It is difficult to find a 4K gaming monitor under $300 as 4K monitors tend to be more expensive. However, some options that may be available at a lower price point include the Acer R240HY or the Sceptre U278W-4000R. These monitors are not specifically marketed as gaming monitors, but they do have 4K resolution and may be suitable for gaming. It is important to note that these monitors may not have the same features and performance as higher-end gaming monitors and may not be suitable for all types of games or gaming setups.
Acer R240HY
The Acer R240HY is a 23.8-inch monitor with a 4K resolution of 3840 x 2160. It has an IPS panel, which provides wide viewing angles and accurate colors. It has a slim bezel design and supports VESA wall mounting. It has a 60Hz refresh rate and a 4ms response time. It has a built-in speaker, but no USB ports. The R240HY is a budget-friendly 4K monitor, but it may not have all the features that a high-end gaming monitor would have. It is better suited for casual gaming, media consumption, and general use.
Sceptre U278W-4000R
The Sceptre U278W-4000R is a 27-inch monitor with a 4K resolution of 3840 x 2160. It has a 60Hz refresh rate and a 5ms response time, which makes it suitable for casual gaming. It has a VESA wall mount compatible design, and a slim bezel design. It also has a built-in speaker and support for VESA wall-mounting. However, it does not have a USB port. It is also a budget-friendly 4K monitor, but it may not have all the features that a high-end gaming monitor would have. It is better suited for casual gaming, media consumption, and general use.