upgrade advice, better buy Gpu or upgrade my Mobo, cpu, etc

[Cloudrake]

hi guys, i want to ask about something, i planning to upgrade my PC but im not sure its better to buy a Gpu or entirely upgrade my pc but Gpu remain the same so here its my current Pc rig

Cpu: i5 4440 3,1Ghz
Gpu: Inno3d GTX 970 4 gb
Mobo: Asus H87M-E
Ram: DDR3 Kingston Hyperx 1600Mhz 16Gb
Hdd: WD blue 1TB (i have two)
monitor : 1920x1080 60hz

and i will upgrade it to

Cpu: i7 7700k 4,2Ghz
Gpu: Inno3d GTX 970 4 gb
Mobo: MSI Z270 M5
Ram: DDR4 3200Mhz G.skill Trident Z 16Gb
Hdd: WD blue 1 TB (two)
Sdd: 120Gb samsung 750 evo (for OS and apps) + 250Gb samsung M.2 850 Evo (for games)
Mon: 1920x1080 60hz

that upgrade will cost around $1000
so im not sure better to upgrade or just buy new Gpu GTX 1080
please help me guys, im know this kinda lame question
but i need help here
Please kindly give me an opinion which is better
Thanks Before

 

[AbhiTheBoss]

If you buy anything over a GTX 1060 with the i5 4440 you will be bottlenecked at 1080p as this resolution is heavily CPU bound. Your current 970 will perform a little worse than the 1060. Buying a 1070 or higher along with an older i5 is only worthwhile if you have an overclockable CPU. However, I would recommend upgrading to an i5 7600k, selling your 970 and buying a 1070 or a 1080.

 

[AbhiTheBoss]

Here is an approximate cost of the build without selling off your 970
https://pcpartpicker.com/list/LMY9vV

 

[Cloudrake]

If you buy anything over a GTX 1060 with the i5 4440 you will be bottlenecked at 1080p as this resolution is heavily CPU bound. Your current 970 will perform a little worse than the 1060. Buying a 1070 or higher along with an older i5 is only worthwhile if you have an overclockable CPU. However, I would recommend upgrading to an i5 7600k, selling your 970 and buying a 1070 or a 1080.

Here is an approximate cost of the build without selling off your 970
https://pcpartpicker.com/list/LMY9vV

hi abhitheboss thanks for the advice,
yes i'm thinking the same way too, my CPU will be bottlenecked the GPU and thats why i'm planning to upgrade my CPU along with the other parts, but i'll gain a little FPS by doing so, because my GPU will remain the same
and that is why I'm so confuse about it.
spend almost $1000 but just gain a little performance and in my place everything still expensive and a little hard to found some PC hardware in here, that's why that upgrade almost cost $1000 , and i read a review for every part before I'm sure about it.
and yeah i5 7600k is one my option too because in my place
i5 7600k cost only $274 while
i7 7700k cost $389
and yeah i'm planning to sell my GTX 970 to buy new GPU 1070 or higher
but i'll do that later after i have enough savings because My GPU still new, i think about 1 year ago i bought it

and about the PC build that you recommended i'll try to look for the parts if its available,thanks again

 

[AbhiTheBoss]

You are welcome!