Aqua-Soft ForumsI red many forums (even this) where people ask for differences between optimized and non optimized applications for the "new" IBM/Apple PPC 970 processor (aka G5). Sometimes I saw people telling about the fake optimizations in the OS itself so the 970 processor is not fully used at all its top performance/speed.
I can speak about pre-PPC brand Apples so I used a lot, but I'm really new in this PPC's world (nine years using x86, how fast run the time 
). Now, I own a G5 1.8 single processor (this beauty runs like a F1) and I wondering if its capacity in terms of OS-core performance its fully used or we have to wait another major release of OS X (Tiger maybe? Apple exhausted all cats in OS names 
)
The difference between optimized and non optimized applicatios are obvious, for example, running Photoshop 7 (not G5 patched ~ 32 bit emulated) and Photoshop 8 (CS ~ 64 bit native), but its difficult to test this with the OS.
10.2.8 and 10.3.x are the only versions of OSes capable of support G5 processor, right? the cpu architecture changes from 32 bit to 64 bit, but my question is: these two operative systems take full advantage of this cpu?
My doubt maybe start with my expirience in x86 world, where, for example, to run in a 64 bit architecture u need a especilized version of XP (XP-64). Obviously, the version we normaly use its not supported by the cpu. I thought this could be the same scenary in Apple's world -> one version for 32 bit, one version for 64 bit, but the Panther distro is the same for two architectures (I can install the OS on a G3, G4 or G5 with the same disk set) So what's wrong?
What do u think about this?