Well we all know what us overclockers do with Intel Recommended amounts, it's all up to you.

Some memory XMP settings are 1.5+, so I think you are fine. If you would like a link to where I go more in depth on Vtt and XMP programmed amounts let me know and I will link you, but I think far above the recommended is fine. Of course you are right though, most of that would pertain to the 45nm i7's and memory made back then for those.