Can I run dbz games with this spec?

[Archimedes]

You are right with it feeling more authentic on a phone.

I haven't heard good things about psp emulation on S4 phones. Even though the phone has some top notch specs it looks like the emulator is not fully compatible with it's chipset or something like that.

for your Intel problem you can take a look at this thread: http://forums.ppsspp.org/showthread.php?tid=5838