I plan to purchase the Mac Mini Server with the Quad Core processor. I was thinking of ordering the twin 750 GB Hard Drives instead of the stock twin 500 GB drives. Will there be a difference in fan noise or heat compared to the stock version. I will also upgrade the RAM to 8 GB. I will use the computer for FileMaker Pro database, internet, streaming videos and music to my Apple TV, and Handbrake. Thank you