Upgrade from 12900k to amd 7950x3d or i9-14900k w 4090, vr?

[theskyisthelimit 48]

I currently have a 4090 + 12900k + 6400mhz ram.. I use this for VR primarily, still with a some stutters here and there with motion smoothing and the aero headset, though now with pimax crystal as well.

Im wondering if anyone made a jump 4090 held equal from 12900 to one of these cpu's.  I hear there could be some boost by going to the 7950x3D at least due to caching despite lower clock speeds (currently im at about 4.9 fixed). The 14900 is about 6ghz at most if it is able to hit that with those temps.  Its possible to also boost ram to around 7200 from 6400.  I tried before for days to get stable (with stress tests) at 5.1 and just couldnt do it without higher voltage and heat.. i now actually have it set to the box cooler mode in the msi bios, as water cooler setting wattage is too hot despite my 360 cooler.

Anyone done this and did VR performance change at all?  Probably not worth the fuss i'm guessing but if i could gain even 5 fps in VR overall that would be a boost.  I do some rendering that really needs those extra cores, like the 16/32 combo would be great for instance, so less interested in the amds that have fewer cores.

*i guess in some circles there is chatter about how the amd 3d cache doesnt always work right, so you sacrifice higher clock speeds for cache that doesnt always trigger and also memory stability issues with amd in some cases.  Then there is msfs 2024, will it have multi threaded ability, that might make things better in and of itself.

Thanks in advance

Edited November 10, 2023 by theskyisthelimit

[brucewtb 249]

9 hours ago, theskyisthelimit said:

*i guess in some circles there is chatter about how the amd 3d cache doesnt always work right, so you sacrifice higher clock speeds for cache that doesnt always trigger and also memory stability issues with amd in some cases.  Then there is msfs 2024, will it have multi threaded ability, that might make things better in and of itself.

Sorry I can't help you with VR but I was interested in this last para in that with all this talk about how marvelous the AMD x3D cpus are were there any gotchas as it all seems to good to be true and how might the advent of MS2024 affect CPU choice?

Bruce

[z06z33 763]

Looking at a benchmark the 14900k is better in MSFS at 1440p than the 7950XD not sure about VR

[theskyisthelimit 48]

Here in this video were some reasons why the x3d wasnt the best choice:

 

I think the best bet is to wait and see if MSFS 2024 offers multi threaded performance boosts or not, or for the 15th gens next year (intel).

 

 

[brucewtb 249]

On 11/11/2023 at 1:14 PM, theskyisthelimit said:

Here in this video were some reasons why the x3d wasnt the best choice:

 

I think the best bet is to wait and see if MSFS 2024 offers multi threaded performance boosts or not, or for the 15th gens next year (intel).

 

 

That is becoming my assessment as well.  FG has worked much better than I had expected on my 4090 and should give my 9900KF another 12 months of service as FPS rarely drop below 60 even at 4K.

Bruce

[Pilot2PC 25]

On 11/11/2023 at 2:33 AM, z06z33 said:

Looking at a benchmark the 14900k is better in MSFS at 1440p than the 7950XD not sure about VR

Which benchmark is that? If you have the link it would be very useful thanks

[ryanbatc 12,857]

But Frame Gen doesn't work in VR.

I think the 7800x3d would be faster than the 14900k even at 8k like when running Pimax.  It also would use less power and would run cooler.  From what I've read the 14900k is a power hungry chip.

Additionally, the x3D is on sale on amazon for 400 USD!  Nearly what I paid for my 12700K just two years ago....blah what a bad time to buy lol

Edited November 15, 2023 by ryanbatc

[jlohrenz 133]

If you have a 12900k now the most reasonable upgrade would be to the 14900k.  You don't need to do anything other than swap out the CPU.  If you switch to AMD that's a new motherboard too.  I'm on a 12900k now, not VR, but will be updating to a 14900k probably with some black friday deals.

[Silverbird 115]

On 11/15/2023 at 10:46 AM, jlohrenz said:

If you have a 12900k now the most reasonable upgrade would be to the 14900k.  You don't need to do anything other than swap out the CPU.  If you switch to AMD that's a new motherboard too.  I'm on a 12900k now, not VR, but will be updating to a 14900k probably with some black friday deals.

This is good option the kicker is that a new decent motherboard and the 78003d chip together are  about almost the same price as a brand new 14900k so I really believe is a hard choice depending on what other things you do besides mfs2020.

Edited November 18, 2023 by Silverbird

[TheFamilyMan 280]

The OP is looking at the 7950X3D, not the 7800X3D. Way different CPU that's considerably more expensive and has issues with gaming/sim uses as noted by the vid link above.   Given the OP's situation I'd go for the 14900.  

[regis9 4,014]

I guess the question is, why not the 7800X3D?  This point below is bang on:

On 11/18/2023 at 12:00 AM, Silverbird said:

This is good option the kicker is that a new decent motherboard and the 78003d chip together are  about almost the same price as a brand new 14900k so I really believe is a hard choice depending on what other things you do besides mfs2020.