My journey from AM4 to AM5

I didn’t get a response to my question, so I used my free time to find the answer myself – here’s the link below.
AMD Ryzen 7950X3D - DDR5-6400 XMP-1 or manual timing to 6000MHz? | Overclock.net

I’m wondering why no one on the overclock forum asked about the memory model and A-die or M-die? This detail is crucial because certain timing values won’t work with M-die while they should be fine with A-die.

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That’s a good point. I’ll pan around in a NYC flight (sky, ground) and see how that number varies in both scenarios (cap on, cap off.) Then do the same over the Sahara.

The dance.

I’m puzzled by that as well. It’s obvious that over the Sahara capped at 60 FPS, the Main Thread latency is much lower (7ms vs. 13ms.) But GPU latency increases from 13ms to 17ms, leading to around 30% higher overall latency than when it’s uncapped.

I agree 100%. But low latency is important, don’t you think? The question is, does balanced Main Thread/GPU latency matter more than the lowest possible Main Thread latency? I’ve always sought the latter.
The 1% Lows were much improved in the uncapped scenario.

That’s the next step. I’ve been doing these tests with minimal addons (FSUIPC and Better Bravo Lights are active.) I’m going to start adding on my usual, one at a time - including REX and all the MAMU - and continue testing.

Either way, it’s very encouraging that I should even consider capping framerate with PG on, traffic @ 50%, and LOD set to 205/145. I’m seeing almost no ‘object popping’ anymore. And that’s huge. Because it was horrible before.

Sure, I suppose it should be :slight_smile:

But I do think it’s easy to get lost in these numbers and chasing them. I’m not even sure how they relate to each other. What is most important to me by far is how it FEELS when flying. That is all that matters really.

I don’t know about the 0.1% lows etc. I don’t really have low FRAME RATE ever, I just get the hitching. Which is nothing to do with the general health and balance of the CPU vs GPU I think. It’s just JANK flightsim code and the way mods integrate into the ecosystem (…badly).

I have also spent many months (actually let’s just call it a few years by now) tweaking and testing, and although not scientific as your approach, I got a good feel for it within what I can understand. What I have now is as good as I can get it, short of potentially a Windows reformat and reinstall everything which I just have not got the energy for!

Side-note - my hunch about Mamu Powerlines seems to have been correct. Unticked JUST that (leaving this many mods active still, plus some background apps)…

image

…and so far :crossed_fingers: it has really smoothed out the Triple-S’s (so maybe it was a case of MADness and UPS all along? :stuck_out_tongue: ) .

Or could just be good old WTF: LOSS: The Lexicon Of Sim Stutters

1% lows (I think) has a lot to do with the variability of the data that we see as ‘smoothness.’ You can have 60 FPS average, but if 1% of your framerate is 20 FPS, you may see stuttering. In all the videos I see, that gaming metric seems to be mentioned as mucho importante.

You should download CapFrameX and capture a few flights. It’s very illuminating.

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BTW, your stutter acronym list is HILARIOUS!
Sad that it even exists…but hilarious.

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Here are three screenshots of a test I just did.

Some variability in Sys Alloc numbers, but not as drastic as when I capped framerates.

Thanks for that. Yeah I see. Still don’t know what it means :rofl:

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Nor do I. I did discover that if I always fly looking up at the sky I can get pretty good FPS. :stuck_out_tongue_winking_eye:

You’re a genius! Why didn’t I think of that!
Ah, but what if you have heavy weather?? :rofl:

Another test for me to do.
At least I’m flying while tweaking, eh? :partying_face:

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You just wait until you get VR. You will have to do this all again :wink:

Sim timeline:

  1. Build 5800X / GTX 1080 system.
  2. Upgrade to 5800X3D
  3. Upgrade to RTX 3090 Ti
  4. Replace 5800X3D with 7950X3D.
  5. Give bank account a rest.
  6. Upgrade 3090 Ti to ???
  7. Give bank account another rest.
  8. Buy VR headset.
  9. Die of old age.

:smile:

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LOL!!! You are half way there. Hopefully not the last step!! :slight_smile:

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I’m hoping I’ll still be flying in 15 years when I’m 80.
We have some 80+ simmers here, which if you ask me is pretty awesome!

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You do realize you’re going to be doing this all over again in 2 months :crazy_face:

A new GPU - maybe. And VR headset. And this ashtray, and that alarm clock. But that’s all I need. :smile:

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Looking forward to your journey to AM6 platform!

Not happening for a few years at least, my friend.
I’m a one-and-a-half-generations behind the times kind of guy.

When the sim first became available for pre-sale, a lot of folks recommended that I not build AM4, and wait a few months for the first AM5 parts. My 5800X3D worked well for a couple of years, but it’s showing its age. My 3090 Ti is doing OK as well, but its days are numbered, for sure.

Probably 6 months to a year before I upgrade the GPU.
CPU is good for a while.

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Control flight

Here we go. Flying blind in IMC. :rofl:
I loaded flights with default ‘Rain’ and ‘Storm’ presets.
Doesn’t seem to significantly affect the mystery metric.

The ‘Storm’ preset is wild. Lots of lightning, and if I didn’t know any better I would swear I was flying through some serious updrafts and downdrafts. At one point I flew into a storm cloud with heavy rain under it. I started overspeeding and losing altitude FAST. Had to disable AP, throttle way back, and pull the yoke to level the plane. Then I suddenly started gaining altitude like crazy and had to push the yoke almost to the forward limit and push the throttle/prop levers to the firewall.

It was fun!

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…which still doesn’t make sense. I have 64gb RAM and it’s usually around 35% usage. Highest I have seen (which I think was a bug one time) was 48%