Newegg offers the GIGABYTE Radeon R9 290X 4GB 512-bit GDDR5 PCI Express 3.0 Video Card, model no. GV-R929XOC-4GD, for $599.99 with free shipping. (Amazon charges the same.) That's the lowest total price we could find by $11. (Most merchants charge $675 or more.) It features a 1040MHz core clock speed, 5000MHz memory clock speed, DirectX 11.2 and OpenGL 4.3 support, HDMI output, DisplayPort output, and two DVI outputs.