Photoshop would "run fine" unless you bump your works past 24000 x 24000 pixels... which is pretty mandatory for professional works.
PCSX2 and Dolphin requirements are about the same, with PCSX2 being a bit more taxing than Dolphin in some cases.
And DS emulation is not at its finest. But it should be quite intense in some games... Try Advance Wars: Days of Ruin. Or if you want to check the limits of your computer, try PCSX2.
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cChip interpreter WIP - current status: Release Candidate
LRx Filter RC - current performance rating: 9/10