Mondoman :
Not sure why you think the new coolers perform worse. As long as there aren't any more problems with good even pressure over the middle for good contact with the heat spreader, I would think that the new coolers are better.
The reason I believe it to be less effective is the rough mating surface this new style presents to the CPU.
one less additional plate between the CPU and fins eliminates one interface where heat conduction might not be optimal. My guess is that the chrome-plated metal plate in the old cooler also doesn't conduct heat quite as well as the aluminum of the current one.
I think I need to clarify this. That chrome bracket is not a thermal barrier, at least not in the sense that you imply. It has a punched out center, and is interference-fitted around that highly polished aluminum slug which lies under the thermal paste.
That cylindrical aluminum slug is driven all the way through the heatsink as you can see in the following pic displaying the top of one of these coolers with the fan removed:
In the new version, not only is the bracket gone, that slug of aluminum is also gone. The cooler is now a single chunk of aluminum, allowing Intel (or whoever makes these heatsinks) to forgo the time consuming and more expensive process of the performing the interference fit. I'm not necessarily saddened by any of this, as like you said, a single chunk of aluminum in theory should be a better thermal conductor than two pieces of aluminum stuck together, even if the two pieces are sandwiched together as tightly as this slug to its radial fin housing. What does erk me though is that the bottom of the heatsink is no longer a nice, smooth, polished surface. It simply looks crude. Some home-brewed heatsink lapping of these new versions might prove to be highly beneficial.
One positive aspect I see out of this new version? Without the steel plate in the way, the fan should be able to push air more effectively through the heatsink, as the passing air no longer gets coldcocked by that steel plate blocking the underside exit of approximately a quarter of the heatsink's finned area, theoretically allowing more airflow, less turbulence and quieter operation. This may make the new version more efficient than the old, despite the lack of a smooth mating surface. although, without testing the two , we won't really know.
There is also another possible negative of this new style cooler. Those housings encasing the push pins in the plastic fan look like a potential point of failure, especially during installation, where one has to typically push the poo out of those pins to get them to snap down securely. I can imagine some ham-fisted knuckle dragger breaking them clean off the fan because he pushed on 'em too hard.
One thing is for sure: this new version is a much simpler, cheaper to make design, and almost assuredly a bit lighter, saving Intel even more money on freight costs.
In case you were wondering, the title of the thread is more for a bit of sensationalism than about how I actually feel about the redesign. I find that most of the kiddies in the forum are much more likely to read and respond to a thread when the title is intriguing, rather than when the titles are the dull, matter-of-fact headings I normally make for my threads, and I really wanted to get some interaction and discussion of ideas about this topic. It's also a bit of a pun. If the removal of that steel plate actually does improve airflow, then perhaps Intel's boxed coolers now really do have 20% more "suck factor"
. I thank you all for your thoughts and comments (well, except Dragonsprayer, who was kinda off in his own conversation). It was nice to have a thread for once that didn't revolve around "OMG my CPU is on fire!!!11!!", "Check my built", "CPU running slow" or the ever-popular "e8400 vs Q6600". Thanks guys.
Joe