https://community.intel.com/t5/Graphics/Arc-Pro-B70-card-permanently-downgraded-from-PCIe-Gen5-x16-to/m-p/1746622#M151341 <P>While trying further to figure out what was going on - I stumbled upon: "xpu-smi config" which displays a "PCIe Gen4 Downgrade" option - which was enabled. &nbsp;I disabled this option - and PCIe Gen5 is back!</P><P>Hope this helps someone!</P><P>&nbsp;</P> Mon, 04 May 2026 01:50:59 GMT mwaustin 2026-05-04T01:50:59Z https://community.intel.com/t5/Graphics/Arc-Pro-B70-card-permanently-downgraded-from-PCIe-Gen5-x16-to/m-p/1746609#M151339 <P>I have a pair of B70s - one of which negotiates PCIe @&nbsp;Gen5 x16, the other of which negotiates PCIe @&nbsp;Gen4 x16. &nbsp;This happens if I switch slots on either of two different motherboards from two different manufacturers. &nbsp;(All four combinations - motherboards involved are Asus WS WRX90E-SAGE SE and Gigabyte AI TOP.). The Gen4 negotiation follows the physical card - not the slot(s) involved.</P><P>Given one other post expressing a similar problem with the B70, at this point is this a known problem?</P><P>Do I need to contact warranty support - and exchange the apparently defective card - or is this something that will be fixed with a firmware upgrade?</P><P>Thanks.</P><P>&nbsp;</P> Sun, 03 May 2026 21:17:35 GMT https://community.intel.com/t5/Graphics/Arc-Pro-B70-card-permanently-downgraded-from-PCIe-Gen5-x16-to/m-p/1746609#M151339 mwaustin 2026-05-03T21:17:35Z https://community.intel.com/t5/Graphics/Arc-Pro-B70-card-permanently-downgraded-from-PCIe-Gen5-x16-to/m-p/1746622#M151341 <P>While trying further to figure out what was going on - I stumbled upon: "xpu-smi config" which displays a "PCIe Gen4 Downgrade" option - which was enabled. &nbsp;I disabled this option - and PCIe Gen5 is back!</P><P>Hope this helps someone!</P><P>&nbsp;</P> Mon, 04 May 2026 01:50:59 GMT https://community.intel.com/t5/Graphics/Arc-Pro-B70-card-permanently-downgraded-from-PCIe-Gen5-x16-to/m-p/1746622#M151341 mwaustin 2026-05-04T01:50:59Z