Homestead

First planned hard fork - contract creation gas fix

EIPs Changing Gas Costs

Operation	Gas Cost
`arithmetic ADD`	`3`
`arithmetic ADDMOD`	`8`
`arithmetic AND`	`3`
`arithmetic BYTE`	`3`
`arithmetic DIV`	`5`
`arithmetic EQ`	`3`
`arithmetic EXP`	`10`
`arithmetic GT`	`3`
`arithmetic ISZERO`	`3`
`arithmetic LT`	`3`
`arithmetic MOD`	`5`
`arithmetic MUL`	`5`
`arithmetic MULMOD`	`8`
`arithmetic NOT`	`3`
`arithmetic OR`	`3`
`arithmetic SDIV`	`5`
`arithmetic SGT`	`3`
`arithmetic SHA3`	`30`
`arithmetic SHA3 word`	`6`
`arithmetic SIGNEXTEND`	`5`
`arithmetic SLT`	`3`
`arithmetic SMOD`	`5`
`arithmetic SUB`	`3`
`arithmetic XOR`	`3`
`base G base`	`2`
`base G high`	`10`
`base G low`	`5`
`base G mid`	`8`
`base G verylow`	`3`
`base G zero`	`0`
`blockchain BLOCKHASH`	`20`
`blockchain COINBASE`	`2`
`blockchain DIFFICULTY`	`2`
`blockchain GASLIMIT`	`2`
`blockchain NUMBER`	`2`
`blockchain TIMESTAMP`	`2`
`flow GAS`	`2`
`flow JUMP`	`8`
`flow JUMPDEST`	`1`
`flow JUMPI`	`10`
`flow MSIZE`	`2`
`flow PC`	`2`
`memory G memory`	`3`
`memory G quadraticmemdenom`	`512`
`memory MLOAD`	`3`
`memory MSTORE`	`3`
`memory MSTORE8`	`3`
`precompiles ECRECOVER`	`3000`
`precompiles IDENTITY`	`15`
`precompiles IDENTITY word`	`3`
`precompiles RIPEMD160`	`600`
`precompiles RIPEMD160 word`	`120`
`precompiles SHA256`	`60`
`precompiles SHA256 word`	`12`
`stack DUP`	`3`
`stack POP`	`2`
`stack PUSH`	`3`
`stack SWAP`	`3`
`storage SCLEAR refund`	`15000`
`storage SLOAD`	`50`
`storage SSTORE refund`	`15000`
`storage SSTORE reset`	`5000`
`storage SSTORE set`	`20000`
`system CALL`	`40`
`system CALLCODE`	`40`
`system CALL new account`	`25000`
`system CALL value transfer`	`9000`
`system CREATE`	`32000`
`system RETURN`	`0`
`system SUICIDE`	`0`
`system SUICIDE refund`	`24000`
`transaction G transaction`	`21000`
`transaction G txcreate`	`32000`
`transaction G txdatanonzero`	`68`
`transaction G txdatazero`	`4`