[SOLVED] Resizable bar support for B450 motherboards


Aug 12, 2020
Hi there,

I just noticed that my MSI B450 TOMAHAWK MAX motherboard has now a BIOS update which provides resizable bar function( https://www.msi.com/Motherboard/support/B450-TOMAHAWK-MAX). I know it provides a performance boost to the graphics cards by allowing the processor to direct access the VRAM. But AMD hasn't provided officially to b450 chipsets and older processors(I have Ryzen 3 3100). Should I update my BIOS to gain that little performance boost? Also I'm currently using a much older GTX 750 TI 2GB graphics card and waiting for new budget GPUs to come. I'm afraid that updating the BIOS and enabling this feature might break something.

Let me know your thoughts.

Yes.. I don't mind updating the BIOS but this feature is new and I think its best to wait till few BIOS updates so it gets more stable.
I would only update the BIOS if I was pretty sure it was going to get me something and also pretty sure that it wasn't going to cause me problems....and in your case...I just don't see it being worth the risk.


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