Table: nvidia_chipsets_2
Columns: model
processors_supported
fsb_ht_frequency_mhz
memory
pci_express
sata
pata
sound

Question: Which processors are supported with a PCI-express of x16: 1 slot x1: 4 slots and the nforce 550 model?
SQL: SELECT "processors_supported" FROM nvidia_chipsets_2 WHERE "pci_express" = 'x16: 1 slot x1: 4 slots' AND "model" = 'nforce 550'

Question: What are the processors supported by a ddr2 memory and the nforce 550 model?
SQL: SELECT "processors_supported" FROM nvidia_chipsets_2 WHERE "memory" = 'ddr2' AND "model" = 'nforce 550'

Question: What is the PCI-express with a ddr2 memory and a nforce 520 model?
SQL: SELECT "pci_express" FROM nvidia_chipsets_2 WHERE "memory" = 'ddr2' AND "model" = 'nforce 520'