sam1911 :
skurtov :
just go with a 3570k, it has more then horsepower than you're honestly going to need. Save your money and just buy: a better graphics card, or a solid state drive or more RAM. That will compensate for any performance differences between a Haswell or that Sandy Bridge.
currently using Gtx 650 ti but I want a processor for heavy multitasking ,gaming , rendering 3D & video editing at the same time
do you think that i5 will manage but i have waited so long for haswell
The I5 not being able to handle the multitasking and gaming? Please, that chip gives my 8350 a run for it's money and I have a whopping 8 cores. The processors at the price ranges you're talking about, $200-250
has more then enough for what you want, I'd save the money you have by not buying Haswell, and instead get yourself a better graphics card like a Radeon 7870, because THAT is what you need more than a Haswell. The 650Ti you're using is too slow and will be the processors bottleneck both with the 3570k and the 4770k making it pointless to get a processor that essentially has to wait for the graphics card to process the instructions sent to it because it's slower than what is being fed to it. Plus, the performance of your Haswell chip, all other factors held equal, is incremental over the 3570k, the amount you save from not buying a Haswell can help you save enough money to buy more RAM for example or a Solid State Drive in addition to your graphics card. IF you combine all three upgrades (graphics card, SSD, and/or RAM), all other things being held constant, the 3570k will outperform the 4770k using your legacy parts.
But, the caveat here is budget, if in the end you have a tight budget constraint and want to maximize performance over the life of the computer, get yourself the 3570K and you'll be thrilled.
Now, if let's say that your budget is huge, allowing the 4770k, with more RAM, an SSD, and a new graphics card upgrade, then by all means, if performance you seek, it will be better going with the Haswell.
But other than that, I can't see it being a practical choice over all.