Quote (Secksii @ Aug 6 2016 12:52am)

fully and semi modular are pretty much the same shit, just means the psu cables are detachable. So whatever cables you don't need, nn to have it dangle. Makes the build more neat, and better airflow since less things get in the way.
so fully means all cables are detachable, semi means all but 1 thick line that you need 100% of the time isn't detachable. non modular means none of the cables are detachable.

The GS model is made by seasonic, and gold efficiency but it's 650W so if you plan to crossfire/sli in the future, OC with a new build you may have to upgrade to a new PSU. No one knows the future, but if there happens to be some sort of badass CPU and/or GPU that uses a lot of power you may need to upgrade for more wattage. Kinda like few years ago, most people got 450-500w but now 550-650 is the norm spot.
The B2 model is made by superflower, and bronze efficiency but it's well made enough to perform close to silver efficiency. It's 850W so you won't have to worry about purchasing a new PSU in the future, at least for a really long time lol.

Quality wise, they're both godlike and both provide evga customer service so you can't go wrong with either one.

tl;dr if you are never going to overclock, or crossfire/sli etc. in the future, 650 is good, otherwise 850.

88r is a nice case for matx builds, only downside in the future would be restricting some of the CPU coolers and would have to purchase micro atx mobo's