Maximum GPU length: 322 mm (200 mm if installing a 120 mm radiator)
The Terra has a movable motherboard plate, also called "spine", which can be adjusted sideways allowing you to increase the size of the CPU chamber or GPU chamber. There is a total of 7 settings, where setting 7 allows for the thickest GPU support, and setting 1 allows for the tallest CPU cooler.
| Position 1 | Position 2 | Position 3 | Position 4 | Position 5 | Position 6 | Position 7 | |
| CPU cooler clearance | 77 | 72 | 67 | 62 | 57 | 53 | 48 |
| GPU max thickness with a maximum height (width) of 131 mm | 43 | 48 | 53 | 58 | 63 | 67 | 72 |
| GPU max thickness with a maximum height (width) of 145 mm | 33 | 38 | 43 | 48 | 53 | 57 | 62 |
The reason for difference above between the GPU being at maximum 131 or 145 is due to the side panel being wider towards the top of the case, and cause a wider GPU to interfere at an earlier stage if above 131 mm.
Below you can find a clarification of previously mentioned difference of GPU width (image displayed as if seen from rear of the case):
