Well if you're going after the standard 8reference nvidia model) gtx 680 there's no difference but the customer's service each company can provide. I've a gtx 680 from MSI and it's just as good as a gigabyte, evga, etc. If maybe you are planning in getting a non reference card I'd advice you the GTX 680 twinfrozr from MSI, is almost as expensive as the reference one but it's way more cooler (I didn't get mine for like 2 days, I should have waited lol) . Regards
Thats good to know thanks. What do you mean by "non reference card" and "reference card"? whats the difference?