Gas cost of different computations

Question

Is there somewhere a list showing the different cost of different calculations?
For example:

• Perform transaction: 21'000 gas
• calculate a hash: 30 gas
• addition of two numbers: 3 gas
• cycle in a loop: 1 gas
• ...

Answer 1

Take a look to http://ethdocs.org/en/latest/contracts-and-transactions/account-types-gas-and-transactions.html.

Also, check the following spreadsheet: https://docs.google.com/spreadsheets/d/1m89CVujrQe5LAFJ8-YAUCcNK950dUzMQPMJBxRtGCqs/edit