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Upgrade Advice: Does Your Fast SSD Really Need SATA 6Gb/s?

Test Setup And Benchmarks

Test Hardware
ProcessorIntel Core i5-2400 (Sandy Bridge), 32 nm, 3.1 GHz, LGA 1155, 6 MB Shared L3, Turbo Boost Enabled
MotherboardGigabyte GA-Z68X-UD7-B3
MemoryKingston Hyper-X 8 GB (2 x 4 GB) DDR3-1333 @ DDR3-1333, 1.5 V
System DriveOCZ Vertex 3 240 GB SATA 6Gb/s
Tested DrivesIntel SSD 320 300 GB SATA 3Gb/s, Firmware: 1.92
Samsung 830 256 GB SATA 6Gb/s, Firmware: CXMO
Crucial m4 256 GB SATA 6Gb/s, Firmware: 0009
OCZ Vertex 3 240 GB SATA 6Gb/s, Firmware: 2.15
GraphicsPalit GeForce GTX 460 1 GB
Power SupplySeasonic 760 W, 80 PLUS Gold
System Software and Drivers
Operating SystemWindows 7 Ultimate 64-bit
DirectXDirectX 11
DriverGraphics: Nvidia 270.61 RST: 10.5.0.1022Virtu: 1.1.101
Benchmarks
Tom's Hardware Storage Bench v1.0Trace-Based
Iometer 1.1.0# Workers = 1, 4 KB Random: LBA=16 GB, varying QDs, 128 KB Sequential
PCMark 7Storage Suite