There are two RTX 4090 12VHPWR adapter manufacturers, and a report now suggests one is more prone to issues than the other.
The manufacturers in question are NTK and Astron, with the latter’s connector the more problematic of the two. Igor reckons some batches of connectors from Astron suffer from substandard soldering quality, in part due to inadequate strain relief. It’s thought this is down to a production errors rather than inherent to the design given the soldering contradicts Astron’s own schematics for the connector as obtained by Igor’s Labs. That helps explain the randomness of the failures.
The internal spring contacts differ between the two vendors, too, with Astron using contacts with two slots, NTK only one and also of a different shape. Net result? The Astron connector tends to have more electrical resistance, especially after multiple insertions. Igor likewise found the Astron connector’s injection moulding was of poorer quality, along with a range of further issues.
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