SATA II 7200 RPM vs SATA III 5400 RPM

marquisandres · Oct 18, 2014

Hi guys, This is my first question to this community, so forgive me if this has already been asked. I have 2 HD:
1. wdc wd1600aabs 00h4a0
2. wdc wd10ezrx-00l4hb0

These are the specs for each one:
WD1600AABS 160 GB SATA 3 Gb/s 7200 RPM Avg Seek 8.9 ms Buffer 2 MB
WD10EZRX 1 TB SATA 6 Gb/s IntelliPower Avg. Seek N/A Buffer 64 MB

I was wondering which one is faster, and which would be better to contain the OS?
Thanks in advance

rolli59 · Oct 18, 2014

7200 RPM drives are usually faster but yours is old, even if the new drive is SATA 6GB it will not use all the bandwidth of the SATA 3GB bus so it is hard to tell but I would guess the 7200 drive will be faster even if old. IT is a good size for an OS drive as well.

USAFRet · Oct 18, 2014

If one is 7200RPM and the other is 5400RPM....go for the the 7200RPM drive.

For spinning drives, neither will max out the SATA II port, so SATA II vs SATA III does not matter.

GhislainG · Oct 18, 2014

The newer and larger WD10EZRX will be faster. I wouldn't bother with the older and slower WD1600AABS.

Edit: You can check http://forums.anandtech.com/showthread.php?t=2294463 where the WD10EZRX was faster than an older 1TB WD Black; therefore it has to be much faster than the old WD1600AABS.

marquisandres · Oct 20, 2014

Thank you all for the answers, I'll try to run some benchmarks on my own, but it looks like the Green has some better performance, despite its lower speed.

GhislainG · Oct 20, 2014

The lower rotational speed implies higher latencies, but the actual transfer rate is significantly higher.

DataMedic · Oct 20, 2014

Rotational speed is only one small factor in how fast a drive is. 5400 RPM at 5x the data density is still 3x faster than 7200 RPM.

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