No. The fire safes that you find are "fire resistant" safes. There is no safe that can protect your valuables indefinitely against fire. Each fire resistant safe is tested against fire and given an hourly rating at 350° internal temperature. Many safes give little burglary protection as just a fire safe. This is why many people opt for a fire safe with a U.L. burglary certification appropriate for what the safe will be used for.
Is a regular fire safe appropriate to store computer data?
No. A standard fire safe is tested and rated to keep the interior of the safe at 350° for a certain amount of time. Paper burns at 450°. Media safes are tested and rated to keep the interior of the safe at 125° or 150° (depending on the safe) for a certain period of time. Media protection can be attained in several different ways - Some pricey, some very affordable. Ask a sales rep.