On 4/8/2021 at 2:19 AM, hanhamreds said:

Running an ASUS TUF 3090, I never OC for MSFS, don't see the point as my card rarely if ever hits 100% 

 

I'm running a tired old 2070 Super and rarely do I get near 100% GPU utilization, and that is with nearly everything at Ultra.  A 3090 is just the wrong card for my needs but unfortunately there isn't anything between it and a 3080 at this time, so if I found one at retail I'd probably go for it, otherwise I have ample power to get to the next iteration of nV cards..

16 hours ago, harpsi said:

But do we need to change voltage or just for overclocking which seems not needed at all?

You are changing the voltage by lowering it for a given clock speed. I recommend reading the post I linked thoroughly. The screenshots below show how this works on my system: Stock runs 1995 MHz @ 1093 mV. Undervolted is 1995 MHz @ 975 mV. Your values will be different, my system is in a compact case with quiet cooling which lowers the max clock available by default.

On 4/7/2021 at 7:15 PM, Virtual-Chris said:

It depends what resolution you want to run and what frame rate. 

I’m seeking 60FPS at 4K. And I’ve largely achieved that when MSFS is having a good day.

If you want 1440p at 30FPS, that’s a much different story. 

What are you trying to achieve?

What settings are you using to achieve 60FPS at 4k?  Do you have many addons?

On 4/7/2021 at 7:41 AM, Tork_Curve said:

Agreed - I don't overclock. You can either run full 4k with some graphical tweaks and hit 60fps, or - like I do, have all the GFX options/render/resolution turned up to the max and lock it at 30fps with lots of headroom for busy areas...

I have 3090...how do you make these tweaks?

Edited April 10, 20215 yr by knich

this under volt thing  is nothing for you guys that want have headroom , what this do if you run 30fps locked its nada difference in powerdraw when not at full load, but when you really need it the boost clock down limited by voltage.

i have test diff senarios under volting to 0.93v 0.95v and std 1.083v and 2040mhz boost, and 2130mhz std voltage  then 2205mhz 1.19v

run TimeSpy the gpu test2 is very hard in the end there you have the max powerdraw. 314w, 321w, 404w, 413w, 506w.

as i see it its the same risks as you oc with std voltage undervolting you try to hold the same boost with lover voltage and OC with std voltage you try to raise the boost with same voltage.

nvidia have a safe boost for a given voltage you can move down to voltage keep boost or keep voltage and move up the boost. basic the same thing you get closer to the limits in booth cases.

MSFS load with 2130mhz std 1.083v approx 290w up to 340w peak with the AS CRJ i run 30fps locked. can get up to 100% gpu load with the 3090 at 30fps

i dont recomend to undervolt the gpu its safest to keep it as it is, only reason is if you have very bad cooling botth gpu and PC case.

Edited April 10, 20215 yr by westman

My 3090 has two bioses, Performance and Silent. 

I'm running on the Silent bios. There's no need to overclock a 3090 for MSFS. In low density areas your FPS will be through the ceiling. In urban and complex areas you'll be bound by CPU. 

On 4/10/2021 at 1:35 PM, westman said:

i dont recomend to undervolt the gpu its safest to keep it as it is, only reason is if you have very bad cooling botth gpu and PC case.

There is never any risk of damage by undervolting, just risk of crashes or artifacts if you go too low. I play lots of games and undervolting has made a nice difference to temps and fan speeds. There are benchmarks in the post I linked that show the advantage in other games. If you use your 3090 for only MSFS, then yes, it may be a waste of time finding a stable undervolt.

On 4/10/2021 at 7:17 AM, knich said:

What settings are you using to achieve 60FPS at 4k?  Do you have many addons?

I only add a couple of scenery additions for any area that I fly... and am sure to avoid anything using Goggle data which kills performance.

I recently updated to a 5800x CPU that helped.  Playing with settings so that most scenery rendering is on ultra while other elements are high or medium.  Draw distance and LOD are most important to me.  And it should go without saying that you can't have any pop-out windows undocked from the main display window as that kills FPS.

