SlipySlop

And about the price that is acceptable for me, it is around 700-750 $ top and i mean to play newer games on the market too (like GTA5, the Witcher 3, etc.)

Well thank you for your responce. So just to make some things more clearer, when i said that the price isn't an issue I meant the price diffrence betwen the GPUs that i choose, and thank you for telling me, that the case is not big enough, so i wonder if this case is big enough: http://www.amazon.com/dp/B00MNSFBQU/ref=wl_it_dp_o_pC_nS_ttl?_encoding=UTF8&colid=24BH2BBQNFJIW&coliid=I1XZ5NYNR9XY0Y&psc=1

So I am building new pc and so it happens that its my first build. I have chosen almost all of the parts that I need, but I am in dilema about GPU. I am choosing between http://www.amazon.com/gp/product/B00SC6HAS4colid=24BH2BBQNFJIW&coliid=I2PWF5Q60LPF42&psc=1&ref_=wl_it_dp_o_pC_nS_ttl and this GPU http://www.amazon.com/gp/product/B00UOYQ9N4?colid=24BH2BBQNFJIW&coliid=I2YPINFA0O01QZ&psc=1&ref_=wl_it_dp_o_pC_nS_ttl. MONEY ISN'T AN ISSUE I also dont know how strong should my power suply should be. My other parts : RAM: https://www.amazon.com/dp/B006WAGGUK/ref=wl_it_dp_o_pC_nS_ttl?_encoding=UTF8&colid=24BH2BBQNFJIW&coliid=I2VIVTQSB8EBUO&psc=1 CPU: https://www.amazon.com/dp/B00JIJUBAS/ref=wl_it_dp_o_pC_nS_ttl?_encoding=UTF8&colid=24BH2BBQNFJIW&coliid=I1CX8BNK61YIMP HARD DRIVE: https://www.amazon.com/dp/B0088PUEPK/ref=wl_it_dp_o_pC_nS_ttl?_encoding=UTF8&colid=24BH2BBQNFJIW&coliid=I2M9M1XOB2YL4S MOTHER BOARD: http://www.amazon.com/ASRock-DDR3-Motherboard-H97-ANNIVERSARY/dp/B00N9399TS/ref=sr_1_1?ie=UTF8&qid=1435750933&sr=8-1&keywords=ASRock+H97+Anniversary+ATX+LGA1150 CASE: https://www.amazon.com/dp/B00PWML7GM/ref=wl_it_dp_o_pC_nS_ttl?_encoding=UTF8&colid=24BH2BBQNFJIW&coliid=I3U5MXU2R7HLKT&psc=1 THANK YOU FOR YOUR HELP. (PS. If I forgot to mention some parts, please remind me and I will update my list) THANK YOU AGAIN