Laptop for a student, which specs is better?

1) Lenovo S21e Laptop: Processor
Intel Celeron N2840 processor(2.16GHz 1333MHz 1MB), Operating system
Windows 8.1 with Bing 64, Total memory
2.0GB PC3L-12800 DDR3L 1600 MHz
Hard drive device 32GB

2) ASUS X551CA: Processor Intel Celeron 2830U, operating system Windows 8.1, processor speed 2.1 GHz, memory 4 GB, hard drive capacity 500 GB,

3) Acer: Intel® Celeron® Quad Core processor N2930
(1.83 GHz with TurboBoost up to 2.17Ghz, 2 MB L3 cache)
• Windows 8.1
• 11.6" HD Acer CineCrystal™ LED-backlit TFT LCD
• Intel® HD Graphics
• 2GB RAM, 500GB HDD

all 3 have 3 year warranty. Laptop 1 cost $339, laptop 2 cost $349, laptop 3 cost $499.

maybe could you rank it in order from best to worst. I just need a laptop for school work.

thanks a million!

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