Barracuda 7200.11: ST3500320AS, 500 GB
Barracuda 7200.12: ST3500418AS, 500 GB
Barracuda LP: ST3500412AS, 500 GB
We’ve got three drives from Seagate here. Two of them are “fast” HDDs with a spindle rotation speed of 7200 RPM that belong to different generations. The 7200.11 series model is based on two platters (with three active head/surface pairs) whereas the newer 7200.12 series model has only one platter. Each HDD has an impressive 32 megabytes of cache.
The third Seagate hails from the power-efficient Barracuda LP series which has joined the ranks along with the 7200.12 series. This HDD has 32 megabytes of cache and one platter rotating at 5900 RPM.