Nvidia is going to allow their AIB partners to create custom overclocked cards with faster memory. The current GTX 1060 utilizes 8Gbps GDDR5 and the custom cards will utilize 9Gbps GDDR5. The stock GTX 1080 utilizes 10Gbps GDDR5X memory and the custom cards will have 11Gbps GDDR5X. This will allow for more flexibility in differentiating product lines. These are to be sold by NVIDIA's AIB partners as overclocked cards, and don't represent a change to the official specifications on either graphics card. With this move, NVIDIA aims to give partners more flexibility in choosing memory speeds and carving different models of the same graphics card, with varying degrees of overclock, something which was particularly hard to do on conventional 10 Gbps-equipped GTX 1080's, which showed atypically low memory overclocking headroom.