How may FPS will this get me in Minecraft and Feed the Beast?

I broke my old laptop and wanted to buy a new one. My old laptop had 4 gbs of ram andintel i3.It gave me 25 ish fps on lowest settings in minecraft and 20 ish on FTB? How much will this laptop give me? Http://www.futureshop.ca/en-CA/product/acer-acer-aspire-e1-15-6-laptop-iron-intel-core-i5-3337u-1tb-hdd-8gb-ram-windows-8-e1-570-6615/10276256.aspx?path=355f4b7041676915315ddbe31ab47feaen02. I'm not looking for an amazing fps number.15+ works.

You will get more than 15 FPS, and most likely a lot more than 24 FPS, but it is hard to say exactly how much you can get, depends on if you have other software running etc whilst playing it.