Important features: Genuine Apple graphics card, model MC002Z/A Two high-resolution outputs with boot screen support: 1x DVI: up to 2560x1600 @ 60Hz 1x Mini DisplayPort: up to 2560x1600 @ 60Hz Mac GPU computing support: CUDA Compute 1.1 / OpenCL 1.0 / OpenGL 3.3 30-day warranty with full money-back guarantee† Specifications: 32 CUDA/OpenCL computing cores 512MB of 128-bit GDDR2 memory GPU/memory clock speeds: 500MHz/500MHz Maximum power consumption: 50W In the box: 1x Apple NVIDIA GT 120 512MB graphics card Compatible with: Mac Pro model: 3,1; 4,1; 5,1 (year 2008 and newer) Mac OS X version: 10.5.6+ (including Yosemite)