Amazon.com: Valley Of The Sun Original Graphics Video Card GPU Replacement for HP EliteBook 8540W 8560W 8560P 8570W Mobile Workstation Laptop, AMD Radeon HD 6770M GDDR5 1GB, MXM VGA Board Repair Parts :
Amazon.com: ATI Radeon HD 4550 Video Card : Electronics
Amazon.com: VisionTek Radeon HD 5570 1GB DDR3 SFF Graphics Card, 4 Port VHDCI to HDMI, Included Full-Height Bracket (900901) : Electronics