Intel soldered the CPU die to the integrated heat spreader
A picture making the rounds on the web shows what Intel's upcoming Core i7 5960X Haswell-E processor will look like if you have the nerve to pry off the integrated heat spreader (IHS). If you look close, you can see that beneath the adhesive layer that secures the IHS to the package is soldering from where Intel soldered the CPU die to the IHS with a strong epoxy. If you're an overclocker or otherwise concerned with temps, this a good sight to see.
Soldering the CPU die to the IHS offers better heat conductivity than filling the gap with thermal interface material (TIM), the latter of which is the route Intel took with its Core i7 3770K, 4770K,a nd 4790K processors, according to the folks at OCDrift.com .
While not game changing by any means, this is simply another reason to look forward to Haswell-E. Expected to launch this September, Haswell-E will coincide with Intel's X99 Express chipset and offer support DDR4 memory support.
As for the stripped down Core i7 5960X on display, earlier rumors suggest it will rock 8 cores, 16 threads, a 3GHz to 3.3GHz (Turbo Boost) clockspeed, 20MB of L3 cache, and a 140W TDP.