Cinebench R15
GT 840M-54.4 FPS
R7 M260-35.2 FPS
3D Mark 11
GT 840M -2363.1 points
R7 M260-1859.6 points
So , GT 840M is about 50% faster than R7 M260
The CPU is a little faster than of the Toshiba
Recap : The HP is 50% more powerful in gaming and also faster in every day tasks