Hi. I'm asking this for my friend. He's planning on buying the MSI GTX 1070 Gaming X 8GB which is 560€, GTX 970 cards would be a bit over 300€. His current PC has a Radeon R9 270X with AMD FX-4350. Also, he's got a 60Hz 1080p monitor. Would it be worth it to buy the GTX 1070 or just go with GTX 970?