NVIDIA gave the GeForce RTX 20-series a midlife refresh with the new "Super" brand extension in the wake of AMD's upcoming Radeon Navi 7nm GPU. The RTX 2070 is based on the RTX 2080, which means SLI support and more shaders compared to the the original RTX 2070.
Slow computer got you down? Maybe a hardware upgrade should be in your cards, if so this guide to the Fundamentals of Upgrading a PC is an invaluable read. PCSTATS Tips