Anything can be defective! This is an old post, replying in case anyone has a similar question down the road. True, a heatsink a chunk or metal,but to properly work the base must be flat/smooth.
Three of the edges of my phantek curved in most of the the fourth edge curved out so only left and right edges touch the cpu. The gap was small but visible when I put on the window sill i.e a low, elongated, (scalene) triangle of light shined though the bottom. Amazon charged $12 less for the blue version I got, which was the last one they had ($77 vs $89 then).
I didnt want to pay $12 more for a non defective version, and I should have to lap a brand new heatsink to make it work as advertised. Im sure the phanteks are great and this one I got was a fluke. The cryorig turned out perfect for my needs.
I got a 800mhz overclock I wanted, bellow 60°C I wanted
Hyper 212+ was $25
PH-TC14PE was $77
H5 Ultimate was $46
This means the H5 gets about 80%* of the Phanteks performance increase but the
Cryorig costs $21 more than the 212
Phantek costs $52 more than the 212
(*compared to the 212 if vs a non defective phantek)
The Cryorig H5 ultimate is really amazing, in my experience heatsink $26-$70 are as good or only slightly better than the hyper 212. Its once you hit the cost of the chunky phanteks and noctunas that you get a big boost. H5 is the first ive seen where the permanency increase is on par with the price increase.
Karadjgne :
Impossible for a heatsink to be defective. It's a solid chunk of aluminium. If it's mounted correctly, that Phanteks heatsink is large enough to act passively at stock speeds and still keep the cpu under @70°C. With fans working correctly oriented, your cpu should idle in the mid 30's and max in the mid 60's. (depending on ambient temps) . The only thing I can further think of other than incorrect mounting, is you are using prime95 version newer than 26.6, which will use avx and a few other instructions, well over normal usage and drive temps to unrealistic hights.