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CMS 32GB (4X8GB) DDR3 10600 1333MHZ NON ECC SODIMM Memory Ram Upgrade Compatible with Lenovo® Thinkpad W520 Quad Core 4270 4276, 4282, 4284 - C12 - Walmart.com
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CMS 32GB (4X8GB) DDR3 10600 1333MHZ Non ECC SODIMM Memory Ram Upgrade Compatible with Lenovo® Thinkpad W520 Quad Core 4270 4276, 4282, 4284 - C12 at Amazon.com
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My Thinkpad W520 despite some clocking issues while on battery. I upgraded it to 16gb ram : r/thinkpad
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4GB Memory RAM for Lenovo ThinkPad W Series W500, W500 (4061B15), W500 (4061B13), W520, W700 204pin PC3-8500 1066MHz DDR3 SO-DIMM Black Diamond Memory Module Upgrade System Specific Memory - Newegg.com
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OFFTEK 8GB Replacement Memory RAM Upgrade for IBM-Lenovo ThinkPad W520 (Dual Core) (DDR3-12800) Laptop Memory at Amazon.com
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16GB KIT (2 x 8GB) for IBM Lenovo ThinkPad W Series W520. SO-DIMM DDR3 Non-ECC PC3-10600 1333MHz RAM Memory. Genuine A-Tech Brand. at Amazon.com
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Lenovo ThinkPad W520 4284 - Core i7 2860QM / 2.5 GHz - Win 7 Pro 64-bit - 8 GB RAM - 500 GB HDD - DVD-Writer - 15.6" 1920 x 1080 (Full HD) - Quadro 2000M / HD Graphics 3000 - 3G upgradable - Walmart.com
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Memory RAM | 4GB - Lenovo ThinkPad W520 W-Series - (OEM-# 55Y3711, 55Y3717, 78Y7385) - 1333MHz, Unbuffered, 1,5V
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Memory RAM | 4GB - Lenovo ThinkPad W520 W-Series - (OEM-# 55Y3711, 55Y3717, 78Y7385) - 1333MHz, Unbuffered, 1,5V
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