Sorry, I know absolutely nothing about Beta.
However, the MINIMUM system requirement for D3 per Bnet Technical Support (updated Feb 1, 2012):
OS: MacOS X 10.6.8, 10.7X (Latest Version)
Processor: Intel Core 2 Duo
Video: NVIDIA GeForce 8600M GT or ATI Radeon HD 2600 or better
Recommended System Specifications:
OS: MacOSX 10.7X (Latest Version)
Processor: Intel Core 2 Duo
Memory: 2GB RAM
Video: NVIDIA GeForce GT 330M or ATI Radeon HD 4670 or Better
That means at least a Mac OS X Snow Leopard, but Mac OS X Lion recommended.
I have a Quad-Core iMac, but never upgraded to OS X Lion because it is incompatible with Quicken.
I'm hoping Intuit will come up with a re-engineered version before D3.
http://us.battle.net/support/en/article/...quirements
Angelstar3
P.S. Isn't there ANY beta player with a Mac? I'm interested in a reply too.
P.P.S. Here's one post on Beta Mac OS X performance...
http://eu.battle.net/d3/en/forum/topic/3313063186