# Frequently Asked Questions vRAM ## Frequently Asked Questions vRAM * Why do I need vRAM? * How is vRAM different from RAM? * How can we be sure that data cached with DSPs is not tampered with? * How much does vRAM cost? ### Why do I need vRAM? RAM is a memory device used to store smart contract data on EOS. However, its limited capacity makes it difficult to build and scale dApps. vRAM provides dApp developers with an efficient and affordable alternative for their data storage needs. ### How is vRAM different from RAM? vRAM is a complement to RAM. It is an alternative storage solution for developers building EOS dApps that are RAM-compatible, decentralized, and enables storing & retrieving of potentially unlimited amounts of data affordably and efficiently. It allows dApp developers to cache all relevant data in RAM to distributed file storage systems (IPFS, BitTorent, HODLONG) hosted by DAPP Service Providers (DSPs), utilizing RAM to store only the data currently in use. vRAM transactions are still stored in chain history and so are replayable even if all DSPs go offline. ### How can we be sure that data cached with DSPs is not tampered with? DSPs cache files on IPFS, a decentralized file-storage system that uses a hash function to ensure the integrity of the data. You can learn more about IPFS here: ### How much does vRAM cost? Developers who wish to use the vRAM System do so by staking DAPP tokens to their chosen DSP for the amount specified by the Service Package they’ve chosen based on their needs. By staking DAPP, they receive access to the DSP services, vRAM included. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.liquidapps.io/liquidapps-documentation/faqs/frequently-asked-questions-vram.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.