Its a fact of life.

Theyreeasy to clean, but a few partslike the video cardmay require a deeper shining once in awhile.

How much itll make a difference depends on your level of dust, of course.

Their card didnt improve much, which is actually a good sign that they cleaned itbeforethings got rough.

Video Card Running Poorly?

Clean Your Video Card Cooler!| LinusTechTips