OFFTEK 8GB Replacement Memory RAM Upgrade for IBM-Lenovo ThinkPad W520 (Dual Core) (DDR3-12800) Laptop Memory at Amazon.com
Tuning the Lenovo T520 - Upgrading Memory and Installing an mSATA SSD • Helge Klein
Lenovo ThinkPad W520 15.6 Laptop, Intel Quad Core I7-2720QM up to 3.3Ghz, 8G DDR3, 512G SSD, DVD, USB 3.0, VGA, DP, DVI, W10P64-Multi Languages Support (EN/ES/FR), 1 year warranty Used Grade A -
Lenovo Thinkpad W520 Laptop Intel Core i7-2820QM 2.30GHz 12GB RAM NO HDD NO OS | eBay