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Do you have a source for those claims? It seems highly unlikely to me that certain types of cpu's or gpu's are allowed errors to cut costs. Rounding mechanics are complicated, but I'd say a bug is a bug. As mentioned in a comment by jackmott in this thread, "engineering purposes" also often actively reduce precision for increased performance.

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Double precision floating point and the addition of ECC memory.

In the case of nVidia the quadro cards are the only ones sold as manufactured by the company and are incredibly high binned.

Lots of people on this thread are conflating a few things such as ML, but I work in an industry where we deal a lot with GPUs and its certainly a fact that flipped bits are significantly more common than many think. If you do any work that requires the output to be nonvolatile then you can run into issues.

Perhaps he is referring to ECC memory - high end pro model NVIDIA cards have it, and consumer cards don’t. Here is a paper showing that there are memory errors on the consumer non-ecc cards.

http://ieeexplore.ieee.org/document/5493404/?arnumber=549340...

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