American universities consider both cumulative GPA and major GPA in graduate applications, with many departments valuing a strong major GPA, especially if the overall GPA is lower. A major GPA of 3.8 can compensate for an overall GPA around 3.4, but if the overall GPA falls below 3.0, it may not be sufficient, as many programs require a minimum of 3.0. The competitive GPA for admission is typically higher, often around 3.4 to 3.5, influenced by other factors like GRE scores, research experience, and recommendations.Regarding application submission timing, while some admissions committees may begin reviewing applications early, final decisions are generally made after the deadline to ensure all applications are considered together. Applying early may not significantly impact the outcome, but it can demonstrate enthusiasm. The existence of multiple application deadlines allows universities to manage their admissions process more effectively, accommodating different applicant situations and potentially increasing the pool of candidates.