Table: gpu_specs_2
Columns: model
year
code_name
fab_nm
bus_interface
transistor_count_millions
memory_max_mib
core_mhz
memory_mhz
type
bus_width_bit
directx
shader_model
opengl
maximum_resolution
iceq4_cooling_system
notes

Question: What's the bus width (in bit) of the model whose core is 650 MHz?
SQL: SELECT COUNT("bus_width_bit") FROM gpu_specs_2 WHERE "core_mhz" = 650

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 gpu_specs_2 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 gpu_specs_2 WHERE "model" = 'HIS HD4850 (512MB)'