Add more memory. The Lenovo 8GB DDR4 2666 M Hz ECC RDIMM memory will upgrade your systems performance & enhance its ability to run more programs simultaneously. Designed For Lenovo Think Station P520 30BE, 30BF, 30BQ Lenovo Think Station P520c 30BX, 30BY Lenovo Think Station P720 30BA, 30BB Lenovo Think Station P920 30BC, 30BD