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MemoryMasters 2GB Kit 2 X 1GB DDR2 Memory for Dell Dimension 8400 Desktop PC2-4200 240 pin 533MHz DIMM RAM (MemoryMasters) - Walmart.com
![Dell Dimension 8400 series for Home - First Take review: Dell Dimension 8400 series for Home - First Take - CNET Dell Dimension 8400 series for Home - First Take review: Dell Dimension 8400 series for Home - First Take - CNET](https://www.cnet.com/a/img/resize/f059f91751056ae54d466765f8d352f86fb0aecc/hub/2010/05/07/39c99cc2-ae1a-476e-818e-472e297c837d/dell-dimension-8400-mt-1-x-p4-540-3-2-ghz-ram-512-mb-hdd-1-x-160-gb-dvd-writer-dvd-radeon-x300-se-mdm-gigabit-lan-win-xp-home.jpg?auto=webp&fit=crop&height=675&width=1200)
Dell Dimension 8400 series for Home - First Take review: Dell Dimension 8400 series for Home - First Take - CNET
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Best Buy: CMS 2GB (2x1GB) RAM Memory Compatible with Dell Dimension 8400 Series Desktop CM128643200D2DIMMX2200
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4GB Memory Upgrade for Dell Dimension 8400 Desktop PC 4 X 1GB DDR2 NON-ECC PC2-4200 240 pin 533MHz DIMM RAM (MemoryMasters) - Walmart.com
![Got these 3 dell towers the other day . All of them have Windows XP on them. The two towers are a Dimension 8300 and a Dimension 8400. Both have a Pentium Got these 3 dell towers the other day . All of them have Windows XP on them. The two towers are a Dimension 8300 and a Dimension 8400. Both have a Pentium](https://preview.redd.it/q73hdvalty361.jpg?auto=webp&s=e39c894b59445b5cc0efa98fee9b4ce099a4e0f1)
Got these 3 dell towers the other day . All of them have Windows XP on them. The two towers are a Dimension 8300 and a Dimension 8400. Both have a Pentium
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4GB Memory Upgrade for Dell Dimension 8400 Desktop PC 4 X 1GB DDR2 Non-ECC PC2-6400 240 pin 800MHz DIMM RAM (PARTS-QUICK Brand) at Amazon.com
![4GB Memory Upgrade for Dell Dimension 8400 Desktop PC 4 X 1GB DDR2 NON-ECC PC2-4200 240 pin 533MHz DIMM RAM (MemoryMasters) - Newegg.com 4GB Memory Upgrade for Dell Dimension 8400 Desktop PC 4 X 1GB DDR2 NON-ECC PC2-4200 240 pin 533MHz DIMM RAM (MemoryMasters) - Newegg.com](https://c1.neweggimages.com/ProductImage/AE9A_1_201904131559572481.jpg)