I don't disagree with you, as I said "probably the right decision", I'm just suggesting the reviews are studied so an informed decision can be made. In addition, to aid with that process, I posted the pros and cons article.
 

Haswell is a lot more hot than Ivy Bridge. About 15 °C hotter at the same clock speed.

 
Really, that much?

 

Ivy Bridge-E overclocks so much better so that he'll end up getting better performance overall,

 

 

As the review I posted mentioned. 1 in 15 4770K's achieve 4.7 GHz. While approximately 1 in 5 Ivy E 4820's achieve 4.7 GHz. So you stand more chance of being lucky in the silicone lottery, but the average Ivy E won't achieve 4.7 GHz.

 

I think maybe time will tell in regard to the overclocks the average 4820 will achieve. If only 20% achieve 4.7, I'm guessing the average chip will be more like 4.5.

 

Something else that should be considered, is the capabilities of a delidded 4770k. If a given purchaser is prepared to do so, 4.7-4.8 is pretty much assured.

Guys thank you so much for your input! and special thanks to 'ChaoticBeauty'!

 

At the end I went with 4820 and do not regret it for a single moment. It smoothly over clocked to 4.7 without excessive temperature or voltage. Temp around 37c and voltage 1.44v (both within recommended factory limits). I am sure I can stress it further to 5Ghz if I need to.

 

The overclock has massively increased my FSX frame rate and I am absolutely delighted that I chose the right hardware.

 

Just a quick question I am getting 1600GHZ from my RAM although it should be 2400GHZ….any suggestion or tutorial how I can increase my bass speed?

Ivy bridge:

 

-Runs way cooler.

-Overclocks easier and higher than a Haswell. 

 

My 2600K is @ 4.6ghz and runs FSX at 30FPS flat eccept in cases of extreme overcast, and add-on airports. 

Sorry, the Haswell is the King.

Have à 2011 based on Asus R4BE and 4960X,4930K,4820K

Test them in fsx @4.9 mem2800mhz cl10 the Haswell is faster @4.6

 

Waiting to get à couple of 4790k and 4690k CPUs and some Z97 boards.

 

I have à quite big bench libarary today 775,1156,1366,1155,1150,2011,am3,am3+, fm2.

 

Running the sim on a 4670k @5.0 , gigabyte Z87mobo 2666mhz cl9 mems and 780TI.

That gives me the best performance today,but it can change fast.

Ivy bridge:

 

 

 

-Runs way cooler.

 

-Overclocks easier and higher than a Haswell.

 

 

 

 

Except that Ivy Bridge has a slower architecture than Haswell!

 

Haswell overclocked less, matches Ivy Bridge.

 

And not all Ivy Bridge CPU's overclock easier... mine for example does not.

When Haswell releases a CPU that overclocks as easy and as high as an Ivy bridge I will definately purchase a new CPU/motherboard. 

Enjoy your performance boost! Glad it worked out well for you.

Here is a Aida64 fpu test with my 4670K @5.0ghz , WC cooled D5 and EK cpu block.

CPU NOT DELIDD