Microsoft has just announced their second quarter fiscal year 2016 results and the numbers are looking outstanding beating most estimates in all divisions.

One area where of healthy growth was with their Surface line bolstered by the Surface Pro 4 and Surface Book. The solid numbers were attained despite ongoing criticisms of stability and OS software issues.

The company reported $1.35 billion in revenue, which beats their previous record of $1.1 billion from the same time last year and more than doubled last quarter's $672 million number. That means coming off of the holiday season the Surface line exceeded previous sales although that is likely helped by the price bump of the Surface Pro 4 and the all-around high price tag of the Surface Book.

Questions remain about how long Microsoft can sustain that kind of sales push although a Surface 4 will likely arrive in the next few months to help keep momentum.

Regardless, these numbers speak volumes about Microsoft's success because if they had missed that billion-dollar mark, there would be some serious doubts about the sustainability of the product line.