I actually was a loyal AMD fan until I made my switch to Intel with the i7-2700k.

Well AMD quality has gone down which made me switch to that when I built another computer.

This is a great resource, especially from a gaming perspective, shows you how little has changed since the 2700K (5% best case). I'm still very happy with my 3770K.

NazcaC2
It would have been interesting if they included the 1366 chipset too.
Also, I'm still very happy with my stock i7 920.

They did, per se.  All Nehalem generation processors have the same IPC per core.  Since they included testing an i7-870-- granted, Lynnfield-- using only one graphics card made the extra PCIe lanes available in an X58 chipset moot.  Therefore, it covers the scenario of an i7-940 equivalent with a single graphics card.  Chipset wouldn't have made a difference.

The higher RAM bandwidth as a result of triple channel didn't impact every benchmark, since dual-channel 1600 in Haswell = triple-channel 1066 with Bloomfield.  None of the results were overclocked.

Like I said, the only thing that bugs me is they tested GPU-bound games, making all the results look the same as if Intel hasn't done anything lately.  It is misleading; if you want to see gains in CPU, look to CPU-bound results.  

Take Anandtech's review when haswell first appeared, they include more processor generations for comparison and at the bottom, they tested two games: Civ 5 in CPU-bound and Dirt 3 in GPU-bound.  I see a difference, so why didn't techspot show that?  It is called bias.

With this performance people no reason to think upgrade before 4-5 years with any i7.
Much better is investment in graphic cards and bigger SSD. 
I didn't want to miss so good chance for cheap 6 core, but I could stay on i7-3770K 2 years more. 
OK about 1/3 of price I payed for X99 I will refund when I sell Z77 platform. 
i7-3770K is so small compare with i7-5820K...small  but powerful, special on 4.5GHz.
I see improvements but most in situation with extraction and unrar folders, mostly because quad channel and faster memory...
On eye I would say improvements are 25-30%. But that is not really important do you wait 1min or 2min to extract something when all of them give same fps in games. Now long time I will not to spend money on memory, motherboard and processor and next RIG will be Mini ITX or Micro ATX.
This is probably my goodbye with huge E-ATX rigs... In future strongest single GeForce in mini rigs.