Server recommendation for my websites?

[Webmaster]

Hello, I have a forum website(invision board) and need some inputs to select a dedicated server. My forum has 8 million posts (Including posts and topics) in total. Right now i am using Xeon 5260 2 bay chaisis, 12 gb ram, 400 gb SD. I just want to know how can we determine the server configuration based on what factors? Do you know anything about GTHost.com dedicated hosting services? Any experiences? Where can I read reviews about them?
Thanks

 

[Drovemark]

The service has proven to be reliable. Can recommend GTHost.com E5-2650v2, 64GB, 2x480GB SSD, 500M Unmetered starting at $99 per month.
Overall, my hosting experience has been consistently positive, reliable, and performance-driven, making it an essential part of my online success.