Buy laptops to IT learning?

I'm torn between two models of Lenovo: Thinkpad W520 and Thinkpad T540p.

I'm wanting to buy a laptop to serve the educational needs of their IT. I'm torn between two machines:

1. Lenovo Thinkpad W520

Intel Core i7-2760QM Processor (6M Cache, 3.50 GHz up to) 8GB RAM DDR3 1333 Mhz bus 750G HDD Sata 3 max. 15.6 inch screen Full HD 1,920 x 1,080 pixel RGB LED Backlit 95% - anti-glare screen. Nvidia Quadro 2000M Intel HD 3000 2GB + 1GB. Optical disc. RW Double Layer DVDs. Port USB 3.0, 4x USB 2.0, RJ45 Ethernet / LAN, RJ11, IEEE 1394, CRT, DisplayPort, combo audio jack, ExpressCard (34mm), 4-in-1 digital media card, Smart card reader, Webcam, Battery 9 Cells Li-ion ...

2. Lenovo Thinkpad T540p

Intel Core i5-4300M Processor (3M Cache, 3.30 GHz up to) 4GB DDR3 RAM 500GB HDD 7200 Mhz bus 1,600 rpm speed. 15.6 inch screen Full HD 1920 x 1080 pixels LED Backlit - anti-glare screen. 2 graphics: NVIDIA GeForce GT 730 + Intel HD Graphics 4600. Optical Disc. RW Double Layer DVDs. Interfaces 2 x USB 3.0, 2 x USB 2.0 (1 Always on), Ethernet / LAN, VGA, Mini DisplayPort or Thunderbolt, combo audio jack, 4-in-1 digital card reader, smart card reader, Color sensors, Webcams , Battery 9 Cell Li - ion battery, Bluetooth, finger print.

Everyone helped me with advice, please. Thank you sincerely!