AMD 5800X3D, the new King for flight simulators?

[falcon_120]

Interesting, I never thought about that. So essentially start boosting settings until I see the uncapped frame rate average around 45? I tried reprojection and it looks terrible to me, I kept getting all that bubbling artifacting and OpenXR's FPS counter was saying I was never reaching above 38fps.

If my memory is right, which could not be the case, I read in a MSFS post about openxr that the bubbling artifact is caused by another setting in openxr I think it was %shake in one of the tabs, going to 0% solved that. Give it a try.

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[Dogmanbird]

MSFS is simply using more cores so it will generate more heat.

My thoughts too, but I was surprised as the 5900x was about 62 in DCS and 68 in MSFS. Same paste and same amount applied the same way, and not radically different in performance

 

[edmuss]

If I remember correctly, the 5800x3D is a single chiplet whereas the 5900x is a double chiplet, as such the heat density on the x3D is much higher; add the extra layer of cache on there as well and you'll get far more heat building.

[Dogmanbird]

yeah had read about that. anyway, as long as it works and doesn't burst into flames. 

[tomcat_driver]

Nothing that good ventilation doesn't solve. And winter. It's not overclockable anyways.

With 6 fans plus a U-14S, my PC sounds like a cisco 3650 booting up, but the 5800x3d never goes past sixty-somethings.

[VR Flight Guy in PJ Pants]

I am sure ventilation is great in summer, may be not so "cool" in winter...

[some1]

5800X3D heats up considerably due to the cache layer on top of the CPU itself. It's just the nature of the CPU, anything below 90C is fine, at or slightly below 90C is where you'll see throttling. 

Also the way it heats up is different than with 5900X. 5900X would report highest temperatures at light workloads (2-4 cores) when the voltage is highest. With all-cores workloads it will lower voltages, clocks, and stay relatively cool. 5800X3D on the other hand gets warmer the more cores you put to use. 

Edited November 24, 2022 by some1

[edmuss]

Mine starts to throttle above 76°C, only by 10-15mhz but by the time it's got to 90°C it's wound itself back to about 4ghz.

Obviously the cooler you keep it the more consistently it'll keep the boost clocks up. In DCS mine sits at 55-65°C.

[Dogmanbird]

As low as $529  $499 from Aus retailers from today. It's the lowest I've seen so far.

Edited November 25, 2022 by Dogmanbird

[falcon_120]

it is at 386€ today in Spain in a very known retailer. It is tempting.

Should i notice a good boost from a 5600x? VR user (Reverb g2, rtx 3090)

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[tomcat_driver]

29 minutes ago, falcon_120 said:

it is at 386€ today in Spain in a very known retailer. It is tempting.

Should i notice a good boost from a 5600x? VR user (Reverb g2, rtx 3090)

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If you can sell that 5600X, go for it. I never seen it so cheap...386€ for one of the best gaming chips is a bargain.

[falcon_120]

Is 5800x3d compatible with DDR4 2333 Mhz memory? I was going to order it but saw in the specification that compatible Ram is 2600 up to 3600mhz or something like that. Does that mean it will directly not work with my current RAM?

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[silverdevil]

10 minutes ago, falcon_120 said:

Is 5800x3d compatible with DDR4 2333 Mhz memory? I was going to order it but saw in the specification that compatible Ram is 2600 up to 3600mhz or something like that. Does that mean it will directly not work with my current RAM?

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unfortunately you would need all 4 DIMMS with the high speed. it may work but at a minimum you would be running the new ram at the old speeds. i generally do not like to have differing types.

[Dogmanbird]

On 11/25/2022 at 5:28 PM, falcon_120 said:

Should i notice a good boost from a 5600x? VR user (Reverb g2, rtx 3090)

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I'd say so considering I could see it coming from a 5900x, but depends on what you consider good  

3200 ram is fairly cheap now should you need to replace the existing ram. They come in different ras/cas timings but even the slowest would probably be okay

 

Edited November 27, 2022 by Dogmanbird

[tomcat_driver]

19 hours ago, falcon_120 said:

Is 5800x3d compatible with DDR4 2333 Mhz memory? I was going to order it but saw in the specification that compatible Ram is 2600 up to 3600mhz or something like that. Does that mean it will directly not work with my current RAM?

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Regardless of what chip you buy, you should definitely start thinking about upgrading those RAM first! xD

[Sandman1330]

As yesterday’s news shows we are probably still a year out from the multi core engine, and it sounds like it will still only use a small number of cores initially, I pulled the trigger on an X3D finally. Thankfully my local store must have just gotten a shipment because they had stock for the first time in awhile.

This should last me until the engine comes out next year, after which I’ll look at a new build.

Quite amazing, my current build started out in 2017(!) with a Ryzen 1700X and 1080ti. Now I’m going onto my third processor and already upgraded the card to a 6800 XT last year, all on the same original motherboard. Kudos to AMD for AM4’s longevity and upgradeability!

