Wednesday, January 13th 2021

MSI Brings Resizable-BAR to Intel 300-series and AMD 400-series Motherboards

MSI announced that it is bringing the PCI-SIG resizable base-address register (resizable BAR) support to a variety of older PC platforms, and not just the latest Intel 400-series and AMD 500-series. Among these are Intel 300-series, AMD 400-series, and AMD TRX40. This should come as a boon to those with 8th Gen and 9th Gen Core "Coffeee Lake" processors, such as the i9-9900K and i5-8400. Support is also being added to AMD X470 and AMD B450 chipset motherboards, however, this requires a compatible processor, and the latest beta UEFI firmware that supports them. Lastly, resizable-BAR support is making its way to the AMD TRX40 chipset (Socket sTRX4) Threadripper platform.

Resizable BAR is a feature that allows a processor to see the entire video memory of a discrete GPU as a single addressable block, rather than through 256 MB apertures. This has the potential to tangibly improve performance with certain games. Currently, AMD's Radeon RX 6000 series "Big Navi" GPUs; and NVIDIA's GeForce RTX 30-series "Ampere" GPUs support it. MSI is releasing UEFI firmware updates that add resizable-BAR support. Keep checking the "support" section of your motherboard's product page on the MSI website.
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12 Comments on MSI Brings Resizable-BAR to Intel 300-series and AMD 400-series Motherboards

#1
Firedrops
Meanwhile in Asusland: x370 Crosshair VI Hero? The flagship motherboard AMD used in all Zen launch promo? Literally the exact same motherboard as the x470? What? Never heard of it. Please buy our B550.

Now we know which company to avoid when AM5 hits.
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#2
dicktracy
8700k continues to age like fine wine all the way until DDR5 and PCIe 5.0 comes out. Thank you Intel.
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#3
ZoneDymo
dicktracy
8700k continues to age like fine wine all the way until DDR5 and PCIe 5.0 comes out. Thank you Intel.
everything as far back as the 2600k ages like fine wine tbh, but that has more to do with Intel being lazy and AMD not providing competition for a long time soooo yeah not all great.
and also how is this something to thank Intel for? AMD pushed out SAM which just is resizable BAR which was PCI spec....and now MSI and other motherboard makers are adding it do their product....I fail to see where Intel deserves any credit at all.
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#4
HD64G
Nice! There are videos already with benchmarked games that gain from SAM on PCs with Zen2 CPUs and Big Navi GPUs. I think someone needs to test it with Zen2 and Navi10. I would do that but my CPU is Zen+.
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#5
sepheronx
Good. I plan to get at least a 3060ti or 3070 and my MSI z490 and 10500 should suffice for quite a few years.
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#6
droopyRO
sepheronx
Good. I plan to get at least a 3060ti or 3070 and my MSI z490 and 10500 should suffice for quite a few years.
In a few years you will find a 3060 Ti or 3070 to buy :)
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#7
sepheronx
droopyRO
In a few years you will find a 3060 Ti or 3070 to buy :)
Probably.

Local company here, memoryexpress, offers in store back orders. So I can place an in-store pre order for a 3070 for about $730 CAD (which is expensive but our dollar did depreciate a lot so it's expected).

When I will get it though? Probably when the moon is in the seventh house and Jupiter aligns with mars.
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#8
Figus
MSI B450 Gaming Plus Max got BAR from december
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#9
kapone32
I have had BAR working with my X570 Pro and 5700. I only wish they would release one for X399. I would be interested to see how HBM works with BAR on my Vega 64.
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#12
B-Real
dicktracy
8700k continues to age like fine wine all the way until DDR5 and PCIe 5.0 comes out. Thank you Intel.
LOL
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