In a bid to simplify branding, Western Digital’s subsidiary, WD, has elected to merge their Green drive lineup into their Blue brand, taking WD’s lineup down to just four colours to denote performance levels and use cases – Blue, Black, Red, and Purple. With the Green line falling away, consumers now only have the Blue line to choose from for budget internal storage, and things get trickier with figuring out what kind of performance they’ll get out of the drives. Hit the jump for more.

With the new lineup, Blue drives now incorporate drives with rotational speeds of 5400-7200rpm, or 7200rpm for the higher-performance models more suited for use as boot drives. According to WD, you can tell which class a drive fits in by looking at the model number; a model number ending in “Z” denotes a 5400rpm drove, while one ending with “X” indicates that the drive’s default speed is 7200rpm. The re-branding should start this month, so older stocks of Green drives should still be around for a while to make things easier. As an example of how things will change for consumers, let’s take a look at a few listings of drives on Takealot:

While it doesn’t seem too complicated, some of theses drives also incorporate something that WD calls “Intellipower”, which is a power management feature that spins the drive up to specific rotational speeds to balance power requirements, speed, and heat production, for better overall efficiency. WD never publishes the true speeds of these drives, choosing to label them as “5400rpm-class” or “7200rpm-class” hard drives. Because of that, you’ll see that some drives get their performance profiles dropped to the lower level with this rebrand (and more are listed in the source link). Its worthwhile, then, picking up a drive you’ve had your eye on before it’s replaced with the newer version that might have less performance on offer.

Source: WDC.com