We are using version 4.5.3. The RGB driver does not seem fully developed. It has not given a much larger gamut than the CT version. Not sure if it is working right.Randy ZauchaManaged Color --- On Wed, 3/21/12, faro mojahedi <faromojahedi@yahoo.com> wrote: From: faro mojahedi <faromojahedi@yahoo.com> Subject: EFI null To: "zbet66@yahoo.com" <zbet66@yahoo.com> Date: Wednesday, March 21, 2012, 1:27 PM Hi Randy, I have EFI4.5 as well. RGB display prints never look as good as through Adobe/OS-Mac driver.How do you access EFI RGB driver?Thanks,Faro Hi All,Thanks for the replies.First off, I was not able to get to the edge of the new printer's gamut with just the EFI RGB driver. Then I tried creating a media setting as a simulation of Adobe RGB which is what the client files are mostly in. The results were still not as wide a gamut as printing through a postscript driver without a profile to an older dye ink printer. Then I set the simulation for a much larger gamut...Prophoto RGB. Add an Absolute rendering intent and the output gamut through the EFI Rip expanded past the gamut of a non-profiled printer. (except for cyans) Quite a surprise, but for packaging designers, the extra gamut is a real treat. Now they want a Gracol simulation for process colors, but also accurate Spot color simulation at the same time. Very demanding client, no? Randy Zaucha