Which Sony's laptop is newer and what's the difference?

I have a few that I would recommend and they have great price tags:

- Sony 16.4" VAIO VPCF136FM/B Intel Core i7 Laptop 6GB Notebook 640GB Computer PC with BLU-RAY

Sony VPCF136FM/B VAIO laptop combines a 16.4? widescreen display (1600 x 900) with an Intel Core i7-740QM processor clocked at 1.73 Ghz with a Turbo Boost option for up to 2.93 Ghz of processing power, 6 GB of DDR3 RAM, and an NVIDIA GeForce GT 425M graphics processor with 1GB of dedicated RAM, to form a laptop that can handle almost any currently available game at high settings. Sony VAIO VPCF136FM/B is WiMax ready laptop, WiMax gives you superfast 4G wireless broadband 4X faster than 3G in addition to its 802.11b/g/n Wi-Fi for expanded connectivity on the move with the coverage of cellular networks. VAIO VPCF136FM/B Sony multimedia laptop also loaded with an integrated Blu-ray combo drive, 640GB Serial ATA hard drive, MOTION EYE webcam, Multimedia card reader, HDMI output, 802.11b/g/n WiFi and Bluetooth A2DP (2.1 + EDR) interface. This 6.9 lbs. laptop packed with 6-cell battery which provides up to 3 hrs of life.

http://www.amazon.com/Sony-VPCF136FM-Notebook-Comp...

Or

http://rover.ebay.com/rover/1/711-53200-19255-0/1?...