CMS 16GB (4X4GB) DDR2 5300 667MHZ ECC Fully BUFFERED DIMM Memory Ram Upgrade Compatible with Dell® Precision Workstation T7400 for Server Only - B104 at Amazon.com
DELL Precision T5400 (8x8) - 2 x Quad-Core Xeon, 2 x Quadro FX4600, 8 x 1GB FB-DIMM - YouTube
32GB KIT (8 x 4GB) for Dell Precision Workstation Series 490 690 (1KW) 690 (750W) 690n (750W) T5400 T7400. DIMM DDR2 ECC Fully Buffered PC2-5300F 667MHz Server Ram Memory. Genuine A-Tech Brand.
Amazon.com: Dell Precision T5400 Workstation With Intel Xeon Processor(s), DDR2 Memory, SATA Hard Drive(s), nVidia Video Card, and Windows Operating System : Electronics