News Nvidia GPU owners may be losing performance because of a simple setting that's disabled by default — enabling Resizable Bar with Profile Inspector...

[Admin]

YouTuber JayzTwoCents discovered that manually enabling ReBAR in 3DMark can provide a 10% boost in performance, particularly on Intel Raptor Lake-based machines.

Nvidia GPU owners may be losing performance because of a simple setting that's disabled by default — enabling Resizable Bar with Profile Inspector... : Read more

 

[BTM18]

Its left off by default for a reason.
FAFO

 

[aberkae]

Its left off by default for a reason.
FAFO

Community should make a white list check list for both AMD and Intel platforms. From the comments on that video it seems that it can be disabled for for AMD and Intel. Nvidia is hyperfocused on ai. Gaming is an afterthought.

 

[YSCCC]

But actually it depends on what game and GPU you have.
Right now due to MSFS 2024 with some nicer addon, even at 1080p the game will instantly load up to 13-14Gb of VRam, once Rebar is enabled it instantly gets stutter hell, I have a 9070XT for 1080p and it goes like 50fps for high quality addon and airport, with re bar... 15-25fps..

 

[leclod]

I just tried on my 3070 and Port Royal, no improvement so far...

 

[ZGUY85]

Article doesn't mention that a man named Allen or "Splave" who owns an SI company discovered this and not Jay, which Jay himself gives credit to in his video.

 

[rambo919]

But actually it depends on what game and GPU you have.
Right now due to MSFS 2024 with some nicer addon, even at 1080p the game will instantly load up to 13-14Gb of VRam, once Rebar is enabled it instantly gets stutter hell, I have a 9070XT for 1080p and it goes like 50fps for high quality addon and airport, with re bar... 15-25fps..

So the ACTUAL reason for rebar is optimizing games for high VRAM GPU's? Why does no one just say that?

EDIT: this actually might be a good explanation for recent reviewer benchmark problems regarding VRAM.... maybe the problem games on low VRAM GPU's are because rebar is enabled?

 

[Alvar "Miles" Udell]

Woo, 3DMark, that's such a great game! And the results have been repeated and confirmed by TomsHardware so this doesn't appear to just be a paid publicity piece for someone on Youtube!

Oh wait, it's not. And oh, it hasn't...

 

[Gururu]

So what does this mean for gaming benchmarks pitting AMD vs. Intel cpus running 5090s?

 

[YSCCC]

So the ACTUAL reason for rebar is optimizing games for high VRAM GPU's? Why does no one just say that?

EDIT: this actually might be a good explanation for recent reviewer benchmark problems regarding VRAM.... maybe the problem games on low VRAM GPU's are because rebar is enabled?

No, enabling Re-bar, given the game use considerably less VRam than the GPU have, you can have the CPU utilizing the much faster VRam than the slow DDR4/5, so add some 10% performance, but when the game itself uses so much VRam, the Rebar having the CPU occupying the Vram will starve the GPU, and created the stutter hell...

Sadly for Flight simming, the base game is running lightening fast with Rebar, but those high realism aircraft, very detailed airport modelling including some random guys moving around the airport will eat up so much Vram by default, Rebar is only usable in 1440p with 24GB+ cards

 

[rambo919]

No, enabling Re-bar, given the game use considerably less VRam than the GPU have, you can have the CPU utilizing the much faster VRam than the slow DDR4/5, so add some 10% performance, but when the game itself uses so much VRam, the Rebar having the CPU occupying the Vram will starve the GPU, and created the stutter hell...

Sadly for Flight simming, the base game is running lightening fast with Rebar, but those high realism aircraft, very detailed airport modelling including some random guys moving around the airport will eat up so much Vram by default, Rebar is only usable in 1440p with 24GB+ cards

I practice that just gets confusing....

 

[Phaaze88]

Jay leapt before looking...
It's game dependent. Forcing it always on will backfire in some cases, of which no one will want to go toggle it on/off depending on what they're playing.

Also, 3D Mark is definitely a good representation of how all game engines behave... /s

 

[HardwiredWireless]

Woo, 3DMark, that's such a great game! And the results have been repeated and confirmed by TomsHardware so this doesn't appear to just be a paid publicity piece for someone on Youtube!

Oh wait, it's not. And oh, it hasn't...

I didn't think it was possible to read something and miss the point so completely. I am impressed.

 

[HardwiredWireless]

Jay leapt before looking...
It's game dependent. Forcing it always on will backfire in some cases, of which no one will want to go toggle it on/off depending on what they're playing.

