https://community.intel.com/t5/Graphics/Intel-Arc-B580-Limited-Edition-Resizable-BAR/m-p/1753285#M152532 <P>Hello,</P><P>I'm experiencing a problem with my Intel Arc B580 Limited Edition motherboard.</P><P>I have a Biostar H410MH motherboard and an Intel i3 10100 processor. With these components and the B580 motherboard, the Resizable Bar is not working. I have enabled all the necessary BIOS settings, including: Resizable Bar: Enabled, Windows installed on GPT disk, Decoding over 4G: Enabled, CSM: Disabled, UEFI boot mode.</P><P>Importantly, when I install my old RX550 graphics card, it appears to be enabled. However, as soon as I replace it with the Intel Arc B580 Limited Edition, the Resizable Bar appears disabled again.</P><P>Things I've tried: I updated the motherboard BIOS to the latest version. I installed the latest Intel graphics driver. I verified all BIOS settings multiple times. I reinstalled the graphics driver.</P><P>Since my previous graphics card supported the Resizable BAR feature on the same system, I suspect the problem might be related to the Arc B580 or a compatibility issue.</P><P>Has anyone experienced the same problem with their Intel Arc B580 Limited Edition? Could this indicate a hardware issue?</P> Tue, 07 Jul 2026 12:08:42 GMT huksuk 2026-07-07T12:08:42Z https://community.intel.com/t5/Graphics/Intel-Arc-B580-Limited-Edition-Resizable-BAR/m-p/1753285#M152532 <P>Hello,</P><P>I'm experiencing a problem with my Intel Arc B580 Limited Edition motherboard.</P><P>I have a Biostar H410MH motherboard and an Intel i3 10100 processor. With these components and the B580 motherboard, the Resizable Bar is not working. I have enabled all the necessary BIOS settings, including: Resizable Bar: Enabled, Windows installed on GPT disk, Decoding over 4G: Enabled, CSM: Disabled, UEFI boot mode.</P><P>Importantly, when I install my old RX550 graphics card, it appears to be enabled. However, as soon as I replace it with the Intel Arc B580 Limited Edition, the Resizable Bar appears disabled again.</P><P>Things I've tried: I updated the motherboard BIOS to the latest version. I installed the latest Intel graphics driver. I verified all BIOS settings multiple times. I reinstalled the graphics driver.</P><P>Since my previous graphics card supported the Resizable BAR feature on the same system, I suspect the problem might be related to the Arc B580 or a compatibility issue.</P><P>Has anyone experienced the same problem with their Intel Arc B580 Limited Edition? Could this indicate a hardware issue?</P> Tue, 07 Jul 2026 12:08:42 GMT https://community.intel.com/t5/Graphics/Intel-Arc-B580-Limited-Edition-Resizable-BAR/m-p/1753285#M152532 huksuk 2026-07-07T12:08:42Z