Power Supply Quality

So a while ago my CX500 took itself out in my rig, and since I was leaving for E3 the next day, I had to get what I could. Without doing any research on the trip I stopped by a Fry's on the way home from San Jose where I flew in and bough a Thermaltake TR2 700w Cable Management. Now I know the old TR2 series was horrendous but I have a newer model, so I was looking for some feedback on this. Im not going to be able to replace it, but I would like to know if it is at least adequate. I got it for cheaper than a TX650 would have been online.
Note it is this model http://www.thermaltakeusa.com/ttWWW/Product.aspx?S=1172&ID=2129#Tab2
 
Thats pretty much what I was assuming, if I ever crossfire or SLI I would be upgrading the psu to probably and XFX model anyway. Since thermaltake claims it has an efficiency of 75% I assume it will get me by. Would you say it could handle a 7950? Because its either that or a 7850/7870 for my graphics upgrade.