Mixing jointly two technologies which are developing in parallel may frequently produce the cooperation that users are looking for. When it comes to hard disk drives, we can evoke Western Digital’s Raptor as a creation that shared a spindle speed of 10,000 RPM typical of server HDDs and a SATA interface accessible on normal desktop PCs. The resulting super-fast desktop HDD enjoyed high demand.

The new series is no different from normal 2.5-inch drives externally. The stability is also highlighting by the use of the Momentous brand. The XT suffix has to have been rented from the desktop Barracuda XT series. The HDD part of this hybrid device is attractive in itself, although not excellent. It is a 2.5-inch HDD with one or two 250GB platters rotating at 7200 RPM. It has 32 megabytes of cache memory (the previous Momentous 7200.4 series used to have only 16 GB). The SSD part of the Momentous XT consists of 4 gigabytes of SLC flash memory.

SPECIFICATIONS

• Interface: SATA 3 GB/s

• Cache: 32MB

• Capacity: 500GB

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• Areal density (avg): 394 GB/in2

• Guaranteed Sectors: 976,773,168

• Physical: Height 9.7mm (0.378 in) Width, 70.10mm (2.76 in) Length, 100.55mm (3.959 in) Weight (typical) 110g (.238 lb)

• Drive Transfer Rate 300 MBps

• Average Latency 4.17 ms

• Spindle Speed 7200 rpm

• Storage Hard Drive / Non-Recoverable Errors 1 per 10^14

• Start / Stop Cycles 600,000

• Interfaces1 x Serial ATA-300 - 7 pin Serial ATA

• Compatible Bays1 x Internal - 2.5" x 1/8H