content_image/990699.jpg content_image/990700.jpg
## Considerations before you order 

The water-cooling option is preferable because it can substantially lower the total power consumption of z14 servers and the total cost of ownership for the CPC. This savings is greater for the larger models of z14 servers, as listed in Table 2-17. 

<img src='content_image/990699.jpg'>

The water-cooling option cannot be installed in the field. Therefore, you must carefully consider the present and future computer room and CPC configuration options before you decide which cooling option to order. For more information, see 10.1.3, “Cooling requirements” on page 393. 

## 2.9 Summary 

All aspects of the z14 structure are listed in Table 2-18. 

<img src='content_image/990700.jpg'>

