intel speed step

CPU: Intel i7 9750 H 16 gb ram 56 watt battery Dell Inspiron 7591 On charge, it delivers 3-4.5 ghz reliably and is not too bad with heat. When I remove charge, it clocks down to around 1 ghz. The max speed i clocked was 1.4 ghz. Although i get around 5-6 hours of normal use, it feels very slow...

Hello! I had my current pc built some 3 years ago, and now want to buy new gpu but im worried it won't work with my psu. Card i want to buy is MSI GeForce GTX 960 Armor 2X and it states it needs 29a 400w. Power should not be the problem but amps are cause for concern. superpower 750w atx v 2,0...