Samsung MZ-7TE120BW Internal SSD Flash Drive 840 Series EVO BASIC 2.5 "120GB SATA Grey (Personal Computers)
These SSDs are a good buy, but you need to update the BIOS to address the performance problem. This is annoying, but for that price, we can accept the additional work. In any case, it is a mistake in good faith from Samsung and one can forgive them.