Whats a good portable touchscreen (and pen) computer with good graphics card?

I would like to get a portable computer and I want a portable computer that is touchscreen and pen compatible (with pressure sensitivity). That has a descent graphics card that can handle games like minecraft, subnautica and planet explorers.
At least have:
Operating System: Windows XP/Vista/7/8. (If possible)
Memory (RAM): 256MB of RAM required.
Hard Disk Space: 500MB of free space required.
Processor: Pentium 450MHz or later (MMX support required)

If at all possible I'd like it to have a fold-able screen and have at least two (or more) USB ports.

Thanks!

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