are both of them together 3200 MHz?

No, the total speed of the memory kit is 1600 MHz, not 3200 MHz.

Questions & Answers: CMS 16GB (2X8GB) DDR3 12800 1600MHz NON ECC DIMM Memory Ram Upgrade Compatible with HP/Compaq® Pavilion 500-097, 500-149, 500-152Ea, 500-164 - A63

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CMS 16GB (2X8GB) DDR3 12800 1600MHz NON ECC DIMM Memory Ram Upgrade Compatible with HP/Compaq® Pavilion 500-097, 500-149, 500-152Ea, 500-164 - A63

Computer Memory Solutions guarantees compatibility with models provided in description.
Memory Type: Non-ECC DIMM, 240-Pin
Speed: DDR3-12800, 1600 MHz
2 Piece Kit
Product appearance may vary. Picture for reference only. limited lifetime warranty when bought directly from computer memory solutions