I have three offerings in my area whose owners will let me test them before buying. Gigabyte 1070 Tİ Windforce OC ($280), MSI Armor 1070 ($250) and EVGA FTW 1070 ($250) - I'm not in the USA atm. First two have about a year of warranty left, EVGA has 16 months. I never owned a gigabyte component so I'm leaning towards 1070s although the other is a TI. I game on 1440p mainly for single player games (rpg, fps). I have an old i7 4790k lga 1150 system and had a 980ti which I sold some time ago, so a 5-10 fps on top of my old gpu's output will be sufficient for me. Do you think 1070 will be enough? All of the sellers say the GPUS were used for gaming only (no mining). Any suggestions on checking the cards out other than visual inspection? Furmark, Unigine? I never stress tested a card before so I'll have to research on how to before I meet the sellers. Thanks!