Last week Western Digital made a splash with a 2-terabyte, eco-friendly hard drive sporting eco-friendly, energy saving features. While the capacity is sure to excite computer enthusiasts looking to store massive amounts of media or even those looking for a spacious drive for data backup, the few that demand speed from their hardware will be disappointed as the actual disk rotational seed has yet to be disclosed.

On the other hand, Seagate unveiled a drive with the same capacity running at a speedy 7200 RPM. Seagate achieved the monumental capacity through four platters housed within the enclosure, each with an areal density of 500 gigabytes. The drive — which is part of the newly created Constellation moniker — is aimed at enterprises looking for a ton of space. While it's not the same eco-conscious drive Western Digital is showing off, Seagate's Constellation drive does power down when not in use.

The only downside: Seagate won't be shipping these bad boys until sometime this September. If minimal power draw and slower performance aren't a huge setback for you, Western Digital's newest 2 TB drive should satisfy your hunger data storage whereas Seagate's new Constellation drive would be the optimal choice for speed.

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