erikeriok1

I know this but struck a sweet deal on the asus one so i just have to get someone to let me borrow their cpu

well, my choise would be the strix, but that's party personal prefference

I want 144hz and 1440p. Any recommendations? pref 27 inch

since your budget is so low (~ 320 euros) i would go AMD and unfortunately not current generation!

Question is, do you have DDR4 RAM stikcs? or are you on DDR3?
 
For DDR4 you can go for something like:

https://www.amazon.de/AMD-Ryzen-3-1200-3-1GHz/dp/B0741DN383/ref=sr_1_6?ie=UTF8&qid=1527408684&sr=8-6&keywords=amd+ryzen = 91 EUR
https://www.amazon.de/MSI-B350M-PRO-VDH-Sockel-Mainboard/dp/B06Y47ZND5/ref=pd_bxgy_147_img_2?_encoding=UTF8&psc=1&refRID=NZW9N58X5NKWJVB4M458 = 86 EUR
https://www.amazon.de/MSI-560-AERO-ITX-Afterburner/dp/B0728B1MLD/ref=sr_1_1?s=computers&ie=UTF8&qid=1527409813&sr=1-1&keywords=MSI+Gaming+Radeon+RX+560 = 168 EUR 
 
That's 91+86+168 = 345 EUR. Sorry that i increased ur budget by 25 euros, but seriously finding a GPU for the remaining 140 euros was hell and even i DONT reccomend that one, but thats a low budget one.. 

I would tell you to at least got for an MSI R9 380 Gaming 4G (its either 380 or 380X) but its more expensive, if your friend can spare something more.

Well then, im @ work atm, so whenI ill go back home at night, ill have another go for you!! Could be even easier for ddr3 since its older!!