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Upgrading my Latitude D820 to a SATAII 7200rpm disc
I need a larger disc for my Latitude D820 and have been looking at SATAII 3Gb/s discs which operate at 7200rpm. There are lots of posts on supplier forums saying that they installed this type of disc in their laptop and got a considerable improvement in performance.
So the questions are:
- Is a SATAII 7200rpm disc going to be compatible with my D820?
- Will I see any improvement
given that it is an older machine
ejn63
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March 22nd, 2010 16:00
1. Yes.
2. If you're going from 5400 rpm to 7200, probably yes. If you're going from 7200 SATA 150 to 7200 SATA 3G, no way - there is simply no difference for a single drive. Even if the system supported 3G (it doesn't), the limit is the spin speed - not the interface. Even a 7200 rpm drive will deliver well under half of what SATA 150 can sustain - let alone SATA 3G.
For a single drive, there is no performance difference between SATA 150 and SATA 3G. The interface may be different but the drive's spin speed, which is the ultimate determinant of performance, is not.