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The site specified in the first answer does not exist. Please HP support - provide a current link.
Sorry, there was a problem. Please try again later.Yes 64 You can either add (1) 32gb stick or add an additional 16gb stick.
Sorry, there was a problem. Please try again later.Hello. Thanks for your question. Yes, this HP Pavilion Desktop TP01-2234 computer is 64 bit. The RAM (memory) can be upgraded up to 32 GB DDR-3200. Here are the specs from HP: https://support.hp.com/rs-en/document/c07929809
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