Collectors in extreme mode at first are very different than normal mode and easy mode collectors. The collectors in extreme start with a huge downside which is its collection rate. The further you go in extreme mode the better collectors you can find.

Collector Multiplier Energy Consumption
Crimson Drop Sapper ^(1/3) 0 U
Crimson Resampler ^(1/2) 0 U
Crimson Tenth Altar x0.1 2.048k U
Crimson Value Equalizer x1 102.4k U
Vine Forge Collector x1.5 1.024k U
Novarium Quarantine Collector x2 131.073k U