Originally posted by CochainComplex
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The thing here is when you relfow those generation of completely badly soldered Nvidia/AMD cards you go slightly above the original recommendation up to the revised recommend solder temperature both cases AMD/Nvidia recommendations on allowed solder temperature on those was too low.
Cheaper jacks can bring extra contamination into the solder and increase risk of dry joint with wacky behaviour. Even with high quality parts things can still go wrong where the solder process ends up off temperature problem is that slightly under temperature everything tests and looks perfect at the factory just its not going to stay that way.
Of course not all the parts that make up a GPU card are from the same vendor or have the same max recommend temperature so some parts on the board may be rated for a higher soldering temperature. The parts rated for higher soldering temperature could be a choke or something like it could be soaking up heat like a heat sink so result in solder on them and items near them not being the right temperature.
Basically there is a real art to soldering a multi part board and getting a 100 percent correctly soldered board every single time. There is a percentage of lemon.
You are right the design is a factor but its not the biggest factor these days as most of the design issues were addressed back in the day. The biggest factor is that the these solder faults getting to end users now are basically undetectable at factory so maker may only find out like 6-8 months latter when return merchandise authorization (RMA) of cards happen if they come back at all that something went slightly wrong on X day in the production line. Do note what I said users who get these cards who are not pushing the output to limit are not going to notice the defective solder joints in most cases until at least the warranty is over.
Its very hard to fix this class of problem. Percentage of cards is lemons we just have to accept it and pray if we are going to be pushing it to limit we don't get one.
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