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Resizable BAR BIOS B560 motherboards / Intel CPUs + Nvidia GPUs performance?

g67575

g67575

g67575

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Looked at several b560 motherboard support pages from various companies, but no sign of a resizable BAR update for any yet, to my knowledge.

Is this something still worth waiting for? Did Nvidia say if this would be coming to all LGA1200 / Zen 3 motherboards eventually?

There was a lot of fuss about this before VBIOSes were released by Nvidia, were we meant to assume it would only be available with high end / Z series motherboards only?

Seems poor, compared to native AMD support for this feature for the RDNA 2 GPUs.
 
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This is something I think has been missed in most Resize bar tests, they tend to focus on the average FPS, rather the minimum FPS (lowest 1%), which in my experience is better measure of gameplay performance.
According to this article, the minimum FPS improvements ranged between 4.1% (Watch Dogs: Legion) to 14.3% (Metro Exodus), when tested on a RTX 3060 at 1440p resolution. So a nice little boost for games which support it, hopefully for cards more powerful than the RTX 3060 too.

Article here:
https://www.game-debate.com/news/30338/rtx-3060-resize-bar-benchmarks-show-decent-fps-improvements

Too bad there's still no support for it yet for a lot of Intel motherboards. Maybe they are still trying to make the firmware stable for the masses?
 
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Nvidia listed the relevant chipsets and boards: https://www.nvidia.com/en-gb/geforce/news/geforce-rtx-30-series-resizable-bar-support/

However, its up to the mobo manufactures to get support in. There is also support for platforms and boards not on that list. X299 from some brands got an update as my own did, First Gen threadripper for others as as on ASrock side, I know most the brands released z370/z390 updates months ago. ASUS the biggest holdout for those platforms buckled in and confrimed support is coming end of the month / start of next month for z370 / z390. Apparently platforms including b360 would follow a few weeks after for ASUS: https://rog.asus.com/forum/showthread.php?121866-RESIZE-BAR-for-Z370-Z390-chipset/page38#post831311

So outside of the list Nvidia provided above which only covers the most recent chipsets, its pretty much manufactures discretion how much effort they will put into older platforms.

As for b560 you specifically mentioned, there is support, but its baked in from launch for most the makers. Gigabytes for example launch BIOS comes with the feature baked in https://www.gigabyte.com/WebPage/785/NVIDIA_resizable_bar.html
 
Watch Hardware Unboxed on this - AMD spent a lot of time making sure if it didnt work, it wasnt used, all `behind the scenes` to the user - whereas Nvidia have rushed it out and its very very buggy
 
Expect it will mature a bit, hopefully, but so far it seems a bit naff. Too many titles have no benefit or even performance regression.
 
g67575 said:
This is something I think has been missed in most Resize bar tests, they tend to focus on the average FPS, rather the minimum FPS (lowest 1%), which in my experience is better measure of gameplay performance.
According to this article, the minimum FPS improvements ranged between 4.1% (Watch Dogs: Legion) to 14.3% (Metro Exodus), when tested on a RTX 3060 at 1440p resolution. So a nice little boost for games which support it, hopefully for cards more powerful than the RTX 3060 too.

Article here:
https://www.game-debate.com/news/30338/rtx-3060-resize-bar-benchmarks-show-decent-fps-improvements

Too bad there's still no support for it yet for a lot of Intel motherboards. Maybe they are still trying to make the firmware stable for the masses?
Click to expand...

I doubt the masses will use it most people never update a bios
 
Just an update, after updating my BIOS to v1.60 (released today) via the 'Instant Flash' option within the BIOS, the '4G decoding' option is available. After enabling that, the resizable bar option can be enabled.

You need to convert your OS drive partition to GPT (from MBR) before the resizable bar can be enabled. This allows the CSM (compatibility support module) to be disabled (if you haven't already done this).

Warning - Make sure you write down all your BIOS settings like voltages and Fan profile settings, they were wiped on my ASRock board (not a problem as I recorded them).

In Windows, the NV control panel reports that 'Resizable BAR' is now enabled :)

For anyone with the ASRock B560m HDV, you can find the BIOS details here:
https://www.asrock.com/mb/Intel/B560M-HDV/index.asp#BIOS

Weirdly, it does not mention the Resizable Bar feature in the firmware description.
 
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Does anyone here actually use a B560 motherboard? There's definitely a few downsides to this board, like no PCI-E slots (apart from for the graphics card). And no CPU multiplier overclocking, but I don't require these features right now.
 
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I've turned resiable off now in my BIOS, as I'm not convinced there is a performance improvement (1% min fps) on Intel systems with Nvidia graphics cards. The review I saw below, was tested on an AMD system, with Nvidia GPU and shows a nice little performance boost:
https://www.game-debate.com/news/30338/rtx-3060-resize-bar-benchmarks-show-decent-fps-improvements

But, other reviews I've seen suggested lower 1% lows in most games (vs resizable bar off), on Intel + Nvidia systems, is this still the case?
 
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Yeah, the performance benefits look very marginal on Intel + Nvidia systems. Also, not many games seem to support it with Nvidia GPUs. There's a review below testing a 9900k + RTX 3080 at 1440p with Rebar on /off here:

https://babeltechreviews.com/z390-resizable-bar-performance/

Cyberpunk and Dust showed some small 1% low fps gains, other games showed a negligible performance difference (1-2 fps or less), or much lower 1% low fps in some cases.

Only a couple of reviewers seem to have bothered testing the feature with Intel CPUs.

It seems to generally be worth it on systems with an AMD CPU, particularly if combined with an AMD GPU. Nvidia's official results only showed performance with an AMD CPU.

For anyone with an RTX 3090, I doubt it matters much!
 
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Nvidia has gone pretty quiet about Resizable Bar performance on Intel CPUs, which is interesting, considering that Intel CPUs account for about 70% of all CPUs used by Steam users, as of June 2021. Link:
https://store.steampowered.com/hwsurvey/processormfg/

It seems like Nvidia only supported Resizable Bar to tick a box, and claim they are keeping up with AMD.

I think the the logic of many reviewers is questionable, since they only tested resizable Bar with AMD CPUs, or Intel CPUs only paired with AMD GPUs.
 
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g67575 said:
Nvidia has gone pretty quiet about Resizable Bar performance on Intel CPUs, which is interesting, considering that Intel CPUs account for about 70% of all CPUs used by Steam users, as of June 2021. Link:
https://store.steampowered.com/hwsurvey/processormfg/

It seems like Nvidia only supported Resizable Bar to tick a box, and claim they are keeping up with AMD.

I think the the logic of many reviewers is questionable, since they only tested resizable Bar with AMD CPUs, or Intel CPUs only paired with AMD GPUs.
Click to expand...

I use it myself and it would be good when they add more games to that outdated 6months old list of 15 games or so.
 
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