Answer:
Sacrifice
Money
Gain
Security
Sacrifice
Computing speed
Gain
Time
Explanation:
The first sacrifice would be money as you would spend a good sum of money to buy the software that locks all your different passwords for each online account and in the same vein, you gain security because now, you stand at less risk of being hacked because of all your passwords are stored in a secure place which can be accessed by a master password that's easily remembered.
The second sacrifice would be sacrifice of computing speed.
The software to store the numerous passwords would take an amount of space in the computer memory, thereby altering the computing speed of the computer.
But the gain is time because you don't have to run the risk of forgetting passwords and going through the rigors and time consuming process of retrieving password.