Question about Windows 7 retail full single license versus 3 pac .

System Manufacturer/Model Number: Self Built
OS: Win 7 Ultimate 32bit
CPU: C2D E6600 2.4Ghz
Motherboard: Intel D965WH
Memory: 4G Kingston KHX5400D2
Graphics Card: EVGA GTX 570 HD SC (012-P3-1573-KR)
Sound Card: On-Board
Monitor(s) Displays: Samsung 226BW
Screen Resolution: 1680 x 1050
PSU: Corsair TX750W
Case: In-Win C589
Cooling: Stock Intel Cooling
Hard Drives: 2 x 250 Seagate Barracuda 2 x 500 Seagate Barracuda (Raid1)

System Manufacturer/Model Number: Dell XPS 15 L502X
OS: Windows 7 Pro x64
CPU: i5 2430M
Motherboard: Dell 0NJT03
Memory: 6 G's
Graphics Card: NVidia GE Force 540M
Sound Card: Nvidia High Definition Audio
Monitor(s) Displays: Asus VW246H
Screen Resolution: 1920 x 1080
Keyboard: Dell
Mouse: MS Laser
Case: Dell
Cooling: Air only
Hard Drives: Toshiba MIK5061 GSY
Internet Speed: broadband 15 Mbit/s

Computer Type: PC/Desktop
System Manufacturer/Model Number: Home Built Desktop By DataTech
OS: Windows 7 Ultimate X64 SP1
CPU: Intel i5-2550K, Differing ~4.4-4.8GHz No built in GPU
Motherboard: ASUS P8Z68-V PRO/GEN3
Memory: 16GB G.Skill Sniper 1866MHz @ 2133MHz 2x8GB
Graphics Card: ASUS GTX650TIB-DC2OC-2GD5, (650TI Boost)
Sound Card: Onboard Realtek 5-1
Monitor(s) Displays: Samsung P2570HD
Screen Resolution: 1920x1080
Keyboard: E-Z Eyes, bright yellow keys with large characters
Mouse: steelseries SENSEI Laser Pro Gaming
PSU: Corsair HX650W
Case: Inwin Dragon Rider
Cooling: Hyper 212 EVO w/two Noctua fans, push-pull, @1300 RPM
Hard Drives: Samsung 840 Pro 256GB SSD for OS, 500GB Seagate Constellation (Enterprise drive) for Data
Internet Speed: 48-51Mbs Mbs down, 11 Mbs up Xfinity Cable
Browser: IE 10, Opera, Pale Moon if needed
Antivirus: Norton Internet Security 2013
Other Info: 4 case fans, LG BluRay-RE, ASUS DVD-RW, Mr. Fusion power supply, 1.21 gigawatts.