well my fan on my video card ( nvidia ti4600 to be exact ) had been making super loud noises for the past year or so, finally broke, i need to replace it, its underneath a heat sink, never done something like this before, just need some advice, where can i buy one and whats a good one to buy for this card? or should i just replace the card all together, and if so, whats a good all in one multimedia card that also has video in and out?