So, I'm digging up this thread again. I have the same experience with:
- Hackintosh i3 with 460GTX and 480GTX (G92)
- Hackintosh C2D with 9800GTX+ (G92)
- Mac Pro 3.1 with GTX285 (G200?)
All of these struggle with Minecraft. The Mac Pro should have much higher framerate than 40-60FPS, the other two are getting 20-40FPS, while getting 3x that in Windows or OS X Lion.
I'm fairly sure this is a problem with OpenGL (3.0 and 3.1 on these cards). It makes no sense, but something happened after Lion, probably from Yosemite or Mountain Lion (not tested). Minecraft is locked to OpenGL 2.1, so maybe there is something there? Poor OpenGL 2.1 performance...
Otherwise things seem to be as it should, but it seems as especially OpenGL software is struggling.
Anyone know what it could be? Are there problems with these exact graphics card chips?