It's a tempdb page. You could try running CHECKDB on tempdb, but the checks are somewhat limited on tempdb, and it's likely the page isn't allocated any more and so wouldn't be read by CHECKDB anyway.

You've got IO subsystem problems on whatever you're storing tempdb on - a controller returned an old copy of a page rather than the most recent one. You need to run IO subsystem diagnostics, possibly SQLIOSim. Unfortunately page checksums aren't there on tempdb until SQL 2008.

Thanks