On 4/10/2021 at 11:35 AM, westman said:

can get up to 100% gpu load with the 3090 at 30fps

I give, how so?  I have a lowly 2070 Super and all settings at Ultra except when in places like London where I go down to mostly high but w/ 200 LOD and 16xAF and 8xSSAA.  I rarely see 100% GPU load, and when I do I first dial back volumetric clouds to high from ultra and that usually gets me down into the 60-90% load.

2 hours ago, Noel said:

I give, how so?  I have a lowly 2070 Super and all settings at Ultra except when in places like London where I go down to mostly high but w/ 200 LOD and 16xAF and 8xSSAA.  I rarely see 100% GPU load, and when I do I first dial back volumetric clouds to high from ultra and that usually gets me down into the 60-90% load.

Reduce your LOD for starters so that you’re not cpu bound. Up your render scale. There are loads of ways to become gpu bound. 

Edited April 12, 20215 yr by Ianrivaldosmith

2 hours ago, Noel said:

I give, how so?  I have a lowly 2070 Super and all settings at Ultra except when in places like London where I go down to mostly high but w/ 200 LOD and 16xAF and 8xSSAA.  I rarely see 100% GPU load, and when I do I first dial back volumetric clouds to high from ultra and that usually gets me down into the 60-90% load.

it must be your lowly 2070 super

Well it's disappointing that w/ a 3090 locked at 30fps it's still hitting a GPU wall, and very surprised at that.

i dont get you Noel, a 2070Super performs in pair with a 1080ti i have one 1080ti 8700k in  a second gaming  pc 2080ti 9900k and the amd 5950x 3090 ,

all with steam with msfs on 4k monitors , when testing with same settings in msfs a go from a slideshow to buttersmooth experiance.

i dont like YT vids but this one show game tests with 1080ti 2070super and 3090

 

On 4/11/2021 at 11:55 PM, Funky D said:

There is never any risk of damage by undervolting, just risk of crashes or artifacts if you go too low. I play lots of games and undervolting has made a nice difference to temps and fan speeds. There are benchmarks in the post I linked that show the advantage in other games. If you use your 3090 for only MSFS, then yes, it may be a waste of time finding a stable undervolt.

read hardforum undervolting tread, is not clear they now , how the temp boost table looks like or work.
the boost table is 10 steps 15mhz total 150 mhz over std bios frq , ex nvidia FE 1695mhz give 1845mhz max boost. a evga with 1800mhz bios max boost 1950mhz thats clear.
then we have the 10 step temp curve or what they call it it start with less then 27c on gpu you get a 150mhz boost that table is 15mhz steps and approx 6-6.5 C each step, from 91c down to less then 27c.
this is with the critera that you not trigg another feature like powertarge,t idle ( less then 50% gpu load), voltage, memtemp etc.

undervolting they adjust only the core but you have lot of hide settings NVVDD (corevoltage), MSVDD, switch frq, load line calibation ex the MSVDD is default 0.937v and its for stability of the boost clock behavor in a easy explination.

did a test with std Nvidia 1695mhz clock  with a 3 step downclock ( gpu temp betwen 32.5-38c ) gpu load 100% then set my std bios 1905mhz 210mhz OC over STD Nvida frq gpu load 93% and last a 360mhz OC gpu load 91% .
the MSFS settings the same and with locked 30fps that clerly show that you get more headroom for a peak with OC even in MSFS .

std Nvidia FE 1695.  std Galax Hof OCLab  1905   Galax OC +150 2055

EDIT. i not say you shall OC but keep in mind that lot of vendors like EVGA ,ASUS selling cards with differnt default FRQ from 1695mhz up to 1920mhz and powertargets they all behave the same in MSFS , higher base frq more headroom 

Edited April 13, 20215 yr by westman

11 hours ago, Noel said:

Well it's disappointing that w/ a 3090 locked at 30fps it's still hitting a GPU wall, and very surprised at that.

Why are you locking to 30 FPS when using a 3090? Let the thing run free, you'll get better frame pacing that way too. Make sure it stays GPU bound. It has to be either GPU or CPU bound and you would much rather it was GPU bound. I have zero issues here (Other than the know bugs, limitations), using a 3090 paired with a i9900KS 5GHZ.