8GB (4GBx2) Team High Performance Memory RAM Upgrade For Dell Dimension E520 XPS Generation 5. The Memory Kit comes with Life Time Warranty. at Amazon.com
Dell Dimension E521 MT AMD Athlon 3600+ 1.9GHz 1GB RAM No HDD No OS
OFFTEK 2GB Replacement Memory RAM Upgrade for Dell Dimension E520 (DM061) (DDR2-5300 - Non-ECC) Desktop Memory at Amazon.com