things? Because disabling DOCP will result in my system not booting for some reason.

Somehow I regret even messing with the DOCP settings, I could've just left it as is right after I installed the ram. It was already running at 6400MT/s which as advised is the optimal speed to run DDR5 with AM5. What should I do?

Thanks in advance for any help

 

[JayGau]

If you managed to POST after clearing the CMOS it means that your system works with DOCP disabled. And you didn't tell us what were the default settings after the CMOS reset.

When you installed the new ram without touching anything you kind of got lucky it posted. Then enabling DOCP loaded your new ram profile and it worked. But when you disabled it, the board tried to set things back to default with the "auto" values but I bet some settings from your old configuration (like FCLK and some timing values for example) were still set and were not compatible with the new "auto" values.

Now that you did a CMOS reset, you should be able to switch between DOCP enabled and disabled. If you didn't change anything else than enabling DOCP, you could try to load the default BIOS settings and look at the ram values (that would tell you the real default settings). Try to boot like this. If it works, try to enable DOCP. Reboot and see if still works. If it does, go back to the BIOS and just disable DOCP (without reloading BIOS default settings). If you can reboot like this, then puzzle solved: it was just some remnants from your old ram configuration.

By the way, the standard default speed for ddr5 is 4800 MT/s, not 6400. And there are other values that are as important as the clock speed to look at, mainly the CAS latency and the voltage. I would recommend enabling DOCP through the AI Tweaker instead of the EZ-mode if you want to keep an eye on those values.

 

[animemangamer]

Hi, thank you so much for the detailed response!

If you managed to POST after clearing the CMOS it means that your system works with DOCP disabled. And you didn't tell us what were the default settings after the CMOS reset.

Sorry I didn't realize that, ok so after running the system as is for the past couple of hours @ 7200MT/s I decided to disabled DOCP again in the BIOS and after rebooting--- It's on boot lock again with the orange dram led error. So I take out the CMOS battery again and then boot into BIOS and see that the default is actually 5600MT/s

What I didn't do is load into Windows or restart my PC, I guess I won't know if it'll continue to do the orange led dram error since I skip that step. Sorry I'm tired, I'll try it tomorrow.

What did do while I was in the BIOS was manually set the frequency to 6400

And I boot in to Windows with changing only that setting alone.

I'll post more update tomorrow/later today with your precise instructions. Thanks!

 

[alceryes]

DOCP (like XMP and AMP) includes frequency, timing, and voltage settings.

That last part is probably why it's not posting/booting. If you turn off DOCP, several of your voltages are probably getting reset to default. These default voltages won't work with those sticks at frequencies and timings higher than the absolute base.

 

[Misgar]

This review in Tom's says your RAM is too fast for a 7700X, but perhaps your 9700X is a really good sample.
https://www.tomshardware.com/reviews/gskill-trident-z5-rgb-ddr5-7200-c36-48gb-review

"We didn't benchmark this kit on our Ryzen 7000 test platform because it can't reach the peak speeds needed to unlock the best performance from this kit, and it wouldn't make sense to purchase this kit to use it at the standard DDR5-5600 transfer rate.

The current state of the AGESA code and silicon limitations put AMD's Ryzen 7000 processors at a disadvantage regarding memory support. However, the good samples with a powerful IMC (integrated memory controller) typically support DDR5-6400 to DDR5-6600 memory.

For our particular Ryzen 7 7700X, DDR5-6400 is the ceiling, so DDR5-7200 is beyond the bounds of possibility."

Although my old Kingston DDR5 RAM defaults to 4800MT/s with DOCP disabled, I'm starting to wonder if your much faster RAM defaults to DDR5-5600, as implied in the text above. 5600MT/s might not work in an older AM5 7000 system, where 4800MT/s might be safer, but will probably be OK with a modern AM5 9000 CPU. It may be worth checking the mobo RAM QVL (Qualified Vendor List) but it may not include recent DIMMs.

With XMP/EXPO/DOCP switched off, I'd expect most DDR5 RAM to default to 1.10V. With DOCP switched on, I'd expect DDR5 voltage to increase to something between 1.20 and 1.30V, but some manufacturers' SPD settings might run even higher voltages for extra speed.
https://gadgetsranked.com/what-is-safe-voltage-for-ram/

"There are several types of RAM, each with its own voltage requirements. Here are some of the most common types of RAM and their typical voltage ranges:

• DDR3 RAM: 1.5V – 1.65V
• DDR4 RAM: 1.2V – 1.4V
• DDR5 RAM: 1.1V – 1.3V

It’s essential to note that these are general voltage ranges, and the specific voltage requirements for your RAM may vary depending on the manufacturer and model."

Regardless of what memory speed you choose, I recommend booting MemTest86 from a USB stick and run a full scan (several hours) to check stability. If you see any errors (even one) your RAM is not stable and you need to change something (reduce the speed, relax the timings, e.g. CL, or manually increase the voltage (take care). If you change the DOCP speed, run another full MemTest.
https://www.memtest86.com/