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HP Pavilion Desktop Compatible Memory / RAM / SSD Upgrades

Experts in HP Pavilion Desktop p6400 / p6500 Series compatible upgrades. Free delivery available. Free returns and support on all products. Lifetime warranty on all Laptop and Desktop Memory / RAM. All Mr Memory recommended upgrades are brand new and 100% compatible with your HP.

At Mr Memory you get enhanced speed and peak performance with every upgrade, taking your device to the limit. In fact, we pride ourselves on delivering speed and performance in every area of our business.

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Rated 4.8 out of 5
on Google

John Fiore - 12 Jun 2026

Excellent and well laid out website, easily found my motherboard and the correct memory sticks for it. Prompt and well packaged delivery. PC now much faster.