With the older cMP systems , all the factory installed video cards need maintenance now . At load , many GPUs will become too hot and will fail as their factory thermal paste becomes dry (too much or non-moist paste will also act like a thermal insulator, which is the opposite of what we require) . In some cases, the paste just evaporates away completely leading to an imminent failure . With higher end graphics cards , this can happen in as little as two years . All cards with Mac ROMs are expensive and used 5770 M.E. cards currently sell for around $200 . It is not difficult or costly to save these cards and prolong their operational life . Here is a step by step guide on how to save your valuable 5770 . A factory Mac Edition ATI 5770 Graphics Card with one Dual Link DVI and two mini DisplayPort connectors . Tools , Equipment and Materials Needed (all are static control friendly) : 1) Static Control Wrist Strap for grounding . 2) Black Stick . 3) Nitrile gloves (optional) . 4) Unused drip coffee filter , lint free . 5) Cotton applicators with wood stick . 6) 1 inch wide bristle paint brush , generic . 7) 1/4 inch wide , long handle bristle brush . Dick Blick brand . 8) P0 size Philips screw driver . 9) Arctic USB fan , with a long cable . 10) 91% or higher Isopropyl Alcohol . 11) Surgical pliers , stainless . 12) AS5 or MX-4 Thermal Paste , < 1 gram . coffee filter cotton applicator , with wood stick . our trusty black stick . one inch wide , bristle brush . 1/4 inch wide , bristle brush . surgical pliers , stainless steel . 91% + alcohol . P0 Philips screwdriver . USB fan , use with extension cable .