Question: What's the bus width (in bit) of the model whose core is 650 MHz?
SQL: SELECT COUNT("Bus Width ( Bit )") FROM "1-19161046-1" WHERE "Core ( MHz )" = 650.0;

Question: What's the directx of the model with code name RV770 PRO and a core bigger than 650.0 MHz?
SQL: SELECT "DirectX" FROM "1-19161046-1" WHERE "Code name" = 'RV770 PRO' AND "Core ( MHz )" > 650.0;

Question: What are the notes recorded for the model HIS HD4850 (512MB)?
SQL: SELECT "Notes" FROM "1-19161046-1" WHERE "Model" = 'HIS HD4850 (512MB)';