RAM, CPU, and NET limits

The FIO Chain inherits EOSIO resource management, but makes a number of modifications to it to remove the user complexity, while supporting its fee model.

RAM limits

Every new account will have initial RAM allocated to 25600 bytes (25K). Every time an account pays a fee or covers a transaction from a bundle, that account’s RAM will be permanently increased by the number associated with the executed action. In case of multi-action transactions, each action will increment the RAM independently.

Transaction Action Increase amount in bytes
Transfer FIO tokens trnsfiopubky 1024
Transfer locked FIO tokens trnsloctoks 1024 + 64 * number of lock periods
Map blockchain public address addaddress 512
Request funds newfundsreq 3120
Cancel funds request cancelfndreq 512
Reject funds request rejectfndreq 512
Record other blockchain transaction metadata recordobt 4098
Register Address regaddress 2560
Renew Address (deprecated) renewaddress 1024
Transfer Address xferaddress 512
Register Domain regdomain 2560
Renew Domain renewdomain 1024
Make Domain public setdomainpub 256
Transfer Domain xferdomain 512
Map NFT Signature to a FIO Crypto Handle addnft 2048
Stake FIO Tokens stakefio 512
Unstake FIO Tokens unstakefio 512
Wrap FIO Tokens wraptokens 512
Wrap FIO Domain wrapdomain 512
List domain on marketplace listdomain 1536
Vote on block producers voteproducer 1024
Proxy votes to registered proxy voteproxy 512
Register as a proxy regproxy 1024
Register as block producer regproducer 1024
Set fee ratios* setfeevote 4000
msig_propose propose Variable based on transaction
auth_link linkauth 1024
auth_update updateauth 1024


  • Account A registers a FIO Crypto Handle for themselves
  • Account A RAM is increased by 2,560 bytes
  • Account A transfers funds to a key not associated with an account
  • Account A RAM is increased by 2,560 bytes
  • Account B is created with initial limit of 25KB of RAM

Scheduled BP RAM override

When a BP is added to the BP schedule to produce blocks, their RAM limit will be changed to unlimited. When a BP is removed from BP schedule, their RAM will be changed to existing RAM usage of their account + 25K.

Transaction size limit

Every transaction is limited to max size of 8098 bytes. BPs in schedule are exempt from the transaction limit for propose actions.

CPU limit

All accounts are created with unlimited CPU, as only authorized contracts with pre-approved CPU usage can run on the FIO Chain.

NET limit

All accounts are created with unlimited NET, as there is a transaction size limit.