Is this a joke??????? Heh heh heh....... I'm really sorry to laugh here. but it is definitely funny. I think that is the heatsink you use on Video ram.
I do hope that you have not play any games with it so far. Because if you did, chances are that you damageed the GPU already. Before you spend your money to get the VGA Silencer, I will recommend you to reinstall your original heat sink and fan onto your vid card. This is just to check if those lines and dots are still there. If they are, you will have to get a new vid card. If your vid card is operating like normal, then go ahead and order the VGA silencer.