Macbook Pro (mid 2009) crashes after RAM upgrade
I would strongly recommend to use compatible memory, at least.

As per Apple Support, it is 1066 MHz memory


  Processor and memory
   - ...
  - 4GB (two 2GB SO-DIMMs) of 1066MHz DDR3 memory; two SO-DIMM slots support up to 8GB


Also, I used to have such a 13 Inch '09 Macbook, I'm pretty sure it was MacBook5,5, and it was equipped with 8GB of RAM and 500GB SSD; it worked just fine.