Firstly. FPS performance hinges greatly on your Internet connection bandwidth. In a static situation you can get high frame rates with an average current day gaming PC. But with low bandwidth,,, get a sim with lots of moving avatars, the FPS will drop a lot. That's a situation the best hardware cannot overcome. Over a year ago I had funds to upgrade my PC, with the goal of better FPS in SL. During Black Friday of 2014 I bought a new MB and Processor. (MSI Z97 gaming 5 and an i5 4690K for the CPU). Since SL uses fairly old rendering tech CPU power plays a big part. That's why I abandoned the AMD processor of my older setup for the Intel and it paid off. The graphics card I had at the time was based on the Nvidia GTX 550 ti with 2GB ram. The total setup did rather well in SL. it was doubled the former FPS. (Goes to show how much cpu power plays in SL rendering.) A friend who upgraded his PC gave me his Radon 5970 card. Performance in Second Life was improved a little bit. But performance in games like Skyrim was greatly improved. This tells me that the graphics engine in SL, which is OpendGL based, doesn't take much advantage of the newer rendering hardware in the newer cards. Nvidia GPUs has been known to have better OpenGL performance compared to AMD GPUs. I would think getting a Nvidia card with high GPU clock speed would be the way to go. One of the fast GTX 760 ti cards should do well for SL, though it is a generation or so old.