How the Length of a SATA Cable Influences an SSD

The use of SSD is more than widespread today, where HDDs have been left for other secondary tasks. After the revolution that led to the jump to solid state drives, many wondered about the limitations that the SATA 3.0 interface could have in a key section for certain sectors: the loss of performance due to the greater length of the data cable. What is real about this? Is there such a loss?



This factor does not apply in principle to traditional HDDs due to simple logic: they do not collapse the interface. But it would also be interesting if there is a loss to see what is in these mechanical hard drives.

How the Length of a SATA Cable Influences an SSD

As we know, SATA 3.0 SSDs currently push their interface to the limit and therefore the distance factor could mean a further loss depending on which cables. This has not been verified until now, so we will know the answer.

Five different length SATA cables tested

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Although we believe we are very advanced, today’s SATA cables are one of the biggest sources of problems for traditional PCs. It is a component that fails more than it should and that is why many technicians and users always buy quality cables.

Some manufacturers take this very seriously and introduce really good, hard and well shielded cables with their motherboards that will last us decades without problems. But what they do not do is include different lengths, so the performance question has always remained in the air.

The cables tested have been of five different lengths: 20 cm, 30 cm, 50 cm, 70 cm and 100 cm, where from the shortest to the longest there is 5 times their total distance. The data belongs to the Japanese website Akiba-PC, where they have also measured the access time to rule out possible inconsistencies in the data.

The SSD tested is the well-known Crucial MX500 with NAND Flash Micron and with a solvency beyond doubt.

As we see, the data is really solid, even under 4KQ1T1 , where this SSD like all really suffers to maximize performance. If we stick to the percentages, the differences between cables barely exceed 1%, so we are facing a metric that falls within the possible values and typical measurement errors.

Access times, another determining factor in an SSD

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As expected, access times are even more precise in terms of differences when it comes to SSD performance. All of them accurately dial 0.029 ms , so we can safely say that, today and with quality cables, there is no difference in performance or access time between the shortest and longest cables.

The next comparison would be to face low quality cables against shielded, clip-on and good connection cables, that is, high quality. So we could know if it is indeed worth spending a little more on this type of cable (security aside) or instead cheap ones can make up for us for a while.

And let’s remember, SATA cables are the main source of problems for current SATA 2.5 ″ SSDs in millions of PCs every year.