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Can SATA 6.0 replace SATA 1.5 HD?

Last response: in Storage
October 1, 2012 5:01:37 PM

I am going to recycle my old Dell desktop computer from 2004 to use as an emergency back-up computer. It has a Seagate Barracuda 7200.7 (ST380013AS) HD that I want to replace, and then reinstall Windows XP. The old HD is SATA 1.5 Gb/s. Can I replace it with a Western Digital WD Blue (WD5000AAKX) SATA 6.0Gb/s? Will the old motherboard and hardware - and Windows XP - recognize this new drive? Will the new HD be recognized, but not operate at its rated potential? Any other suggestions for an inexpensive replacement HD for this system?


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a c 85 G Storage
October 1, 2012 5:48:34 PM

Yes, it should work just fine in the older system.
a c 104 G Storage
October 1, 2012 5:48:46 PM


Can't comment on your MB and hardware since you didn't mention their model numbers or the Dell Model.

The WD 500GB AAKX is backward compatable with the SATA 1.5 Gb/s controllers. Should be no problem. It will transfer data at the slower rate.

Some of the WD SATA 3 Gb/s drives need to be jumpered pins 5-6 to put them in 1.5 Gb/s mode, but there is no mention of the SATA III drives requiring a compatability jumpered mode.
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a b G Storage
October 1, 2012 7:36:40 PM

I've never heard of a sata hdd having backwards compatibility issues. It will not be slower. 1.5Gb/s = 192MB/s, I have that same model aakx and it tops out at ~120 MB/s (using sata 3 [6Gb/s] connection). Other 500gb 7200rpm hdds will be similar speeds.
a c 271 G Storage
October 1, 2012 7:57:32 PM

If your old system has a VIA VT8237 SATA controller, for example, then it will not play with a 3Gbps or 6Gbps HDD unless that HDD can be restricted, either via jumper or firmware, to a SATA interface rate of 1.5Gbps.
October 1, 2012 11:45:13 PM

Thanks so much for your suggestions, everyone!