Since we first peeked the new Sandy Bridge-equipped Dell Precision M4600 and M6600 back in February we haven't heard much about these mobile workstations. We still don't have prices or a release date, but a leaked manual has finally delivered some specs -- and CAD enthusiasts won't be disappointed. Both the 15.6-inch M4600 and the 17-inch M6600 can be configured with up to a Core i7 Quad Extreme 2920XM and 32GB of RAM. The smaller, 6.3-pound M4600 comes standard with a 1GB AMD FirePro M5950 and can be upgraded to an NVIDIA Quadro 2000M with 2GB. The more beastly 7.5-pound M6600 starts with a 2GB FirePro M8900 and has options ranging all the way up to a 4GB Quadro 5010M. Both machines also come packing two USB 3.0 ports, a pair of USB 2.0 connectors, an eSATA jack, and an IEEE 1394 port, giving you plenty of room to plug in all the external drives, cameras, scientific instruments, and cat-shaped mouse cozies your little heart desires.