Thanks for posting in our forum.
Regarding your question, first of all, the Intel® SSD DC P3608 is a Data Center drive for high-end use like servers.
Also, this drive uses two controllers, it is just like having 2 SSDs.
Please check this link with a comparison of both drives, in there you will also see that the Data Center drive comes with enhanced power-loss data protection.
"Enhanced Power Loss Data Protection prepares the SSD for unexpected system power loss by minimizing data in transition in temporary buffers, and uses on-board power-loss protection capacitance to provide enough energy for the SSD firmware to move data from the transfer buffer and other temporary buffers to the NAND, thus protecting the system and user data."
All these reasons apply to the power consumption for each drive.
Please let us know if you have any other question.