The lines have strict tolerances as far as relative length to each other to preserve timing without compensating for it at the endpoints, also parallel lines have to contend with parasitic capacitance,among other things, that occurs between the wires on the bus. That is not to say that parallel technology cannot be ramped up, it's just that it tends to be a greater engineering challenge and more expensive at the onset. So, high speed serial transfer technology wins for now.
What Hat Monster meant when he said "it isn't", is that a hard drive running on a Serial ATA interface isn't going to be any faster than the same hard drive running on a standard ATA interface. Yes, but wouldn't a faster bus speed mean better system performance, regardless? The local bus spends less time tied up transferring disk data to memory, and any time not used by disk transfers can be used for other things.
Anyhow, the main problem with parallel is Eight or sixteen times as many lines certainly would mean eight or sixteen times the bandwidth - theoretically. With all these wires so close together, though, their electric fields start interfering with each other and generating false signals, and the faster the clock, the worse the crosstalk.
Serial cables with fewer lines have MUCH less crosstalk, and can also use fancy stuff like balanced signals to make them go even faster. Just about every serial protocol but the old standby RS uses balanced signals these days.
Is parallel IDE still possible at higher speeds? I think so, but not without rewriting their cable design from scratch; and a revamped parallel design's not likely to be as cost-efficient as serial ATA is now.
Next step, universal optical bus! Not really. The PCI bus or even the southbridge that your IDE controller is hooked up to very rarely saturates all available bandwidth for any appreciable amount of time-- particularly if your southbridge has a very fast transport link. Well, it's not quite THAT simple, or else some of the orgami-folded ribbon cables would have higher error rates, too.
We're generally talking very small increases in error rates. But this is a different animal here Cite APA 7 , l. Difference Between Similar Terms and Objects. MLA 8 , lanceben. Name required. Email required. Please note: comment moderation is enabled and may delay your comment. The connectors are black in a pin connector while in an pin connector, they come in 3 colors: blue - controller, gray - slave drive, and black - master drive.
Each cable has two or three connectors, one connector is attached to the interface that connects to the computer system mother board and the others are connected to the drives. SATA consists of an 8 mm wide wafer connector on each end and the cable has a 7-pin connector, 3 grounds and 4 active data lines in two pairs.
This video explains how to change the hard drive on a desktop computer; it also shows the differences between SATA and IDE connector cables. However, only one of the two may be used at any given time and both cannot be used simultaneously. In order to overcome this limitation, eSATAp drives were introduced. The first generation of SATA was 1. Today the third generation of SATA 3. The wide wire in IDE cables caused airflow problems inside the case. This interface used different wires to carry data, causing the wires to result in a tangled mess and often ending up creating problems.
At present, almost all computers use the ATA interface to transfer data and information. There are a few differences that are quite apparent on both the interfaces. Here are some of the major ones:. The increased speed is quite useful for loading of images, videos, and larger documents. For someone who likes playing games, high data transfer speed means they could experience a smooth, better gaming session.
While the maximum length of a PATA cable can extend only up to inches, a SATA cable can extend up to 1 meter, making the moving around of hard drive more flexible. The cable is easier to detangle with the SATA cable , as it can be moved around with more space within the loops.
PATA being an older version of ATA interface does not support hot swapping, which means you cannot change or replace the part while the computer is in use, while with SATA hot swapping is possible. In turn, it increases the life of a computer in the long run and faster performance on a daily basis.
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