by Thomas De Maesschalck july 03 2008
Tom's Hardware Guide has compared the power consumption of solid state disks and hard disk drives and came to a shocking conclusion: SSDs actually use more power than HDDs! This may come as a surprise as it's widely believed that SSDs improve battery life in notebooks but that's not true because, contrary to HDDs, these disks always operate at their maximum power level when in use. In contrast, flash SSDs only seem to know two states: active or idle. We don’t have specific information on this, but we received confirmation from two vendors that many flash devices don’t feature power saving mechanisms yet. On the one hand, the entire industry is looking to improve MLC flash to enable larger flash SSDs at sufficient performance levels. On the other hand, wear leveling algorithms are more important than power saving features, as durability may be an issue with SSD drives.
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