All the details can be found here.
https://eshop.macsales.com/item/OWC/1866D3E8M24/
Product Specs:
Size: 3 x 8GB (8192MB)
240-pin SDRAM DIMM
1024M x 72, Dual Rank ECC Memory Module
Data Rate = 1866MHz
Module Bandwidth 14.9GB/s
CL13
Voltage 1.5V
Apple Specified Thermal Sensor
RoHS Certified
Warranty Safe Upgrade.
Lifetime Replacement Warranty from OWC
New unused, as Mac Pro sold before upgrade memory put in.
$150 (new price $265 at OWC).
https://eshop.macsales.com/item/OWC/1866D3E8M24/
Product Specs:
Size: 3 x 8GB (8192MB)
240-pin SDRAM DIMM
1024M x 72, Dual Rank ECC Memory Module
Data Rate = 1866MHz
Module Bandwidth 14.9GB/s
CL13
Voltage 1.5V
Apple Specified Thermal Sensor
RoHS Certified
Warranty Safe Upgrade.
Lifetime Replacement Warranty from OWC
New unused, as Mac Pro sold before upgrade memory put in.
$150 (new price $265 at OWC).