Resizable BAR Tested with Intel - The Power of Boosted Memory Access

Enabling Resizable BAR Support

Resizable BAR Tested with Intel - The Power of Boosted Memory Access

Enabling Resizable BAR Support

To enable Resizable BAR with our Intel i9-10850K and our Z490 Aorus PRO AX motherboard, we first updated our BIOS to Gigabyte's latest version (F20a for this article). After that, we navigated to the Settings section of Gigabyte's UEFI and then enabled "Above 4G Decoding". Enabling this makes the Z490 Aorus PRO AX's Resizable BAR option reveal itself. 

Resizable BAR Tested with Intel - The Power of Boosted Memory Access  
Once "Above 4G Decoding" is enabled, an option called Re-Size BAR Support will become available. Set this option to auto, and this will allow the feature to work on compatible graphics hardware. 

Note that Resizable BAR support will only work if your motherboard, graphics card and GPU drivers all support Resizable BAR. 


Resizable BAR Tested with Intel - The Power of Boosted Memory Access  
Resizable BAR Tested with Intel - The Power of Boosted Memory Access  

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Most Recent Comments

30-01-2021, 18:04:21

NeverBackDown
Pretty impressive to say the least. Almost like DLSS magic where a click of a switch and boom instant fps increase, not to the same extent but still impressive. It'll be interesting to see how much impact alongside DLSS this would have. Would it be another similar magical boost? If so Nvidia will really be hammering AMD even more.Quote

30-01-2021, 22:15:27

FTLN
Bring on the RTX Bios's with this feature enabled, not sure why Nvidia is taking so long, it seems the driver is already prepped.....

https://i.imgur.com/xC8nCuW.pngQuote

30-01-2021, 22:47:55

WYP
Quote:
Originally Posted by FTLN View Post
Bring on the RTX Bios's with this feature enabled, not sure why Nvidia is taking so long, it seems the driver is already prepped.....

https://i.imgur.com/xC8nCuW.png
Driver enablement isn't supposed to be coming until the release of the RTX 3060. Nice to see that there is a way to confirm it is working on Nvidia hardware. With AMD you kinda need to trust that it's working...

Nvidia needs to do a lot of validation before it goes public. They need to make sure that enabling this does not add new bugs or degrade performance in some instances.Quote

31-01-2021, 12:12:21

looz
Yeah I heard that AMD disables Resizable BAR on driver level for many titles, since it can lead to issues.Quote

01-02-2021, 08:42:59

Peace
Quote:
Originally Posted by looz View Post
Yeah I heard that AMD disables Resizable BAR on driver level for many titles, since it can lead to issues.
Guess we'll have to see how it looks with Nvidia then, because if this doesn't create any negative issues, it's an absolute nobrainer.
Let's just hope that motherboard manufacturers don't lock this for the cheaper models...Quote
Reply
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