Hello, I am looking to buy graphics card with an Nvidia Geforce 560 Ti core. I have found this: http://www.amazon.com/EVGA-GeForce-GDDR5-PCI-Express-Graphics/dp/tech-data/B004K1EUWO/ref=de_a_smtd and http://www.amazon.com/EVGA-GeForce-PCI-Express-Graphics-01G-P3-1556-KR/dp/tech-data/B004R9OVE6/ref=de_a_smtd on Amazon. They are $100 difference, I was wondering how much less powerful will it be than the one that is more expensive? Is it fine getting the cheaper, or is it much worth spending an extra $100? This is for a gaming build by the way. Thanks