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Momentus ST9750420AS 750GB 7200RPM, 16MB cache


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Was just loitering around the web and noticed this driver has made it to New Zealand (and is already out of stock)

This now takes the crown for speediest spindled HDD.



Model Number ST9750420AS

Interface SATA 3Gb/s

Cache 16MB

Capacity 750GB

Areal density (avg) 541Gb/in2

Guaranteed Sectors 1,465,149,168


Height 9.5mm (0.370 in)

Width 69.85mm (2.750 in)

Length 100.35mm (3.951 in)

Weight (typical) 115g (0.254 lb)


Spin Speed 7200 RPM

Average latency 4.2ms

Random read seek time 11.0ms

Random write seek time 13.0ms

I/O data transfer rate 300MB/s

Unrecoverable read errors 1 in 1014

With a larger cache (finally) but still only 16MB this should do quite well.

Probably would have bought one if they were in stock.

All the specs for Seagate Momentus ST9750420AS

Any body out there with one, that can give us their experiences ?

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Not available yet anywhere I see. Not listed on Newegg or Amazon. There's a thread on notebookreview ( http://forum.notebookreview.com/hardware-components-aftermarket-upgrades/487689-seagate-momentus-7200-5-750gb-7200rpm-hard-drive-st9750420as.html ) from May where people were looking for it after it had been announced and as of Aug, they were still looking.

In that thread, they did list a Samsung 640gb 7200rpm 2.5 drive I had been unaware of. http://www.newegg.com/Product/Product.aspx?Item=N82E16822152237

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Getting drives and drivers mixed up again Pieter?

Maybe you need some hot sauce to clear your head. :)

It probably performs very similar to my 500 GB versions, which have the same amount of cache.

Single drive benchmarks, short and long, third pic is 3 in a RAID0.




If everything about this drive is the same except the density it might have a proportional speedup. However I would personally wait for a new hybrid version with a built in SSD.

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