This is what our cad guys use at work.
225-0458 1 Dell Precision T1600 Standard Base
317-6059 1 Quad Core Xeon E3-1225, 3.10 GHz, 6M L3, 2GT, Turbo, Dell Precision T1600
317-2739 1 16GB, DDR3, Non-ECC SDRAM Memory, 1333MHz, 4x4GB,T1500
331-1965 1 Dell USB Entry Keyboard,No Hot Keys,English,Precision Desktop
320-3316 1 Monitor Option-None
320-1896 1 1GB nVIDIA Quadro 600,Dual Monitor,1DP and 1DVI,Dell Precision T1600
342-2145 1 250GB SATA 3.0Gb/s, 7200RPM Hard Drive with 8MB DataBurst Cache,Dell Precision T1600
342-2636 1 C1 All SATA Hard Drives,Non-RAID for 1 Hard Drive,3.5 Inch,Dell Precision T1600
342-2164 1 19 in 1,Media Card Reader,Dell Precision T1600
421-5607 1 Windows 7 Professional,No Media, 64-bit,Fixed Precision, English
330-6228 1 Windows 7 Label, OptiPlex, Fixed Precision, Vostro Desktop
421-5335 1 Dell Client System Update (Updates latest Dell Recommended BIOS, Drivers, Firmware and Apps),Precision Desktop
330-9458 1 Dell MS111 USB Optical Mouse,OptiPlex and Fixed Precision
430-3246 1 Integrated 10/100/1000 Ethernet
342-2165 1 MT Chassis Conf without 1394 Card,Dell Precision 1394
421-4370 1 Cyberlink Power DVD 9.5,No Media, Dell OptiPlex, Latitude and Precision Workstation
421-4539 1 Roxio Creator Starter,No Media,Dell OptiPlex, Latitude and Precision Workstation
318-0614 1 16X DVD+/-RW,Data Only,Dell Precision T1600
313-8764 1 Integrated 2.1 Channel Audio
313-2663 1 No Speaker option
318-0761 1 Precision T1600 265W 65% Efficient Power Supply
421-5090 1 Dell Data Protection Access,Precision Desktop
342-2635 1 Enable Low Power Mode for EUP Compliance,Dell Precision Desktop
331-2620 1 Regulatory Label,Dell Precision T1600
330-3157 1 Power Cord,125V,2M,C13,Dell Precision
331-2477 1 Documentation,English and French,Dell Precision
331-2720 1 No Out-of-Band Systems Management,Dell Precision T1600
330-2440 1 No Resource Media
331-2673 1 1 W ready mode - exceeds FEMP 3W recommendation. Mode can be disabled in BIOS. Dell Precision Desktop
331-1183 1 Quick Reference Guide,English,Dell Precision T1600
331-1189 1 Shipping Material for System,Dell Precision T1600
410-0560 1 Adobe Acrobat X, includes Serial Key Card, FI, ENG/FRN
421-3950 1 Microsoft Office Starter 2010,OptiPlex,Precision and Latitude
421-3954 1 Microsoft Office Home and Business 2010,English,OptiPlex,Precision and Latitude
935-2678 1 Dell Limited Hardware Warranty Plus Service Extended Year(s)
929-6847 1 Dell Limited Hardware Warranty Plus Service Initial Year
938-8622 1 ProSupport: Next Business Day Limited Onsite Service After Remote Diagnosis 2 Year Extended
951-8780 1 ProSupport: Next Business Day Limited Onsite Service After Remote Diagnosis Initial Year
989-3449 1 Thank you choosing Dell ProSupport. For tech support, visit
http://support.dell.com/ProSupport or call 1-866-516-3115
983-9162 1 ProSupport : 7x24 Technical Support , 2 Year Extended
984-5810 1 ProSupport : 7x24 Technical Support , Initial
900-9987 1 Standard On-Site Installation Declined
320-2939 1 Dell Professional P2212H,Wide screen,21.5in Viewable Image Size,HAS,VGA,DVI,Opti/FPWS
421-5682 1 Media Kit,Win 7 Professional 64bit,MUI,Dell OptiPlex, Precision and Latitude
* -DISCOUNT/COUPON APPL
Total $2072 you can save some money if you don't need office or the 3 year 24/7 pro support