 "Western Digital Blue 1 TB Internal HDD" " Western HDD - WD10EZEX Desktop Hard Drives CDW.com
"Built to WD's highest standards of quality and reliability, WD Blue offers the features and entry-level capacities that are ideal for your computing needs. WD Blue is designed by the brand that you trust with the quality you would expect for a tested, proven, everyday storage solution." 
 "ST1000DM003 Seagate Barracuda 1TB SATA 6.0 Gbps Hard Drive"
 Model Manufacturer Seagate Manufacturer Part # ST1000DM003 Product Line Barracuda Performance Product Type Internal Hard Drive Form Factor 3.5-inch Capacity 1 TB Cache 64 MB Spindle Speed 7200 RPM Average Seek Time 8.5 ms Drive Interface Type SATA 6.0 Gbps Other Information Features Seagate AcuTrac Technology Seagate OptiCache Technology Seagate SmartAlign Technology