Is my PSU Dying?

Sorry to say, but you are wasting your thermal compound. As air, or any other gas, is a terrible thermal conductor, thermal compound are used to remove all air between the CPU and the heat sink. The thin it is, the better is the heat conduction between CPU and the heat sink

So true the compound is intended to fill in the microsocopic depressions and scratches left by the manufacturing surface.

My own personal way of applying it is to clean the two surfaces then prepare with the Arctic Silver products here (a cleaner and a preparation solution) Arctic Silver Incorporated - ArctiClean then apply the Arctic Silver compound Arctic Silver Incorporated - Arctic Silver 5 with my index finger covered with a vinyl glove so that the compound is slightly warmed and thinly and evenly spread onto each surface and into the microscopic faults using a circular motion this avoids contaminating the surfaces with anything from a spreader or bare fingers - then apply a rice grain sized spot of Arctic Silver compound in the centre of the CPU surface and assemble the cooling system. The heat generated from the CPU powering up then "bleeds" that spot of compound across the two surfaces.

Have used this method for years and have had no issues. The Arctic Silver stuff may not be the cheapest but I believe it to be the best because of the silver content which is the most efficient metal at conducting thermal energy.

Yes they call that lapping but it still will not get the tiniest of imperfections out of any metal surface. On the issue of Arctic Silver it is as good as any other and from numerous discussions on this site about compounds the result is there is no ideal one. There has never been any agreement on this topic since I have been a member and I have read of some truly peculiar ways of applying compound. There are those really expensive metallic compounds that can be used only once but out of my price range I am afraid.

One has to remember that the heat produced by the silicon chip is transferred through a much smaller surface area to the heat spreader and thereby it is down to the transferring properties of that heat spreader to dissipate that heat to the cooler surface. I do have many older CPU's I have taken out that have pure copper heat spreaders but can you imagine for one minute they will revert back to that material when they can produce heat spreaders that have a far less efficient transfer rated material because of the cost??

Again this is a very well worn topic and there will never be any agreement on what is best and what is not.

Of course their are many compounds used and many methods used also. Their are all kinds of test done and charts and graphs all over the net.
Thorough the years many of us have tried many compounds and methods.

Myself, I have never found much temp difference in compounds if they are applied properly.
All lapping did for me was get my 4 cores to run temps closer to each other. Which is good.
No I did not keep all the specs on the changes so I could quote them here.

For me and I believe for 99.9% of users this will would as good as any and is what I use.

Arctic Silver® 5

This little tutorial method will work just great.
Just pick what brand of cpu you have and then which exact cpu you are using.

Arctic Silver Incorporated - Route to Product Instructions for Arctic Silver 5

If done correctly and with the proper mounting of a proper working cooler you still have a heat problem, it lies somewhere else.

The system in (My System Specs) get the compound changed about once a year because that is when I flush the cooling system. Can't hurt.

My older system with a AIO liquid cooler I change the compound about ever two years.
But not because it is running with a temp problem. It's more like a what the hell, why not. Can't hurt.

If I found a new compound that worked a lot better than Arctic Silver® 5 I would use it. The hell with the cost.
With 14 fans, 2 radiators and 2 pumps what's another few dollars for a better compound. Compound is about the cheapest thing one can buy to improve cooling.

I also use Arctic Silver 5 on my air cooled video card in my older system.

Yep Layback as we both know this topic has been a hotly contested issue for many years and frankly is as monotonous as it always has been.

Like you I I have stuck with Arctic Silver using my method with no problems and in fact I have used just about all the brands there are except the melt in metallic one and they have included such things as diamond based and ceramic based compounds and as you and I know a lot of problems arise when people get sloppy when applying compound or simply have no idea of just what to do.

The other thing that comes to mind is of course a lot of the cooling can depend on how well the silicon chip is in contact inside the lid of the CPU (heatsink) and again there have been a lot of those who have tried de -lidding the CPU to renew the compound between the chip and the underside of that heatsink the manufacturer Intel or AMD have installed themselves and I have yet to hear that that method has made any appreciable improvement in the cooling of the CPU.

In fact gain the cooling has more to do with than just the compound such as the type of liquid used in many those liquid systems and the efficiency of the cooling rad in air cooled systems which usually being made of aluminium means that the heat transfer is just not that good. See this chart for silver copper and aluminium for example.
Thermal Conductivity of Metals

Well... checked voltage numbers in HWinfo... everything seems normal... no abnormal numbers or anything according to the program and the examples you give me.

Also, there has been 6 days since the PC was cleaned and changed the thermal compund... nothing, nada... not even a tiny hiccup... I swear to God te weirdest things happen to me XD... I'll continue montoring the computer...

Thanks a lot for all your help, at least, it seems the PSU is not dying :P

Yes I know westom but there is more info in that link with the HW Info stuff and yes I always recheck with a digital meter if I am still suspect of what HW is showing me - I just find it a really quick and useful tool and I think if you go through the components listings there is even more info than your average rocket scientist could understand - I know it is not the be all and end all.