![Memory RAM | 4GB - Lenovo ThinkPad W520 W-Series - (OEM-# 55Y3711, 55Y3717, 78Y7385) - 1333MHz, Unbuffered, 1,5V Memory RAM | 4GB - Lenovo ThinkPad W520 W-Series - (OEM-# 55Y3711, 55Y3717, 78Y7385) - 1333MHz, Unbuffered, 1,5V](https://www.compuram.biz/bilder/produkte/ram/box_so-dimm_1er-p2.png)
Memory RAM | 4GB - Lenovo ThinkPad W520 W-Series - (OEM-# 55Y3711, 55Y3717, 78Y7385) - 1333MHz, Unbuffered, 1,5V
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CMS 16GB (2X8GB) DDR3 10600 1333MHZ Non ECC SODIMM Memory Ram Upgrade Compatible with Lenovo® Thinkpad W520 Quad Core 4270; 4276, 4282, 4284 - A13 at Amazon.com
![My Thinkpad W520 despite some clocking issues while on battery. I upgraded it to 16gb ram : r/thinkpad My Thinkpad W520 despite some clocking issues while on battery. I upgraded it to 16gb ram : r/thinkpad](https://preview.redd.it/my-thinkpad-w520-despite-some-clocking-issues-while-on-v0-zukwpb7ekheb1.jpg?width=640&crop=smart&auto=webp&s=b04ace48b93ebde06d4b4e9d6b062da86b715a13)
My Thinkpad W520 despite some clocking issues while on battery. I upgraded it to 16gb ram : r/thinkpad
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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
![Lenovo ThinkPad W520 4276 - Core i7 2760QM / 2.4 GHz - vPro - Win 7 Pro 64-bit - Quadro 1000M - 8 GB RAM - 500 GB HDD - DVD-Writer - 15.6" 1920 x 1080 (Full HD) - Walmart.com Lenovo ThinkPad W520 4276 - Core i7 2760QM / 2.4 GHz - vPro - Win 7 Pro 64-bit - Quadro 1000M - 8 GB RAM - 500 GB HDD - DVD-Writer - 15.6" 1920 x 1080 (Full HD) - Walmart.com](https://i5.walmartimages.com/seo/Lenovo-ThinkPad-W520-4276-Core-i7-2760QM-2-4-GHz-vPro-Win-7-Pro-64-bit-Quadro-1000M-8-GB-RAM-500-HDD-DVD-Writer-15-6-1920-x-1080-Full-HD_7aea3314-80cf-412f-9853-ed1be124965a_1.6bf590c45c503be70a2287256044f4d9.jpeg?odnHeight=768&odnWidth=768&odnBg=FFFFFF)
Lenovo ThinkPad W520 4276 - Core i7 2760QM / 2.4 GHz - vPro - Win 7 Pro 64-bit - Quadro 1000M - 8 GB RAM - 500 GB HDD - DVD-Writer - 15.6" 1920 x 1080 (Full HD) - Walmart.com
![Lenovo W520 Business Laptop, Intel Core i7-2nd Gen CPU, 8GB DDR3 RAM, 500GB HDD, NVidia Quadro1000M 2GB, 15.6 inch Display, Win10, Refurbished Laptop Lenovo W520 Business Laptop, Intel Core i7-2nd Gen CPU, 8GB DDR3 RAM, 500GB HDD, NVidia Quadro1000M 2GB, 15.6 inch Display, Win10, Refurbished Laptop](https://b2c.cdn.myrapidtrack.com/products/images/1645719963169182262.jpg)
Lenovo W520 Business Laptop, Intel Core i7-2nd Gen CPU, 8GB DDR3 RAM, 500GB HDD, NVidia Quadro1000M 2GB, 15.6 inch Display, Win10, Refurbished Laptop
![OFFTEK 8GB Replacement Memory RAM Upgrade for IBM-Lenovo ThinkPad W520 (Dual Core) (DDR3-12800) Laptop Memory at Amazon.com OFFTEK 8GB Replacement Memory RAM Upgrade for IBM-Lenovo ThinkPad W520 (Dual Core) (DDR3-12800) Laptop Memory at Amazon.com](https://m.media-amazon.com/images/I/61mlx7jlbVL.jpg)
OFFTEK 8GB Replacement Memory RAM Upgrade for IBM-Lenovo ThinkPad W520 (Dual Core) (DDR3-12800) Laptop Memory at Amazon.com
![Memory RAM | 4GB - Lenovo ThinkPad W520 W-Series - (OEM-# 55Y3711, 55Y3717, 78Y7385) - 1333MHz, Unbuffered, 1,5V Memory RAM | 4GB - Lenovo ThinkPad W520 W-Series - (OEM-# 55Y3711, 55Y3717, 78Y7385) - 1333MHz, Unbuffered, 1,5V](https://www.compuram.biz/bilder/produkte/ram/ddr3_so-dimm-p2.jpg)