Volumetric Zones

Balanced Technology Extended (BTX) Interface

ID	Date	Version	Classification
600565	01/07/2018	1.1	Public

Volumetric zones are defined to provide a definition for mechanical requirements for each of the key system components areas. These definitions allow components in these areas to be designed separately and integrated without interface.

This section describes volumetric zones based from the motherboard planar (referred to as motherboard zones – Motherboard Volumetric Zones), volumetric zones based from the chassis (referred to as chassis zones – Chassis Volumetric Zones), and the placement requirements for all system components with respect to the zones. These requirements ensure that key system components do not mechanically interfere when they are integrated into a system.

The following figure shows some of these zones. Zones A, B,C and D are motherboard zones and Zones F, G, and H are chassis zones. Not shown in this figure are chassis zones J and K (under the motherboard).

Note:Some zones, like Zone A and Zone F, have two heights associated with them. This is to accommodate the two types (heights) of thermal modules and the corresponding system designs. Type I (Standard Height) is intended to be utilized where space is available to maximize the volume available for the thermal module solution design, while Type II (Low Profile) is included as an option for designs where lower profile components in this area are highly valued.

Figure 3-2. Chassis and Motherboard Volumetric Zones (not all zones are shown)

Chassis and Motherboard Volumetric Zones (not all zones are shown).PNG.png