fromlostdays said
I5, internal SATA seagate 2 terabytes, 16 gigs of ram....
Anywhere from 15 to 30 seconds. I've never actually counted to be honest. I have a fade screen that shows a loading screen and zip progress bar so its cool for me rather than annoying. I was reading somewhere that theres a way you can turn excess ram into a temp storage for decompressed roms, and this may speed it up, and might even speed up emulation, but I personally don't think I need that.
It's actually pretty cool software, but you need a really good amount of RAM before you attempt something like that. http://store.steampowered.com/app/337070/
It also depends on the size of the game, if you try to un-archive a 6GB game with 4GB of RAM, or even 8GB, it wont work all that well. If you want to save space (comparable to an archive) @ALIE I would honestly suggest using several custom compressed formats. PS2 games can be compressed from ISO to CSO with software called MaxCSO, written by PCSX2 devs. I compressed all my games and they run just fine in a smaller package. PSP games can also be compressed from ISO to CSO's but there is software called YACC (Yet Another CSO Compressor) that is different then MaxCSO as it only does images smaller than 4GB and you can do all of your games at once. Just note there are games you shouldn't compress as the game wont function properly, but in the case of the PSP I only found that to be true for the 3 GTA games, everything else ran fine.
You can also try WBFS for Wii games as well. I don't remember if GCM is a compression for Gamecube games... but you can look that up easily. If there is no compression for any later console discs (like potentially the Gamecube) you can also try specific console junk removers. It removes empty or junk data from the disc. The tool needs to be written for the specific system though, and only from PS2 / Gamecube on wards I believe.