Appreciate your input EmishOrc but having read the thread you should already be aware that removing the side of the case has helped with the cooling and that dan7brit is now waiting on a new PSU, nothing more to be done until the junk PSU has been swapped out.
If you check the Speccy report you will note that the memory controller reading is 1.672 V, in the case of a CPU that has an integrated memory controller the voltage should not exceed that of the CPU and for older MBs that have a Northbridge chip the voltage should not exceed or be below that of the Ram, 1.3V / 1.35V and 1.8V respectively.
Off topic here but in reply to the reply #31 of EmishOrc above;
If correctly applied and as long as the HS and cooling fan have not been removed or disturbed for some reason thermal paste will normally last the lifetime of the computer and/or the processor and should not need reapplying.
As for Arctic Silver being the best, it is what I always use but only because it is my preference and there are equally as good products out there.