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The fact that the 7200.4 also features 16MB of onboard cache memory-twice what’s available from the rest of the field-certainly raises our performance expectations for the drive. Spindle speed counts for a lot with mechanical storage, giving the Momentus 7200.4 a significant advantage right out of the gate. That’s because the Momentus manufacturer is the only drive maker currently selling 500GB notebook drives at both 5,400 and 7,200 RPM. But that raises the question: with all the major players lining up at the same capacity, which drives stand out? To find out, we’ve gathered 500GB flavors of Hitachi’s Travelstar 5K500.B, Samsung’s Spinpoint M7, Seagate’s Momentus 5400.4, and Western Digital’s Scorpio Blue for a good old-fashioned throw-down.Īs you’ve surely noticed, we have two drives from Seagate. Unlike 3.5″ desktop drives, where manufacturers’ flagship models are strung out between one and two terabytes, 500GB is the highest 2.5″ capacity offered by Hitachi, Samsung, Seagate, and Western Digital. What is surprising is the fact that the highest capacity 2.5″ mechanical hard drives on the market are so inexpensive. Solid-state drive prices may be falling, but they still have a long way to go. The fact that traditional hard drives offer better value, on a cost-per-gigabyte basis, than SSDs is certainly not surprising. Most will set you back less than a c-note, which, in the SSD world, buys just 32GB. So what about those 500GB mechanical notebook drives? Today, they’re available for between 26 and 17 cents per gigabyte. Lower-capacity SSDs typically run two to three dollars per gigabyte, with more expensive models pushing a whopping four bucks a gig. That lofty cost per gigabyte isn’t confined to premium capacity points, either. You’re going to pay north of $1,500 for a 512GB SSD, which works out to nearly three dollars per gigabyte. Today’s 2.5″ mechanical drives top out at 500GB, which is just a smidgen less storage than 512GB SSDs currently for sale.
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In fact, SSDs have already matched the capacity of the roomiest notebook drives on the market. And let’s not forget that 2.5″ mechanical hard drives don’t pack nearly as much capacity as their 3.5″ counterparts, giving SSDs less of a storage gap to bridge. The mobile world is also where the superior shock tolerance and lower power consumption inherent to flash-based storage pay the biggest dividends. For one, the overwhelming majority of consumer-grade SSDs conform to a 2.5″ form factor compatible with all but the thinnest and lightest of ultraportable systems. Notebooks are about as close to home court as it gets for solid-state drives. Although they’re slowly gaining a following among performance-hungry enthusiasts who live on the bleeding edge, SSDs have yet to make major inroads among mainstream users, even in the mobile world. For now, however, solid-state drives are largely confined to the fringes.
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Depending on who you ask, these high-performance arrays of flash memory chips either represent the future of PC storage or a major bifurcation in the industry. SSDs have stolen much of the limelight in the hard drive world.