I observed this behavior in a Dell system about a decade ago, but based on experience over the last 5 years or so with PowerEdge servers, installing a third-party GPU no longer triggers the (extremely loud) maximum fan-speed response.
Because they were the most well known of the affected companies and they didn't really do much to repair the goodwill the issue cost them.
Sure, they "put up $300 million for repairs" according to https://www.theguardian.com/technology/blog/2010/jun/29/dell..., but I bet the lions share of that went to their largest purchasers, so the people who blew their school's IT budget on Dell computers were just SOL.
