Or would an i5 4670K work just as good?

The price range between the too is quite large, so what exactly would I be missing out on if I grab the i5?

Here is what I am building.

Intel Core i7-4770K 3.5GHz Quad-Core Processor
Corsair H80i 77.0 CFM Liquid CPU Cooler
Asus MAXIMUS VI FORMULA ATX LGA1150 Motherboard
Corsair Vengeance 8GB (2 x 4GB) DDR3-1600 Memory
Samsung 840 Pro Series 128GB 2.5" Solid State Disk
EVGA GeForce GTX 780 3GB Video Card
NZXT H440 (White/Black) ATX Mid Tower Case
Corsair RM 650W 80+ Gold Certified Fully-Modular ATX Power Supply

I have the i5 4670K and it works just fine and dandy. It will clock itself up to 3.8GHz when under load so I don't even bother to overclock as I hate excessive fan noise. The only major difference between that and the i7 is hyperthreading, and you don't get any real benefit with that in FSX. Some people with deeper wallets may argue otherwise but in practical terms the i5 has much better dollar value for flightsimming than the i7. Why pay more?

I have the i5 4670K and it works just fine and dandy. It will clock itself up to 3.8GHz when under load so I don't even bother to overclock as I hate excessive fan noise. The only major difference between that and the i7 is hyperthreading, and you don't get any real benefit with that in FSX. Some people with deeper wallets may argue otherwise but in practical terms the i5 has much better dollar value for flightsimming than the i7. Why pay more?

Thanks for the reply. I think I will go with the i5, I am trying to budget. Sounds good!

Theoretically FSX likes the bigger cache provided by the 4770K.

 

What this equates to in real terms is open for debate.

 

The other point to remember, is that the i7 may have been binned as a faster chip, so you may have a theoretically better chance of a higher overclock than with an i5.

H100i outperforms the H80i in many aspects. I would recommend upgrading to H100i.