I recently acquired a used EVGA 02G-P4-2684-KR and flashed it with the Mac ROM. So far it has worked as expected, the only thing unusual is that the boot screen from the HDMI output has a light green instead of the light gray background. Most issues and answers related to flashing the Mac ROM could be found from the following links: 1. EVGA announces a GTX 680 Mac Edition 2. Flashable GTX 680s being sold in the UK, super cheap! 3. Flashing the GTX680 2GB Added on 08/04/13: Dr. Stealth has an excellent thread on how to flash the GTX 680 4GB models at this link, and what 4GB models were successfully flashed. Currently both Newegg and Amazon are out of stock for the EVGA Mac Edition GTX 680. If you have no patience of waiting or want to save some money, a list of confirmed and possible reference design models that could be flashed is compiled as follows: Confirmed Flashable Models: EVGA 02G-P4-2680-KR EVGA 02G-P4-2682-KR EVGA 02G-P4-2684-KR EVGA 02G-P4-2687-KR MSI N680GTX-PM2D2GD5 PNY VCGGTX680XPB ASUS GTX680-2GD5 Gainward GeForce® GTX 680 2GB Most products here are linked to Amazon in the US and the price may vary frquently. Feel free to add other flashable models not listed here. Possible but Unconfirmed Models: Galaxy 68NPH6DV5ZGV ZOTAC ZT-60101-10P Based on the specs, these two could be flashable, but no confirmation yet. So do it at your own risk. Note: 1. Some people also mentioned the Palit GTX 680 2GB (NE5X68001042F) working, but there was a 10-second delay before the boot sceen appeared after the chime, and it is not sold in the US.