Has anyone here tried the Resizable BAR feature on Intel boards yet?

15th Warlock · Jan 15, 2021

Hi everyone, just flashed my Z490 motherboard to the latest BIOS with support for Resizable BAR for video cards of any brand.

Before I try the feature, just wanted to ask if anyone else has dabbled with it, and what setting do you think offers the best performance gains?

Hope you guys can offer some input on this, does it really offer any improvement, and what, if any, are the risks in enabling this feature?

Thanks for any help!

Edit: After some research, it seems for my card in particular, the feature has to be enabled at the driver level, and Nvidia hasn't released a driver that supports it yet, it's supposed to be released in February... Oh well, will have to wait for that to see if the feature makes any difference in performance.

weekendgeek · Jan 15, 2021

I did last Saturday. I've only tested one game so far (one of the higher gains as claimed by AMD).

Assassin's Creed: Valhalla
Settings: 1440p - Highest with Motion Blur off and AA set to low. (because that's how I play)

Before:

After:

15th Warlock · Jan 15, 2021

weekendgeek said:
I did last Saturday. I've only tested one game so far (one of the higher gains as claimed by AMD).

Assassin's Creed: Valhalla
Settings: 1440p - Highest with Motion Blur off and AA set to low. (because that's how I play)

Before:

View attachment 184149

After:

View attachment 184150

That's awesome! Nice uplift, thank you very much for the update!

How much did your set the BAR size to, if I may ask?

weekendgeek · Jan 16, 2021

15th Warlock said:
That's awesome! Nice uplift, thank you very much for the update!

How much did your set the BAR size to, if I may ask?

You're welcome!

My board didn't have any options for size. I had to enable "Above 4G Decoding" which then presented the option for the Resizable BAR support. My choices were "Disabled" or "Auto".

Adc7dTPU · Jan 16, 2021

So 99 avg fps increases to 112 with just a bios setting! Interesting indeed!

weekendgeek said:
(one of the higher gains as claimed by AMD)

If not for them, we wouldn't know something like Base Address Register even existed, that's for sure.

jlewis02 · Jan 16, 2021

That's a nice gain.
I'm waiting for Nvidia to release it in February

weekendgeek · Jan 16, 2021

It's going to be highly game dependent. I've since tested Shadow of the Tomb Raider and only saw 1-3 fps improvement.

But, yeah, this was a nice surprise having the function brought to Z490. :rockout:

15th Warlock · Jan 17, 2021

weekendgeek said:
You're welcome!

My board didn't have any options for size. I had to enable "Above 4G Decoding" which then presented the option for the Resizable BAR support. My choices were "Disabled" or "Auto".

Same with my motherboard, I thought there would be an option for size, but all I get is "auto".

Can't wait for Nvidia to enable it on their drivers thanks again for sharing!

Processor	Intel Core i9 10850KA @ 5.4GHz 1.4V
Motherboard	Asus Strix Z490 Maximus XII Hero
Cooling	Corsair Master Liquid ML360 Mirror
Memory	2x16GBs G.Skill Trident Z Neo Series CL16 3600MHz
Video Card(s)	Nvidia RTX 3090 FE
Storage	1TB Crucial P5 NVMe - 8TBs WD Black
Display(s)	Sony 75" 4K HDR TV - Samsung Odyssey VR
Case	Corsair Graphite Black 760T
Audio Device(s)	Sony STR-DN1080 - 7.2 Klipsch Dolby ATMOS Speaker Setup - HyperX Cloud Flight S
Power Supply	EVGA Supernova G2 1300W
Keyboard	Logitech K830 wireless keyboard/trackpad
Software	Windows 10 Pro 64bit

Processor	10850k
Motherboard	Gigabyte Z490
Cooling	Noctua 12 something with a 2nd fan
Memory	32GB 3733Mhz C19
Video Card(s)	RX 6800
Storage	SSDs and spinning rust
Display(s)	32" 165Hz 1440p
Case	Antec P101 Silent
Audio Device(s)	Schiit DAC, various amps and headphones
Power Supply	EVGA 750w
Mouse	Razer stupid RGB wireless
Keyboard	Corsair clicky thing

Processor	Intel Core i9 10850KA @ 5.4GHz 1.4V
Motherboard	Asus Strix Z490 Maximus XII Hero
Cooling	Corsair Master Liquid ML360 Mirror
Memory	2x16GBs G.Skill Trident Z Neo Series CL16 3600MHz
Video Card(s)	Nvidia RTX 3090 FE
Storage	1TB Crucial P5 NVMe - 8TBs WD Black
Display(s)	Sony 75" 4K HDR TV - Samsung Odyssey VR
Case	Corsair Graphite Black 760T
Audio Device(s)	Sony STR-DN1080 - 7.2 Klipsch Dolby ATMOS Speaker Setup - HyperX Cloud Flight S
Power Supply	EVGA Supernova G2 1300W
Keyboard	Logitech K830 wireless keyboard/trackpad
Software	Windows 10 Pro 64bit

Processor	10850k
Motherboard	Gigabyte Z490
Cooling	Noctua 12 something with a 2nd fan
Memory	32GB 3733Mhz C19
Video Card(s)	RX 6800
Storage	SSDs and spinning rust
Display(s)	32" 165Hz 1440p
Case	Antec P101 Silent
Audio Device(s)	Schiit DAC, various amps and headphones
Power Supply	EVGA 750w
Mouse	Razer stupid RGB wireless
Keyboard	Corsair clicky thing

System Name	Old friend
Processor	3550 Ivy Bridge
Memory	2x8GB Ripjaws
Video Card(s)	970 Maxwell

Processor	i9 10850k
Motherboard	Asus strix Z-490-e
Cooling	Noctua NH-D-15
Memory	G.SKILL Trident Z 4000mhz
Video Card(s)	Asus STRIX RTX 3080
Storage	1tb Samsung 970 EVO,1tb hdd,750gb hdd
Display(s)	Asus 27" 144htz 1440
Case	Lian Li lancool 2 mesh
Audio Device(s)	Onboard
Power Supply	Seasonic GX-850
Mouse	Logitech G502 Hero
Keyboard	Dell
Software	10 Home 64bit