Whichever of those two that you choose, the core specs will be a budget Celeron Bay Trail-D CPU (the J1800 is a dual core variant at that), Ivy Bridge integrated graphics, 32Gb SSD (which will largely be consumed by Win 8.1), only 2Gb of RAM, and presumably no room for expansion (nor even any other HDD space).
I wouldn't touch that with a bargepole for poker purposes. It looks like it's designed for web browsing, perhaps office applications, and nothing else.
Not enough RAM, not enough drive space, a pretty limited CPU, and no upgrade potential in that form factor. No, no, no. Even at only 4 tables I think performance might be patchy, you'd have issues with drive space as your database grew (if you could get it on there at all alongside Windows, and assuming you are using the machine for ABSOLUTELY NOTHING but poker). And even if performance was okay at the outset you have no room for manoeuvre in terms of future-proofing.
