Updgrading from Intel 2 Quad Core Q6600 to I7 or I5 (K-series)

[hnyb138]

I am currently running an Intel 2 Quad Core Q6600 chip on a ASUS IPIBL-LA Micro ATX motherboard. I been running it for a long time and I can run any game I have tossed at it but I am starting to see a slowdown in speed.
Running Windows 7 and 8 Gigs of Ram

I wanted to upgrade this set these set ups below what do you think?

•Motherboard is Gigabyte GA-Z97MX-GAMING LGA1150 micro ATX ($80 w/$10 rebate)
•Intel Chipset ?
o I5-4690K ($199.99)
o I7-4790K ($279.99)
o I7-5820K ($299.99)

I don’t know which chip to get what do you all think? If you recommend any other board I am all ears. I am looking for a gaming motherboard for my set up.
Thanks!!!

 

[RafaSimpsons]

The 8 GB's you're refering are from the old build? Because if they are, you can't use them on the newer mobos (DDR3).
And, while the first 2 CPU's are LGA 1150, the i7-5280k is LGA 2011-3, which requires the X99 chipset, a much more expensive path and not worth it unless you're budget-unlocked.
So, the best choice there would be a i7-4790k. Plus, don't forget to pair a good GPU with that i7, like a GTX 970 at least to take the full potential of your system.