4GB Total. 2 Pieces of  2GB 256M X 64 Non-ECC 800MHz PC2-6400 240-pin Unbuffered DIMM (DDR2, 1.8V, CL5, Gold Leads) .

WILL WORK IN 800MHZ SYSTEMS ONLY. PLEASE CHECK BEFORE BUYING.

Third Party Equivalent to Lenovo Part Number:

 41U2978

2 X 2GB of dual channel memory - we will ship identical memory modules.

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

Support: Email us through eBay or call us Toll Free at  1-800-634-4719.

Payments: We prefer Paypal. If you wish to pay by credit card please call us Toll Free at 1-800-634-4719.

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 :

Lenovo ThinkCentre M57 9172, 9174, 9181