Technology $130 Thunderbolt 4 vs cheaper USB-C cables (with CT-scanned results)

Ink

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Jan 8, 2011
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Lumafield, maker of manufacturing-minded industrial CT scanners, studied this question across three dimensions. After scanning Apple's top-of-the-line cable, a $10 Amazon Basics model, and USB-C cables costing $5.59 and $3.89, Lumafield had no definitive answer other than "we buy cables that meet our needs" and that "there’s plenty of room for clever engineering and efficient manufacturing" inside a seemingly defined spec like USB-C.

But we can say that if your goal is to buy one cable that will hold up to abuse, work with the power and data speeds of today and a reasonably distant tomorrow, and remove cables from your list of things that might be the problem? Lumafield's images show why Apple's alpha-cable might just be worth it.

[...]

All this is encased in hard plastic, laid over a stainless steel shield fully bonded to the connector, and a single-piece strain crimped on eight sides at the cord's meeting with the connector. The cable is, as Lumafield puts it, "a stunning piece of precision engineering."

The Neptune Industrial X-Ray CT Scanner is 6 feet wide and costs $75,000 per year on a standard contract, including advanced imaging and diagnostic software and support. By putting Apple's Thunderbolt 4 Pro USB-C cable inside, Neptune was able to see literally everything that went into it. You can look at it, too, in a web version of Lumafield's Voyager software.

Then there are the sub-$10 cables, and, well, they look like it. One $5 cable—since discontinued on Amazon—has no shielding, an ungrounded and non-reinforced shell, rubber strain relief, and has the pins running straight to the wires, with no board in between. It also seems to lack the ability to provide the speeds it claims.

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Full analysis of USB-C cables after a CT scan + results​

Source: Lumafield - USB-C head-to-head comparison
 

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