New build advice

[wookiee87]

Hi all as the title says i'm looking to upgrade my current rig, hopefully if the price is right on nvidias up and comming gaming gpu's, i'm looking to get two for epic sli 1440p maxed out gaming.
i was wondering if anyone could advise me if i should shelf my 8600k rig and go for a 7900x instead, i'm looking at the 7900x as it has 44 pcie lanes which will be enough for both new gpus to run at native 16 each, plus i have a m.2 to use as well, i looked at threadripper but it's sinlge thread score is lower than intel's, i manly plan to game, i'm not into multitasking which the threadripper seems to excell in.

would i need to upgrade my curent cpu to 8700k/8086k if i were to keep it and drop two new cards in, i know i'd have to update my psu 850w i have would be pushing it as i've overclocked all my cpu to the magic 5ghz

or am i being a noob and my 8600k will be enough to run 2 cards and a m.2 and be fast enought for no botleneck to occour (i am aware on z370 running two cards will reduce pcie lanes to 8x each, hopefully using a m.2 will use the pcie lanes on the mobo and not the cpu)

i will have around 5k to spend soon, any help would be welcomed

 

[wookiee87]

i currently have a delidded 8600k at 5ghz with quad chanel 3600mhz ram on a asus hero x z370, custom watercooling and a gtx 1080ti ftw3 (stock) under water, i know my self what i have is way op'd but hell its been soo long since last upgrade i did, if the price is right i may get 2 of nvidias next gen gpu's, a 1k psu.
i'll keep both cards until ek relase waterblocks and get the whole thing fully watercooled again
i own a S2716DG 27" from dell and atm i can hit around 105 to 120fps in most games maxed out settings at 1440p, i know the moniter can run at 144hz but i havent been anble to hit that at 1440p res.

i'm tempted by amd but it's sligle thred perfomace needs to improve to make it a viable option, i know most games still dont use loades of cores instead favoring raw core speed instead where intel wins

in regard to pcie bandwith turing arcatecture could be a whole other ball game thats why i sugested the 7900x, a good mix of single therad performance and the all important pcie lanes (44)