Also, 3D Mark is definitely a good representation of how all game engines behave... /s

That's why you rest and set the per game profile to use rebar or not, so you don't have to do it manually each time. It seems like s something the game optimize should be doing automatically and it does for the games that handed been tested but there are a lot of games and it will take some time.

 

[JayGau]

That's not what jaytwocents said. He literally said it was a bug in Nvidia driver that disables rebar although it's enabled in the BIOS. He was mocking Nvidia like they were so dumb for doing that. Another youtube video filled with ignorance and misinformation.

Rebar is disabled globally by default and enabled only when the game benefits from it since plenty of games don't work well at all with it. This is a well known feature that anyone who messed up with rebar in the last couple of years is aware of. The problem with jaytwocents is that he is not a gamer (he pretends to be one for his ads but he doesn't game), so he doesn't know those things.

Now plenty of people who watch this video will enable rebar globally and then come on forums like this one to seek help because their games keep stuttering and crashing. And Tom's Hardware is spreading it.

 

[umeng2002_2]

Its left off by default for a reason.
FAFO

FAFO what? It's not going to make your computer explode. It would only cause a performance degradation.

 

[rluker5]

So Intel definitely needs REBAR. AMD notably benefits from it. And Nvidia gets improvement in some games but supposedly not others.

I don't see an issue with checking out Jay2s fix on a per game basis. It could help in many scenarios and be a waste of time in the same or more. But if you change a setting and performance immediately gets worse, then it is probably that setting that is the issue and maybe it should be changed back.

 

[rluker5]

That proposed community whitelist should also include hardware. It might be more of a boon or bust with low vram cards and with people with slow storage, or relatively underpowered CPUs.

 

[Phaaze88]

That's why you rest and set the per game profile to use rebar or not, so you don't have to do it manually each time.

On a per game basis? This is something the general user, aka, the vast majority, are just going to give up on, due to lack of convenience.

It seems like s something the game optimize should be doing automatically and it does for the games that handed been tested but there are a lot of games and it will take some time.

Rebar is disabled globally by default and enabled only when the game benefits from it since plenty of games don't work well at all with it. This is a well known feature that anyone who messed up with rebar in the last couple of years is aware of. The problem with jaytwocents is that he is not a gamer (he pretends to be one for his ads but he doesn't game), so he doesn't know those things.

Yeah, that. ^

 

[Udyr]

"Huge"...

...10%.

Looks like clickbait material.

 

[YSCCC]

I practice that just gets confusing....

I try simplify the description:

1) Re-bar let CPU use more of the faster GPU Vram for processing needs
2) When Vram have enough spare left idle by the GPU, it could benefit the overall FPS by essentially letting CPU have much faster ram in operation
3) Since it eats up Vram, say, in my situation in flight sim, around 1-2GB is used by the CPU when Re-bar is enabled, in sceneries where the GPU itself need a ton of 4k/8k texture to be stored in Vram (the airport details, distant cityscape, internal texture of the aircraft etc.) the 16GB in my 9070XT gets too low to handle all that, ended up displacing some of the work to the system ram, which is much slower, and hence, lower FPS

 

[thestryker]

The whitelist solution in use by nvidia has been half baked from the start. I've had it globally enabled, but will also create profiles for games that don't benefit. For general users it's still probably best to leave it alone though because the issues it can cause are generally worse than the benefits it has.

I think the real question regarding the situation here with 3DMark is why was it fine with the 9800X3D, but not with the 14900KS. It makes me wonder if there's more to the whitelist than just a generic on/off depending on program.

 

[BizSAR]

Article doesn't mention that a man named Allen or "Splave" who owns an SI company discovered this and not Jay, which Jay himself gives credit to in his video.

He actually does give credit to Allen or "Splave" in the video.

 

[rambo919]

I try simplify the description:

1) Re-bar let CPU use more of the faster GPU Vram for processing needs
2) When Vram have enough spare left idle by the GPU, it could benefit the overall FPS by essentially letting CPU have much faster ram in operation
3) Since it eats up Vram, say, in my situation in flight sim, around 1-2GB is used by the CPU when Re-bar is enabled, in sceneries where the GPU itself need a ton of 4k/8k texture to be stored in Vram (the airport details, distant cityscape, internal texture of the aircraft etc.) the 16GB in my 9070XT gets too low to handle all that, ended up displacing some of the work to the system ram, which is much slower, and hence, lower FPS

The result being it might help and it might not and you have to test to find out..... really seems like something that should be toggled ingame and not on driver or bios level.