RAM issue?

Tetras · 1 Feb 2025 at 21:17

dandos23 said:
Just restarted the PC and it hasn't posted since lol

Hmm, I believe you can use a setting in the BIOS to fix slow POST times normally, except this is an extreme case: "memory context restore".

dandos23 · 2 Feb 2025 at 09:50

So, it still hadn't posted when I got up so I forced a shutdown and it started up straight away. It is still running at the same speed though (3600MT/s).
This is what the timings look like on CPU-Z

It is the same for every slot. The recommended voltage for my RAM is 1.25v. I don't know what the voltage is at the moment, 1.1v or 1.35v (i thought the max was 1.3v)
I have no idea how to change the timings or frequency (or if its even worth it).

ED209 · 2 Feb 2025 at 13:21

As Tetras mention, try and disable memory context restore and see if this helps.

If its a ram training issue this should help.

dandos23 · 2 Feb 2025 at 13:57

So, I have managed to disable memory context restore, enable EXPO and get it to 4800MHz. Reckon this will be the best I will get with 4 sticks.

Tetras · 2 Feb 2025 at 14:21

dandos23 said:
So, I have managed to disable memory context restore, enable EXPO and get it to 4800MHz. Reckon this will be the best I will get with 4 sticks.

That sounds pretty good and will minimise the performance loss, I'd be happy with that.

dandos23 · 2 Feb 2025 at 18:12

I have even managed to restart the PC and it still boots up properly. Thank you to everyone that has helped get to the bottom of this and also educate me in the ways of DDR5 and AM5.

ED209 · 2 Feb 2025 at 18:20

dandos23 said:
I have even managed to restart the PC and it still boots up properly. Thank you to everyone that has helped get to the bottom of this and also educate me in the ways of DDR5 and AM5.

Glad it seems to be working again. Just strange how its been fine for a month and then this happens

dandos23 · 2 Feb 2025 at 18:43

Im still blaming the update, whatever it was. It only happened when the PC needed to restart to complete an update, then it wouldn't post. Although looking back at it now, it might have been that it would have posted if left long enough and I was too impatient and didn't wait long enough. Regardless, I'm just glad its over (for now lol).

mickyflinn · 2 Feb 2025 at 18:56

dandos23 said:
So, it still hadn't posted when I got up so I forced a shutdown and it started up straight away. It is still running at the same speed though (3600MT/s).
This is what the timings look like on CPU-Z

It is the same for every slot. The recommended voltage for my RAM is 1.25v. I don't know what the voltage is at the moment, 1.1v or 1.35v (i thought the max was 1.3v)
I have no idea how to change the timings or frequency (or if its even worth it).

Select memory not SPD for timmings and it will show current status.

dandos23 · 2 Feb 2025 at 21:05

Well, this was yesterday

And this is today

Should be a bit better than it was.

Tetras · 2 Feb 2025 at 21:15

dandos23 said:
Should be a bit better than it was.

I think a lot better, you only lose a few percent in most workloads according to Puget's testing (there are some tables at the bottom):

Impact of DDR5 Speed on Content Creation Performance (2023 update)

DDR5 memory has kits rated for up to 8400 Mbps, while desktop CPUs only officially support up to 5600 Mbps. How much does running at official specifications actually impact performance in common content creation applications?

www.pugetsystems.com

Whereas, the benefit from not running out of RAM would be very large indeed.