Seems to have been some interest in OpenVMS compatible graphics cards of late. I think this one will work: http://www.ebay.co.uk/itm/PBXGK-BB-ELSA-GLORIA-GRAPHICS-CARD-298693-001-298796-001-DEC-COMPAQ-ALPHASERVER-/190581049081?pt=UK_Computing_Computer_Components_Graphics_Video_TV_Cards_TW&hash=item2c5f8406f9