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CPU is the system in Robocraft that limits the number of cubes that a robot can consist of. If a cube placement would take a robot over a players current CPU limit, then that placement will classify the robot as a Megabot and only the Play vs AI, Test, and Custom gamemodes will be available.


The amount of CPU on a robot (Central Processing Unit) is expressed in the number of pFLOPS (Peta-FLoating-point Operations Per Second), which in turn is a measurement of computer performance. Every Chassis part (blocks), Movement part, Weapon, and Special part uses a certain amount of CPU. For example, a Health cube uses 1 pFLOPS, while an Aeroflak Guardian uses 300 pFLOPS.

There also exists Cosmetic CPU, which allows for Cosmetic parts to not take up regular CPU space until it is filled first, however after the Cosmetic CPU is filled, placing a Cosmetic part will take up regular CPU.

How to check your CPU usage.[]

While in your garage, look to the top right of your screen and you will see a hud containing a blue CPU bar; this hud is also accessible from the garage screen.


  • Before that, CPU depended on the player's account level, while there was no other reward for leveling up.
  • In real life, FLOPS (an abbreviation for FLoating-point Operations Per Second) is a measurement of a computer's speed. 1 PFLOPS is equivalent to 1,000,000,000,000,000 floating-point calculations per second.
  • As of June 10, 2013, the world's fastest supercomputer could only reach speeds of 33.86 PFLOPS.
  • Though this is likely a typo, pFLOPS with a lower-case p means picoFLOPS. A computer with a speed of 1 PicoFLOPS performs 1 calculation every trillion seconds (over 31,000 years). This would mean it would be the worst computer ever made. The lower-case p was likely meant to refer to petaFlops, which is a quadrillion calculations per second.