Cheapest 2GB DDR2 SO-DIMM Memory Upgrades for Laptops, Netbooks

Looking for a cheap 2GB DDR2 SO-DIMM memory module for laptop or netbook RAM upgrade? The cheapest I have found is Crucial’s Rendition 2GB RM25664AC667 at 667MHz for $37.99 via Newegg.

The Rendition RM25664AC667 is followed by the Rendition 800MHz RM25664AC800 for $38.99 (Newegg), the G.SKILL 667MHz F2-5300CL5S-2GBSQ for $38.99 (Newegg), PNY Optima 667MHz MN2048SD2-667 priced at $39.99 (Newegg), and the Crucial 667MHz CT25664AC667 for $40.99 (Newegg).

Using a single 2GB module instead of 2 x 1GB in laptops leaves one SO-DIMM slot free for future upgrades. On the other side, netbooks usually come with 1GB RAM and a single memory slot, so using a single 2GB stick is the only way to upgrade to 2GB.

Please note that newer laptops and netbooks have DDR3 memory slots, which are not compatible with DDR2 modules.