The cable in detail
The 16AWG cables used are not only more flexible due to the different sheathing, they are also of the same high quality. You have to search for a total of 115 small wires, each with a nominal cross-section of 0.12 mm.
You can ask the manufacturer or simply measure them yourself. And yes, they are the same thin wires as the competitor. It doesn’t get any better than this.
I later combed the wire smooth again for the measurement and simply had the AI of the VHX counted. Here is the picture after stripping and before combing and measuring.
The wires are made of pure copper with a wafer-thin, galvanic tin coating of around 1 µm. The microscopic marks on the surface are normal and a result of the tinning process.
The insulation is fire-retardant in accordance with UL94-V0. My vertical lighter test caused the small flame of the melting material to extinguish on its own after around 10 seconds. But even Seasonic smells infernally of firefighter perfume.
The connector in detail
The fire-retardant nylon housing of the connector consists of two parts, of which the top cover can also be removed (see photo on the first page), which I simply did. The embossed H (not visible here on the left-hand side) stands for the iteration as a genuine 12V-2×6 according to CEM 5.1, i.e. the improved version with the four shorter sideband contacts and the 12 extended power and ground pins. The fact that the spring contacts are not all centered is due to the design and therefore not a defect. As these contacts are not firmly soldered and fixed in place, but are pressed in neatly crimped, they are very flexible and adapt almost willy-nilly to even bad headers with crooked pins.
Of course, I also opened up the connector once, took it apart completely and took a closer look at one of the dimple contacts:
If you take a closer look at the picture, you can see a recess on both sides below the innermost dimple, which is not listed in the NVIDIA document on the dinple connectors and nobody could tell me anything about its purpose. In addition, the distance between the three dimples is not the same. But I’ll keep at it, because I’m also very interested in this. Others didn’t have these grooves.
The spring contacts are also made of pure electrolytic copper and are sufficiently, but not too thickly, tin-plated on a first layer of nickel (< 5 µm]. The gaps of the opening and the spring behavior are good. The distances between the contacts and the front are also correct.
Finally, we come to the dimensions of the closed connector, which is important for installation. With an average installation height of less than 2 cm (from the top edge of the graphics card header), the angled cable easily beats all adapters and manually bent radii of normal cables. Less than 1 cm of space is required between the top edge of the graphics card housing and the highest point of the connector. In the worst case, the length of the connector is around 2 cm, which can also be left as it is. You certainly won’t be able to do any better and, above all, any smaller.
That concludes the theoretical part and we can now move on to the practical part of the test. And yes, it will be excitingly unexciting, I can spoil that for you…
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