What Tiger needs to run good on any system is allot of ram and a good video card and a fast HDD. i have PCI extreme (a QE enabler for PCI video cards) running on my AIO and i can say it helps.

i havent had any issues what soever in music streams on my AIO, now video streams can be painful a bit using some codecs.

if you install jag just be warned that support for jag is dropping like dead fly's at a fly killing party,