What feature differentiates Ultra High Speed HDMI from Premium High Speed HDMI?

The feature that differentiates Ultra High Speed HDMI from Premium High Speed HDMI is indeed the speed rating of 48 Gbps. Ultra High Speed HDMI is designed to handle higher bandwidth requirements, supporting advanced features such as 8K resolution at higher refresh rates and improved color depth, which necessitate this increased speed.

Premium High Speed HDMI, on the other hand, has a maximum bandwidth of 18 Gbps, which is sufficient for 4K resolution at 60 Hz but does not accommodate the higher standards and features offered by Ultra High Speed HDMI. This makes the distinction in speed ratings crucial, as it directly relates to the capabilities and performance of the HDMI connection for various content types.

While the support for 60 Hz frequencies is important, it is not the defining feature that sets Ultra High Speed apart from Premium High Speed, as both can support 60 Hz in certain conditions. The reference to supporting only 1080p resolution does not accurately reflect the capabilities of either HDMI type, since both can support resolutions higher than 1080p; it's just that the Ultra High Speed HDMI can go much further in terms of resolution and refresh rates.