NVIDIA Quadro FX 4500 512MB DDR3 PCIe | classicVGA
Amazon.com: NVIDIA Quadro FX 580 by PNY 512MB GDDR3 PCI Express Gen 2 x16 DVI-I DL and Dual DisplayPort OpenGL, DirectX, CUDA and OpenCL Profesional Graphics Board, VCQFX580-PCIE-PB : Electronics
Dell 512MB Nvidia Quadro FX 380 CHJ39 Video Graphics Card (Certified Refurbished) - Walmart.com