The Max 15 minute load averages are listed below:
- Level 1 VPS = 1.00
- Level 2 VPS = 2.00
- Level 3 VPS = 2.00
- Level 4 VPS = 4.00
- Level 5 VPS = 4.00
If your load is higer than the limit established it means that your website cpu requirement should be addressed in dedicated server service.
Here is great article that explains CPU Load in Linux Servers: