Graduated from a famous university in China.
The average score is 90~95.
The total score of IELTS is above 7.5, and the single subject is not less than 7.
These are just the minimum requirements for your application to Cambridge University. Whether you can be admitted depends on other factors, such as whether you are suitable for your major and whether you have relevant scientific research or work experience.
Regarding your question, you must have a GPA of 4.5 or above to be sure. You are a sophomore now, and your GPA is not enough. You can study hard in your junior and senior years. In scientific research, the quality of articles is more valued by teachers; IELTS score above 7.5 is safe.
If you have any questions, please ask me again: -D