forgot to post this a few weeks ago, but it's a nice thing to know.
Wii U RAM, GPU and disc speeds don't disappoint | Nintendo Nation.net
The other pleasing bit of news was the read speed of Nintendo’s optical Blu Ray discs – confirmed to store 25GB of data – ensuring games spanning several discs are no more.
It’s not the capacity of the discs we’re interested in, though. It’s the read speed – quoted at 22.5MB/s. This is fast enough to ensure we’re not hobbled with slow, mandatory installs that ruin Nintendo’s ethos of ‘immediate gaming. To compare, PS3′s Blu Ray drive reads at 9MB/s. Fast loading times and no installs on Wii U, then.
And for a 360 Comparison, the 360 disc reading times are 15.85 MB/s. at max
If it helps make the loading times similar to cartridge games im all for it.