Dual Core Pixel Processing power! Realize the power of tandem GPU processing on any PCI-E supporting mainboard with the SAPPHIRE HD3870 X2. Equipped with 2X ATI RADEON HD 3870 GPU, the SAPPHIRE HD3870 X2 turns the dreams of the adrenaline addicted gamer into a virtual reality of vivid worlds erupting with possibilities. The dual GPU processing power of the SAPPHIRE HD3870 X2 promises to awaken the senses and free the imagination from the shackles of PC hardware limitations as it affords the end user CrossFireX™ performance and over 1 TeraFLOPS of GPU Compute Power in a single card solution. The SAPPHIRE HD3870 X2 makes for a welcome addition to the family with its robust hardware offering such as: a staggering 512MB or 1GB of onboard memory, DirectX® 10, Shader Model 4 and OpenGL acceleration along with enhanced support for the Windows Vista™ 3D environment.