Yeah the 7950... And I looked at different options like compression. Just resize to 2048 and you should be fine. I fear that compression would take even more system resources to render in-game.
Just be warned though: you might want to sit down and watch some TV, watch a movie, buy groceries, go to work/school, go to the bank, or make yourself a proper meal like BBQ salmon and sides. This does take a long time depending on how many extra mods that introduce new graphics (new weapons, armor, etc.) on top of STEP, the amount of resizing, and how fast your computer is. I probably could have got through the full extended version of Blues Brothers (Not Blues Brothers 2000) while my computer ticked away .