NVIDIA and AMD have competed in graphics card development eversince AMD bought ATI. Transistor technology became smaller, faster and more efficient. Only a few years ago, NVIDIA released their first card that was capable of outputting a 3D signal to a screen. This signal was (and still is) clocked at 120Hz, allowing with the use of shutter glasses, to send stereoscopic images to each eye at 60Hz. This creates the illusion of depth and thus 3D. NVIDIA calls their technology 3D Vision, which requires the 3D Vision Kit that synchronises the shutter glasses via an infra-red signal. AMD tried to compete against this with HD3D, that would not necessarily require the user to have a specific screen that is HD3D ready, but simply offers a 3D feature. This made HD3D cheaper but not as nice as NVIDEA's alternative. Since I am a fan of 3D and always wanted to play games in 3D (especially Battlefield 3), with help from my friend, we choose some hardware and upgraded my gaming computer.