according to this page http://www.pcper.com/article.php?aid=666 ,
i would dare to say, yes, drives are interchangeble. theyre both SATA connectors. anyways, if your specifications match those stated in post above, i would say, you have software problem. SSD drives are freaking fast. much faster then any old fashioned HDD's. try to do scandisk, defrag, or whatever your OS offers you to speed up booting time.