Just like the title say's really my rig was over due a clean for awhile but I got around to it last week CPU and motherboard temps drops back to "normal" but my graphics card just doesn't know what to do, since it's been cleaned the temps haven't been stable at all, temps raise and lower one day to the next. Your probably think that's pretty normal which yes it can be but that's usually within just a couple of degree's which isn't the case for me, for example yesterday was a somewhat warmer day in general and yet my card idle'd around 30 - 32 (which is around normal for when I'm doing the usual thing's) which isn't the case today it's a little cooler and my card is reaching 38 - 39. I can't see why cleaning it wouldn't of helped? I've done it many of times without issue's. FYI: I've not removed the heatsink for awhile, the last time was around a year ago when I applied some MX-4 but that should be fine for awhile longer also checked for dust build up in places an the likes of but no such problem there.