Nvidia Re-Size Bar/SAM support is live for some cards, more in March - 10% performance gains

[Grim5]

Nvidia Size Bar has been launched, the RTX3060 supports it today with the rest of the RTX3000 supporting it in March through new GPU VBIOS files to be released by board partners.

Nvidia claims they see up to 10% performance gains

To get re-size bar/SAM working you will need the following hardware:

* Nvidia RTX 3000 GPU
* AMD Ryzen 5000 CPU or Intel 10th gen/11th gen CPU
* B550/X570/Z490/Z590/H470/B460/H410 motherboard

Then to enable re-size bar, you will need to:

* Update RTX3000 GPU to the latest VBIOS in March
* Update motherboard to the latest BIOS
* Update graphics driver to the latest game ready driver
* That it's, now you can enjoy up to 10% free performance gains in your games

https://videocardz.com/press-releas...-amd-zen3-and-intel-10th-11th-gen-core-series

 

[Jay85]

Its available on Z390 boards as well, seen the bios update for my board but not updated yet.

 

[Dontrocktheboat]

That is some fine wine.

AMDs only advantage, gone. Wonder if RBAR will work better on 3090 with more MEM?

 

[varkanoid]

https://www.overclockers.co.uk/forums/posts/34586069
Already mentioned in the Nvidia Driver thread this afternoon bit slow.......

* That it's, now you can enjoy up to 10% free performance gains in your some games

https://www.nvidia.com/en-gb/geforce/news/geforce-rtx-30-series-resizable-bar-support/

In practice, the performance benefits of Resizable BAR can vary substantially from game to game. In our testing, we’ve found some titles benefit from a few percent, up to 10%. However, there are also titles that see a decrease in performance, so NVIDIA will be pre-testing titles and using game profiles to enable Resizable BAR only in games where it has a positive performance impact.
.....
GeForce RTX 30 Series Resizable BAR Supported Games
As of February 25th, 2021
Assassin's Creed Valhalla
Battlefield V
Borderlands 3
Forza Horizon 4
Gears 5
Metro Exodus
Red Dead Redemption 2
Watch Dogs: Legion

 

[shankly1985]

That is some fine wine.

AMDs only advantage, gone. Wonder if RBAR will work better on 3090 with more MEM?

Its was not a AMD feature its just they got their first.

 

[Radox-0]

Its available on Z390 boards as well, seen the bios update for my board but not updated yet.

yup some guys have it out for z390, hoping ASUS brings it to z390 also. Some nice gains on AMD side for some games I play with resizable bar so would be nice to see similar scaling,

 

[Dontrocktheboat]

Its was not a AMD feature its just they got their first.

No, never said it was, but AMD made it out, like it was.

 

[robfosters]

Why not Ryzen 3000 series CPU’s?

 

[Dontrocktheboat]

Why not Ryzen 3000 series CPU’s?

Answer is simple.

make people upgrade to ryzen 5000?

 

[robfosters]

Answer is simple.

make people upgrade to ryzen 5000?

And why would Nvidia care about that exactly?

 

[Dontrocktheboat]

And why would Nvidia care about that exactly?

Its a three way handshake for RBAR.

MOBO >>> CPU >>> GFX

You need all three to make it work.

If you are on ryzen 3000 you are missing the middle link, ie CPU. Thats AMDs job to get it working not NVIDIA.

Get it.

MOBO is manufacturer and the CHIPSET MAKER
GFX car is NVIDIA or AMD

 

[varkanoid]

Maybe you just needed to put

Answer is simple.

So AMD can make people upgrade to ryzen 5000?

And why would Nvidia care about that exactly?

They don't but you can still use AMD CPU 5xxx and Nvidia RTX 3xxx Card for Resize-BAR so Nvidia recommend the combinations.

I got what you meant anyway Drtb.

 

[heartburnron]

That is some fine wine.

AMDs only advantage, gone. Wonder if RBAR will work better on 3090 with more MEM?

Bit of a stretch that claim is it not? What about:

- heat / power draw
- 1080p and 1440p performance
- less attractive to miners

There's 3 advantages right there.

 

[no_1_dave]

My Z390 board supports it

MSI MPG Z390M Gaming Edge AC
Bios released on 17th Feb

https://www.msi.com/Motherboard/support/MPG-Z390M-GAMING-EDGE-AC

 

[OverDrive]

For info: This feature is also available to Radeon 5000 and 6000 series GPU users: https://www.amd.com/en/technologies/smart-access-memory

 

[robfosters]

Its a three way handshake for RBAR.

MOBO >>> CPU >>> GFX

You need all three to make it work.

If you are on ryzen 3000 you are missing the middle link, ie CPU. Thats AMDs job to get it working not NVIDIA.

Get it.

MOBO is manufacturer and the CHIPSET MAKER
GFX car is NVIDIA or AMD

Doesn’t really answer my question as to why Nvidia didn’t get it working on 3000 CPU’s.

 

[no_1_dave]

Doesn’t really answer my question as to why Nvidia didn’t get it working on 3000 CPU’s.

Yes it did, it's not up to Nvidia... If AMD do not support it in their motherboard chipset how can Nvidia get it to work?
You realise Nvidia don't make AMD CPUs right?

 

[turbot1984]

So is it better with GDDR6X VRAM?

 

[robfosters]

Yes it did, it's not up to Nvidia... If AMD do not support it in their motherboard chipset how can Nvidia get it to work?
You realise Nvidia don't make AMD CPUs right?

I read that RBAR was a different technology to SAM, and it would work on pretty much all CPU’s.

 

[Aretak]

Yes it did, it's not up to Nvidia... If AMD do not support it in their motherboard chipset how can Nvidia get it to work?
You realise Nvidia don't make AMD CPUs right?

You realise that 3000 and 5000 series Ryzen CPUs use the same chipsets, right? And suggesting that AMD have somehow locked it off for 3000 series chips is complete BS, because it works on AMD cards with Ryzen 3000.

https://overclock3d.net/reviews/gpu_displays/smart_access_memory_on_zen_2_cpus_-_the_power_of_resizable_bar/1

So yes, if it doesn't work with Nvidia cards and Ryzen 3000 then it's 100% an Nvidia thing. At least do the most basic of research before attributing blame and fanboying for Jensen & Friends.