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Seagate Momentus 5400.6: ST9500325AS

 

Of course, such a prominent maker as Seagate could not afford lagging behind its opponents. So, the company now offers the sixth generation of 2.5-inch Momentus drives with a spindle rotation speed of 5400rpm. Like other makers, Seagate offers a 500GB model with data encryption but it belongs to the Momentus 5400 FDE series.

Seagate Momentus 7200.4: ST9500420ASG

 

However, Seagate also offers a unique model that has no counterparts in the other makers’ line-ups. We are talking about the 500GB Momentus 7200.4 drive that has a spindle rotation speed of 7200rpm. Seagate has outpaced its opponents in this market sector as they can only offer 7200rpm 2.5-inch models with a capacity of only 320GB as yet. We are very curious to learn the speed and power consumption characteristics of this product in comparison with the others.

Toshiba MKxx55GSX: MK5055GSX

 

The 500GB drive from Toshiba is the last one on our list. It is no different from its opponents. It is just another 2.5-inch hard disk with the maximum storage capacity available today.

The other HDDs to be included into this test session were covered in our previous article on early 500GB HDDs. These are the Hitachi Travelstar 7K500, Samsung SpinPoint M6 and Western Digital Scorpio Blue.

We want to say a few words about the Samsung SpinPoint M6. We had had suspicions about the specs of this HDD but the publication of them at the company’s website made it clear that Samsung had made a small miracle and packed three platters and six heads into a case of a standard rather than increased thickness. This should allow Samsung to come up with larger-capacity products ahead of its opponents, although a 750GB model is not expected yet (but if the recording density is increased just a little, three platters will yield 1 terabyte, which is a highly appealing opportunity).

Summary

The following table lists the specifications and firmware versions of the tested HDDs:

Most of the models are very like each other, don’t you think? The Seagate 7200.4 stands out with its higher spindle rotation speed and double amount of buffer memory (16 rather than 8 megabytes). And it is only Seagate’s HDDs that have a declared seek time other than 12 milliseconds. So, the HDDs are indeed very similar in their specs.

 
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