Dell 980 256MB AMD Radeon HD 3470 Graphics, dual DP, 512MB AMD Radeon HD 4550 Graphics, dual DP

256MB AMD Radeon™ HD 3470 Graphics, dual DP	MT		DT	SFF
Bus Type (example integrated or PCIe x16)			PCIEx16
GPU core clock			750Mhz
Frame Buffer Memory (onboard and shared) Size and Speed			500Mhz
Maximum power consumption			18W
Overlay Planes			Yes
Maximum Color Depth			32-bit
Maximum Vertical Refresh Rate			85Hz
Multiple Display Support			Yes
Operating Systems Graphics/ Video API Support		D3D and OpenGL
Supported Resolutions and Max Refresh Rates (Hz) (Note: Analog and/or digital)	Max : 1920x1440/32bpp @ 75Hz
	Min : 640x480/8bpp @ 60Hz
External connectors			2 Display Port
Dimensions of full height card inches/centimeters (L x H)	167.64mm x		167.64mm x 120mm
	120mm
Dimensions of low profile card inches/centimeters (L x H)			167.64mm x 85mm
Environmental Operating Conditions (Non-Condensing):
Operating Temperature Range			10°-50° C
Relative Humidity Range			5-90% RH
Altitude Range			0-20,000 ft.

512MB AMD Radeon™ HD 4550 Graphics, dual DP	MT		DT		SFF
Bus Type (example integrated or PCIe x16)			PCIEx16
GPU core clock			750Mhz
Frame Buffer Memory (onboard and shared) Size and Speed			800Mhz
Maximum power consumption			25W
Overlay Planes			Yes
Maximum Color Depth			32-bit
Maximum Vertical Refresh Rate			85Hz
Multiple Display Support			Yes
Operating Systems Graphics/ Video API Support		D3D and OpenGL
Supported Resolutions and Max Refresh Rates (Hz) (Note: Analog and/or digital)	Max : 1920x1440/32bpp @ 75Hz
OptiPlex 980 Technical Guidebook				Page 30