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few of the contents in this write-up is most most likely out that date, together it was created on August 11, 2011. For more recent information, seeour much more recent articles.

In the offical SATA-IO record "Fast Just acquired Faster: SATA 6Gb/s", the adhering to is stated:

The same cables and also connectors supplied for present SATA implementations have the right to be offered to affix SATA 6Gb/s devices. SATA-IO recommends making use of quality components to ensure data integrity and also robust procedure at the quick 6Gb/s transfer rate. Cables already at the threshold of 3Gb/s operation margins may experience reduced performance than supposed at 6Gb/s as result of an increased number of resends.

In various other words, as long as you space not making use of cheap knock-off cables there must not be any difference. We prefer to have actually empirical data to earlier up these types of cases however, therefore we chose to to compare a collection of an alleged SATA 3Gb/scables versus a SATA 6Gb/scable.

Before to run the rate tests, we cut open a collection of cables to check out if we could find any type of design differences. The large things to look for at the number of wires and also the gauge (size) of the wires.


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Asus SATA 6Gb/s (Black)Asus SATA 3Gb/s (Red)Asus SATA 3Gb/s (Black)Intel SATA 3Gb/s (Blue)
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In the pictures, the sleeved wires space all the signal wires, and also the unsleeved are the ground wires. You have the right to see that all the cables have the samegauge of signal wire, back the Asus SATA 6Gb/s and also the Intel SATA 3Gb/s both have second ground wire. This is no for performance reasons, however simply due to the architecture of the cable. Instead of having actually the cable in one piece, those two cables are more like two different cables unify together. This have to not have any effect top top performance, which hope our rate tests will certainly verify.


Speed tests

To to compare the speeds because that each cable, us configured our test tough drive together a secondary storage drive and also ran the benchmarks through each different cable. We used a an extremely fast SSD SATA 6Gb/s drive on a SATA 6Gb/s port, so any loss the speed need to quickly end up being evident. The benchmark we used was CrystalDiskMark.

Test Hardware:
MotherboardAsus P8P67 Pro
SATA ControllerIntel P67 SATA 6Gb/s
RAM2xKingston ValueRAM DDR3-1333 2GB
CPUIntel 2500K Quad main point 3.3GHz
Hard DriveIntel SSD 510 250GB SATA 6GB/s
OSWindows 7 ultimate 64-bit

With all that said, lets take a look in ~ the actual performance of every cable. All outcomes are in MB/s.


Asus SATA 6Gb/s (Black)Asus SATA 3Gb/s (Red)Asus SATA 3Gb/s (Black)Intel SATA 3Gb/s (Blue)
Sequential Read464.2464.0462.7460.5
Sequential Write326.8328.2328.9327.5
Random check out 512KB314.6314.8315.3315.1
Random create 512KB301.4301.2300.8301.3
Random review 4KB (QD=1)19.819.819.819.8
Random compose 4KB (QD=1)44.043.943.944.0
Random read 4KB (QD=32)80.380.180.280.1
Random compose 4KB (QD=32)50.750.650.750.6

From these results, we can pretty conclusively recognize that all of these cables space running at the complete SATA 6Gb/s speeds. There room of course part minor differences in between the results, however they room all well within normal testing variations.


Conclusion

In conclusion, our experimentation has i agree 100% with SATA-IO's statement the SATA 3Gb/s cables will job-related perfectly fine through SATA 6Gb/s drives.This wasn't much of a surprise to us, yet it is constantly nice to have tough data backing increase a claim.

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