4GB (2GBx2) DDR2 800MHz ECC FB-DIMMS for 2008 Mac Pro Model 3.1

2GBx2 DDR2 800MHz ECC Fully-Buffered DIMMS (FB-DIMMs) for the 2008 Mac Pro Memory Model 3,1. Contains two (2) 2GB FB-DIMMs that are specifically designed and SPD configured for the Mac Pro 2nd Generation Model. This module is compatible with the latest Apple Firmware. Specifications: Total Capacity: 4GB (2GBx2) Data Rate: 800MHz Bus Speed: PC2-6400 Form Factor: DDR2 ECC FB-DIMM No. of Pins: 240, 256Mx32 Dual Rank Voltage: 1.8V CAS Latency: 5-5-5 Bandwidth: 6.4GB/s Features: True DDR2 Major Thermal Tested ROHS Certified, Compliant with JEDEC specifications Watch our installation video: or click here for Apple's installation guide (PDF.)