There are three tiers of SSD's offered by Eluktronics. The Eluktro performance series SSD is designed as a great budget drive ready for consistent and daily use. Utilizing minimal over-provisioning provides the largest capacity options without sacrificing reliability. The Eluktro Pro Performance line offers premium quality synchronous performance MLC NAND. The Eluktro Pro-X Performance line is the highest tier of performing drives ready to unleash the true potential of your PC. Whichever you choose, the Eluktronics line-up will prove that not all SSD drives are the same!