If you already agree with the Subject line just ingrore the
SATA II was the name of the standards group which they sense changed to SATA-IO.
They specifically demand than no one use the term SATA II for drive supporting 3.0 Gbps rates. SATA II means nothingl. If anything it would apply to all exisitng SATA drives.
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But isn't SATA 150 MBps equivalent to generation 1 in effect SATA I
while SATA 3.0 Gbps equivalent to generaltion 2 in effect SATA II
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A common myth is that SATA 3.0 Gbps supporting drives are the next gneration and have advanced features absenst from the earlier SATA 150 MBps.
Nothing could be further from the truth.
1) No SATA drive can break the 100 MBps barrier so increasing the interface's maximum limit to 300 MBps has no practical value!
2) Supporting the 3.0 Gbps transfer rates in no way indicates what other feature are choses. Some SATA 150's feature NCQ while some SATA 3.0's don't.
So drives cannot be divided into neatly into two classes based on maximum interface speed.
3) Western Digital has chosen to use SATA 150 for all their top of the line products like the new 150 GB Raptor. So SATA 3.0 does not be newer or better.
4) Some people claim 3.0 Gbps drives are faster, that maybe the interface is more efficent, or that they have caches that exceed 150 MBps giving them a speed boost. I have seen no evidnece of this and the fact that WD choses not to updgrad the 150 Raptor with a 3.0 Gbps interface while including the same interface on their non-Enterprise lines suggest to me that there is not benefit- at least not until hard drives get about 50% faster.
As far as the transfer rates go its just like ATA 100 vs ATA 133.
When evaluating hard drive's just ignore the SATA interface speed and look at the benchmarks and the supported features.
http://www.storagereview.com/php/benchmark/bench_sort.php
BTW if you think I am full of crap check out the SATA-IO's homepage. You can't get much more authoritative than that.
http://www.sata-io.org/namingguidelines.asp
SATA II was the name of the standards group which they sense changed to SATA-IO.
They specifically demand than no one use the term SATA II for drive supporting 3.0 Gbps rates. SATA II means nothingl. If anything it would apply to all exisitng SATA drives.
--
But isn't SATA 150 MBps equivalent to generation 1 in effect SATA I
while SATA 3.0 Gbps equivalent to generaltion 2 in effect SATA II
---
A common myth is that SATA 3.0 Gbps supporting drives are the next gneration and have advanced features absenst from the earlier SATA 150 MBps.
Nothing could be further from the truth.
1) No SATA drive can break the 100 MBps barrier so increasing the interface's maximum limit to 300 MBps has no practical value!
2) Supporting the 3.0 Gbps transfer rates in no way indicates what other feature are choses. Some SATA 150's feature NCQ while some SATA 3.0's don't.
So drives cannot be divided into neatly into two classes based on maximum interface speed.
3) Western Digital has chosen to use SATA 150 for all their top of the line products like the new 150 GB Raptor. So SATA 3.0 does not be newer or better.
4) Some people claim 3.0 Gbps drives are faster, that maybe the interface is more efficent, or that they have caches that exceed 150 MBps giving them a speed boost. I have seen no evidnece of this and the fact that WD choses not to updgrad the 150 Raptor with a 3.0 Gbps interface while including the same interface on their non-Enterprise lines suggest to me that there is not benefit- at least not until hard drives get about 50% faster.
As far as the transfer rates go its just like ATA 100 vs ATA 133.
When evaluating hard drive's just ignore the SATA interface speed and look at the benchmarks and the supported features.
http://www.storagereview.com/php/benchmark/bench_sort.php
BTW if you think I am full of crap check out the SATA-IO's homepage. You can't get much more authoritative than that.
http://www.sata-io.org/namingguidelines.asp