The Sim Chip is a premium gear introduced in 1.15
It goes in the Left gear slot and does damage to Flying Enemies - so you could pair it with the Metal Detector for farming runs
It boosts your XP as follows:
| Rarity | Boost |
|---|---|
| Common | 6% |
| Uncommon | 9% |
| Rare | 12% |
| Epic | 15% |
| Legendary | 18% |
| Mythical | 21% |
| Exalted | 24% |
| Deluxe | 27% |
If you have the Super Battle Pass, the 30% bonus will be on top of this (i.e. Prison Planet is 234300 XP, +12% for Rare makes it 262,416, and if you had the SBP you’d get 341,140 with the 30%)
Note that their currently seems to be some rounding down happening from these percentages, looks like they are calculating the bonus per room, rounding down each time