Which computer should I get for Minecraft?

I love Minecraft, I'm a gamer. I run Minecraft with big mods. Between these two computers, which will run Minecraft better with the least lag?

(http://m.ebay.com/itm/AMD-Quad-Core-Gaming-PC-Computer-4-0-GHz-New-Fast-Custom-Built-Desktop-System-/271659264067)

(http://m.ebay.com/itm/151744046782)

Fix your links… We can't even see the pcs because your links are wrong

Links are wrong!

Minecraft players aren't gamers. It's a casual game at best. But on the serious side…

Let me explain benchmark scores to you. They are speed measurements of hardware. With a little searching online you can find recommended hardware to run Minecraft with big mods. Then to compare it, look up the score for the recommended CPU and compare it with the score of the CPU you want to buy.

Same thing with the GPU. Compare their scores and see if they are fast enough to run it.

Just don't go with the idea that GHz is a measurement of speed. People also are confused about cores, more cores isn't always better.

I have a decent i5-4690K gaming system that I played Minecraft on and I was playing with a bunch of Feed The Beast mods.

Everything was fine until a major update a few months ago. Suddenly the game is almost un-playable with hesitations and freezing every few seconds. When I drop back to stock Minecraft, everything is fine.

This makes it hard to tell you if a video card or system will play well with mods. Sorry.