Like Ressie pointed out, I did a bit of a comparison before. Don't take these at face value, and please consume with a large grain of salt! Your mileage will vary!!
Live vs. PTR - Root Folder:
Live vs. PTR - Data Folder (excluding Data\Cache):
Live vs. PTR - Data\Cache:
And here's a post that I submitted yesterday regarding this process:
From what I've gathered this seems to be consolidating files more than anything else, such as increasing framerates. It may slightly improve load times or something of the sort, although the biggest thing it seems to have going for it is the large cleanup it's performing on the way the MPQs are stored.
Currently on live (excluding Data\Cache) there are 84 files and 8 folders in the Data folder totaling 15.3 GB. On the PTR the Data folder is only 47 files and 6 folders adding up to 14.7 GB (once again, these numbers exclude Data\Cache).
The Data\Cache folder on live is 10.4 GB spread across 62 files and the localization (enUS) folder. On the PTR, it's 7.23 GB with 104 files and the localization folder. It's also worth noting that on PTR most of the files are sound cache files, while on live there are many patch-base files. I'm not sure whether that would be the same for everyone, though, so take that with a grain of salt.
In the end, this "optimization" process seems to be aimed at trimming out some of the fat. Players running WoW off of solid state drives are probably the ones that will find the smaller file sizes most exciting.
That's about as much information as I have still. Assuming I find anything else interesting out, I'll be sure to share. If you have any questions for me regarding this that are within my realm of knowledge, feel free to ask and I'll answer as soon as possible.
The ability to install updates with limited drive space is also great. :)
________________________________________________The wise speak only of what they know.
- J.R.R. TolkienCORE I7 3.8GHz | 12GB RAM | ATI 5970+5870 | F120 SSD
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