Finally found a site with the answer to my 750ti concerns. So, does brand matter? Gigabyte, EVGA, and Zotac make the Geoforce 750ti. All need the Nvidia drivers but is anyone here using a 750ti made by a company other than Nvidia in a mid 2010 Mac Pro5,1 running Yosemite or El Capitan?

1. Evga Geforce Gtx 750 Ti
2. Evga Geforce Gtx 750 Ti Drivers For Mac Pro

Evga Geforce Gtx 750 Ti

Evga Geforce Gtx 750 Ti Drivers For Mac Pro

Also,with a dual card setup is anyone running SLI/Crossfire with this card or will Yosemite/El Capitan utilize both via software? Curious and answers here will determine if I buy or just get another sapphire Radeon HD 7970. Thanks.