lol there is no "chipset" on a graphics cards. Maybe you're referring to a motherboard? The GPU's are the exact same, the only difference being the 6 GB has a few more GDDR5 modules soldered on.

That being said, it's clear there's some sort of price discrimination (in addition to inflated prices) if ASUS is shelling them out for $300 a pop. They know their market segment consists of financially secure, middle-aged men, who had not the slightest idea on what these "graphics cards" were up until yesterday. They know y'all will suck them up faster than a plate of crab legs at your daughters high school graduation party. The fact of the matter is, production of GPUs probably hasn't increased that much because they know investing in fixed, long-term production equipment for an outdated manufacturing process would depend almost entirely on the unstable cryptocurrency market. What's even more funny, is that these so-called "mining" cards are really just half assed graphics cards that will have 0 warrenty, and limited appeal to gamers when they're put up on the secondary market. Meaning -- less pricing competition for them in the future.