[NAME]  Either of those 2 fan cards will fit and work fine. However secure boot may need to be off in bios before they work.  This is a known issue since 2012. [URL]  
Hi community, I have an Aurora ALX (Intel i7 CPU 920 @ 2.67GHz, 2668 MHz, 4 Cores) with an ATI Radeon HD 5800 Series graphics card (PCI Express 2.0). I would like to replace the graphics card as it is having issues recently. Are there any recommendations on what product would work? I would like to replace it with a card with similar (in any case not inferior) performance and I need at least two HDMI ports. Would the following card be compatible: ASUS GT730-4H-SL-2GD5//GT730 HDMI 2GCTLR  ?? Any suggestions? Thanks in advance for your help.
Aurora ALX, replacement for ATI Radeon HD 5800