Yeah ? That was before Sandy Bridge then because Pentium i3 to i7 of that generation didn't support it. Neither did the original Core i. Core 2 was another matter entirely since the RAM controller was part of the chipset. You could get a Core 2 duo on a workstation mobo and thus get ECC support, but note the use of "workstation".
With Ryzen, you could get working ECC suport on a $80 mobo with a $150 CPU and a bit of reading.
You're trying to sell "better"RAM support from a company that didn't support XMP on non-OC platform up until a couple years ago.