your pc will definitely boot faster using an ssd and you can put what you want on in. putting games on you're boot ssd will not make it slower. ssd's can start running slower if they get full as they don't have much space to move the files around, but in you keep it under 90% full you should have no issues. i recommend the samsung 860 evo, good reviews, well liked and not too expensive. its also on sale at umart, AU$120 for 500GB.