Chipset Manufacturer: ATI DVI: 2 via Adapter DMS-59: 1 RAMDAC: 400MHz Analog Resolution: 2048 x 1536 Cooler: With Fan Operating Systems Supported: Windows Vista (64-bit and 32-bit), Windows XP (64-bit and 32-bit) and Windows 2000 Features: Low noise variable fan automatically adjusts speed for optimal cooling