Edited December 3, 2022 by Sandman1330

[Zyll]

Wow, I went through almost the exact same upgrade path as you!

Asrock b350
Ryzen 1600X -> 3600 -> 5800x3d
GTX 1070ti -> 6900XT

if you haven't already, check for a bios update for your mobo prior to swapping chips, and be sure to turn on SAM (resizable bar).

Totally in love with the fact this mobo lasted so long, and was so cheap from the start.

Zyll @ TAW

[Sandman1330]

On 12/3/2022 at 8:06 AM, Zyll said:

Wow, I went through almost the exact same upgrade path as you!

Asrock b350
Ryzen 1600X -> 3600 -> 5800x3d
GTX 1070ti -> 6900XT

if you haven't already, check for a bios update for your mobo prior to swapping chips, and be sure to turn on SAM (resizable bar).

Totally in love with the fact this mobo lasted so long, and was so cheap from the start.

Zyll @ TAW
 

Sweet!

Just picked up the chip, will install tomorrow. I’m already on the latest BIOS, as it gave me resizable BAR on my 3900X too. Looking forward to smoothing out the stutters on the low end.

[Sandman1330]

Well I think I’m in the minority, but colour me disappointed.

I seem to have the opposite experience from others. Stepping up from my 3900X, I’m seeing a decent increase in frame rates, but the experience feels unchanged. Instead of micrstutters at 40fps, now I have microstutters at 60fps.

What I was most hoping to solve is a very stuttery / jittery view when looking sideways flying low level, especially in Syria. While my FPS number is definitely higher, it doesn’t feel any better. It still stutters and jitters.

I may look at returning the processor. I didn’t pay this much just to say I had a 30% increase in FPS. I want a better visual experience and I’m not seeing any difference there.

Edited December 6, 2022 by Sandman1330

[Mars Exulte]

5 hours ago, Sandman1330 said:

What I was most hoping to solve is a very stuttery / jittery view when looking sideways flying low level, especially in Syria. While my FPS number is definitely higher, it doesn’t feel any better. It still stutters and jitters.

That's OpenXR, afaik

[edmuss]

6 hours ago, Sandman1330 said:

Well I think I’m in the minority, but colour me disappointed.

I seem to have the opposite experience from others. Stepping up from my 3900X, I’m seeing a decent increase in frame rates, but the experience feels unchanged. Instead of micrstutters at 40fps, now I have microstutters at 60fps.

What I was most hoping to solve is a very stuttery / jittery view when looking sideways flying low level, especially in Syria. While my FPS number is definitely higher, it doesn’t feel any better. It still stutters and jitters.

I may look at returning the processor. I didn’t pay this much just to say I had a 30% increase in FPS. I want a better visual experience and I’m not seeing any difference there.

 

 

1 hour ago, Mars Exulte said:

That's OpenXR, afaik

That's not openxr, simply VR below refresh rate, nothing you can do about it.

If you want perfectly smooth without reprojection then you have to get your fps above the headset refresh rate. The is no other way about it.

The 5800x3D has lifted the framerates significantly but still not enough to beat refresh. You could shoot for setting the headset to 60hz and reduce some settings to keep your framerates above 60 or you could leave it at 90hz and embrace the stutter.

Note that at a locked framerate, the stutters can appear to be reduced, around 56fps is about as good as it gets from my testing. Adjust the framerate throttle in the toolkit whilst flying along and looking sideways and find the sweet spot for you.

[some1]

7 hours ago, Sandman1330 said:

What I was most hoping to solve is a very stuttery / jittery view when looking sideways flying low level, especially in Syria. While my FPS number is definitely higher, it doesn’t feel any better. It still stutters and jitters.

As explained above, it's a problem of the framerate not matching refresh rate, and can only be completely solved by reprojection or running the headset at full refresh rate. 

Now that your PC can consistently make more than 45 fps, you can first try with reprojection on. 

[Sandman1330]

Thx for the info all. I need to do some more testing now in heavy missions, I’ll probably be happier when I see the gains there.

I tried reproduction, but it was very wonky, and had a ton of artefacts. I need more testing there to see if I can get it looking half decent…

[Sandman1330]

I’m much happier now.

I still have a bad stutter issue on one specific multiplayer server, but I’m beginning to suspect it’s a scripting issue on their end. I can’t figure why it’s only an issue for me though. My FPS on that server is extremely low, I can’t figure out why.

As for the motion stutter, locking FPS at 45 using Radeon Chill was the ticket. This locks me at half refresh, which greatly smooths out the experience, even without reprojection. My old chip couldn’t maintain above that 45, but the 5800X3D is giving me 60, which put me right in the middle between refresh and half refresh. That’s why it didn’t feel smoother!

Edited December 12, 2022 by Sandman1330

[Supmua]

For new upgraders, try under undervolting with PBO2 Tuner for possible further performance gain plus temp reduction.