4GB Total. 4 Pieces of  1GB 128M X 64 Non-ECC 533MHz PC2-4200 240-pin Unbuffered DIMM (DDR2, 1.8V, CL5, Gold Leads) .

NEW, MADE WITH BRAND NAME CHIPS. Tested. We do not sell "OEM" memory which may be incompatible, unstable or prone to early failure.

Warranty: Lifetime

Memory expert since 1990. All parts are tested and guaranteed compatible.

No hassle exchanges.Brand name parts only- No unknown and overclocked parts.

Quick shipping.

Guaranteed and tested. 100% compatible with 800MHz versions of many systems including :

Compatible with :

Dell Dimension 5100, 5100C.