The idle spec for the multi-platter versions of the 7200.7/7+ is identical to the multi-platter rating for the B-IV and the B-V: 2.5 bels. Single platter version has a less-impressive spec: "<2.5 bels" vs. the 2.1 rating for the others. Still, the multiplatter specs are .3-.5 bels better than the 180GXP series.
The spec sheet offers 2 values for seek noise: performance seek and quiet seek. They are quite far apart - 3.4 vs. 2.8 (multi-platter). I wonder what the hit on performance is; my guess is it's probably similar to what that utility does to the IBM drives - circa 20 ms seek times.
These drives offer a big jump in transfer rates over the B-V, with specs comparable to the 180GXP. Looks like we'll be able to finally have our cake and eat it too - state of the art performance with very little noise. I think I'll delay my new system build until the + versions are available.
Those with marginal power supplies should check their +12v rail loads before installing multiple 7200.7's - these babies drink power, with a maximum drain of 2.8 A vs. the more standard 2. They are likely to run on the warm side, with a wattage on idle higher than the warmest IDE drive rated by StorageReview (the 180GXP).
Barracuda 7200.7 specifications
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