So i have a Samsung 5500 LED HDMI 1.4 conection and a EVGA GTS 450 Graphics card Mini HDMI 1.4a. I'm connecting them with a Noga Net HDMI to Mini HDMI 1.3 cable and i get no video. The TV doesn't even show the cable in the menu.
Is this the wrong cable? Or is my graphics card Mini HDMI not working?
Bad signal on HDMI does not cause images to "get fuzzy", it causes loss of image altogether. If image is fuzzy it means something is doing re-scaling somewhere, check that the source's resolution is truly matched to the display's native resolution and that the display is not doing any re-scaling of its own for whatever reason.
Get your hands on a 1.4 cable and try that. I'm not sure if two 1.4 endpoints can easily talk over a 1.3 cable
Physically speaking, HDMI 1.0 and 1.4 have the exact same pinout so there is no mechanical or metallic continuity reason for HDMI 1.4 devices to fail to connect over older cables.
Depending on how long the cables are, the quality of connectors and the cable itself, signal integrity may become a problem. Over short distances such as the typical 3-6' in most AV setups it should still work unless there is something fundamentally wrong with the cable.