Consumers are already torn between choosing Blu-ray and HD DVD for their high definition format, but that's only the surface competition. If you dig a little deeper, you can find that there is another battle commencing between HDMI and DisplayPort, two different interface standards. Although HDMI seemed to the main choice among manufacturers, DisplayPort 1.1 has now been approved which could reignite the competition, giving yet more trouble for people moving to high definition. The main improvement of 1.1 is that it boasts High Bandwidth Digital Content Protection (HDCP) version 1.3, however groups backing HDMI still argue that HDMI can still do everything that DisplayPort can and more, urging manufacturers to stick to HDMI. But with the backing of large companies such as AMD, NVIDIA, HP, Lenovo and Samsung, DisplayPort won't be defeated too easily, and consumers could have some more HD headaches still to come. DisplayPort could well become the replacement for DVI among graphics card companies, whilst HDMI looks to have control of the TV based market.