At that time I ended up just buying a gaming PC packaged with the card. I find it's generally worth it to upgrade all the components of the system along with the GPU every 3 years or so.
This goes at a significant premium for on average OEM parts that are subpar. Buying individually yields much better results and these days it's less of a hassle than it used to.
It was likely from an integrator not a huge OEM that's spinning their own proprietary motherboard designs like Dell. In that case they only really paid the integrator's margin and lost the choice of their own parts.