But I want it!
All I heard from those quotes was "Waaaah! I want, I want, I want! Mommy, they won't give me what I want!" We all know that virtually all manufacturers, whether they make CPUs, batteries, or automobiles, will advertise their optimum performance. Having said that, you can't blame a processor, or even a server, for your poor performance without due diligence. You better be damn sure you've ruled out every other possibility. His quotes remind me of the type of idiots who complain that upgrading the memory in their system didn't make it faster when their processor is a Celeron-333.
As for the energy requirements of servers, there's not a hell of a lot server builders can do other than using low-power parts and more efficient power supplies. Even for those builders who design their own motherboards, they don't have a lot of room to work with. Most of a server's power usage comes from the processor. After that, you have the chipsets (north bridge and south bridge), various chips/controllers (network, video, storage, USB), memory modules (let's not forget that each DIMM uses around 2-3W), and power for the USB ports (must provide 2.5W for each port). Then you have storage media and backplanes. Let's not forget the fans which, in all servers I've seen, add considerably to the power usage due to the high RPM rate and the number of fans used. And, of course, there's the inefficiency of AC/DC conversion. In reality, server makers have little control over power usage because they don't make most of the parts. It's the various component makers who need to cut their power requirements.
"'I am not sure why the server vendors have failed us,' Heiliger added when asked why Facebook wasn't getting the machines it really wanted to buy."
I could be going out on a limb here, but I would suggest it's because his expectations were too high.