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## Power consumption 

The utility power consumption for the z15 for PDU option is listed in Table 11-4. 

<img src='content_image/971828.jpg'>

Note:  Consider the following points: 

GLYPH<SM590000> The power values that are listed in this table assume the CPC process drawer and PCIe+ I/O drawers are plugged to the maximum with highest power features (that is, memory and I/O adapters and fanouts). Also assumed is that maximum ambient temperature is used. 

GLYPH<SM590000> Typical configurations and data center conditions result in lower power. A calculator available on Resource Link calculates power and weight for specific configurations and environmental conditions. 

Considerations:  Power consumption is lower in a normal ambient temperature room, and for configurations that feature a lesser number of I/O slots, smaller amount of memory, and fewer PUs. 

Power estimation for any configuration, power source, and room condition can be obtained by using the power estimation tool that is available at the IBM Resource Link website (login required). 

## 11.1.2 Bulk Power assembly (BPA) 

On the Resource Link page, click Tools → Power and weight estimation . 

The Bulk Power Assembly consists of the following features: 

GLYPH<SM590000> BPA (FC 0640) 

GLYPH<SM590000> Balanced Power Plan ahead (FC 3003) 

GLYPH<SM590000> Bulk Power Regulator (BPR) (FC 3016) 

GLYPH<SM590000> Internal Battery Feature (FC 3217) 

