Dell Precision M6600 Quad Core-i7 2.4 GHz | 32GB | 256GB + 750GB | 17.3" HD+ (1600 X 900) | NVIDIA Quadro 3000M | HDMI | e-SATA | DP | SD/SC | AGP | RJ45 | Windows 7 Professional | 225-0379

Dell Precision 3520 Quad Core i7-7700HQ | 32GB | 512GB SSD | 15.6" FHD IPS Touch | Nvidia Quadro M620 2GB GDDR5 | USB-C | SIM CARD | SD CARD | VGA | HDMI | 210-AKNL

Dell Precision 7520 Intel Quad Core i7-6820HQ | 32GB | 500GB | 15.6" UHD 4K (3840 x 2160) | 2GB RADEON PRO WX 4130 DDR5 GPU | 210-AKKD

Dell Precision M6600 Quad Core-i7-2720QM UP TO 3.30 GHz | 16GB | 320GB X2 | 17.3" UltraSharp FHD | NVIDIA Quadro 3000M | HDMI | e-SATA | DP | SD/SC | AGP | RJ45 | Windows 7 Professional | 225-0379