Single SSD or two SSD's in RAID0?/Benchmark results

Computer Type: PC/Desktop
System Manufacturer/Model Number: Custom Build
OS: Win 7 Ultimate 64 bit
CPU: Intel i7-3930K
Motherboard: ASUS P9X79 WS
Memory: Kingston HyperX Genesis 32GB Kit (8x4GB Modules) 1600MHz DDR
Graphics Card: MSI R7850 Twin Frozr 2GD5/OC Radeon HD 7850 2GB 256-bit GDDR
Sound Card: Asus Xonar Essence STX
Monitor(s) Displays: 3x Asus VG248QE 24", Vizio 32" TV
Screen Resolution: 1920 x 1080, ?
Keyboard: Logitech G510s
Mouse: Logitech M525 (two in use)
PSU: Corsair HX750w
Case: Antec Two Hundred v2 (modified)
Cooling: Cooler Master GeminII S524 120mm (fan replaced with a 140mm)
Hard Drives: Samsung 128GB 840 Pro SSD (1), Samsung 4TB 850 EVO SSDs (4) Samsung 4TB 850 EVO SSDs (16) external backup drives used in 2.5" hot swap bays in the computer.
Internet Speed: =< 32Mbps down, 8Mbps up
Browser: IE11
Antivirus: AVAST!, MBAM, SAS, Spybot S&D (all but MBAM free) Glary Util
Other Info: LSI 9211-8i HBA card (8 SATA III ports), 2.5" & 3.5" Hot Swap Bays, HooToo HT-CR001 PCI-E to USB 3.0 Internal Hub + 6 Slot Card Reader, and LG Model CH12LS28 BD-ROM Optical Drive. Also, ScanSnap S1500 ADF duplexing scanner, Canon 9000F flat bed scanner, Corsair SP2500 2.1 speakers, Samsung CLP 415nw laser color printer, Cyberpower PP2200SW UPS

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.

Computer Type: PC/Desktop
System Manufacturer/Model Number: Custom Build
OS: Win 7 Ultimate 64 bit
CPU: Intel i7-3930K
Motherboard: ASUS P9X79 WS
Memory: Kingston HyperX Genesis 32GB Kit (8x4GB Modules) 1600MHz DDR
Graphics Card: MSI R7850 Twin Frozr 2GD5/OC Radeon HD 7850 2GB 256-bit GDDR
Sound Card: Asus Xonar Essence STX
Monitor(s) Displays: 3x Asus VG248QE 24", Vizio 32" TV
Screen Resolution: 1920 x 1080, ?
Keyboard: Logitech G510s
Mouse: Logitech M525 (two in use)
PSU: Corsair HX750w
Case: Antec Two Hundred v2 (modified)
Cooling: Cooler Master GeminII S524 120mm (fan replaced with a 140mm)
Hard Drives: Samsung 128GB 840 Pro SSD (1), Samsung 4TB 850 EVO SSDs (4) Samsung 4TB 850 EVO SSDs (16) external backup drives used in 2.5" hot swap bays in the computer.
Internet Speed: =< 32Mbps down, 8Mbps up
Browser: IE11
Antivirus: AVAST!, MBAM, SAS, Spybot S&D (all but MBAM free) Glary Util
Other Info: LSI 9211-8i HBA card (8 SATA III ports), 2.5" & 3.5" Hot Swap Bays, HooToo HT-CR001 PCI-E to USB 3.0 Internal Hub + 6 Slot Card Reader, and LG Model CH12LS28 BD-ROM Optical Drive. Also, ScanSnap S1500 ADF duplexing scanner, Canon 9000F flat bed scanner, Corsair SP2500 2.1 speakers, Samsung CLP 415nw laser color printer, Cyberpower PP2200SW UPS