Lenovo ThinkPad Yoga Specs:
Display: 12.5" full HD 1920 x 1080 IPS screen with 10 point multi-touch and 400 nits brightness. Wacom active digitizer with reduced glare finish available direct from Lenovo's website. Intel HD 4400 integrated graphics. Has a mini HDMI port.
Battery: 4 cell, 47 Wh Lithium
Ion rechargeable, sealed inside (can be serviced if you remove the bottom panel, affixed with Phillips head screws).
Performance: 4th generation Intel Haswell ULV CPUs. Available with Intel Core i5-4200U, Core i5-4300U, Core i7-4500U and Core i7-4600U, all dual core with Turbo Boost. 4 or 8 gigs of DDR3L RAM (soldered to motherboard) and 128 or 256 gig SSD (2.5", 7mm high SATA3).
x 8.70 x 0.75 inches. Weight: 3.5 pounds.
Camera: 720p webcam and mic.
Audio: Built-in stereo speakers with Dolby audio, mic and 3.5mm standard stereo headphone
Networking: Integrated single band 2 x 2 Intel N-7260
WiFi 802.11b/g/n or dual band Intel 7260 802.11ac WiFi and Bluetooth 4.0.
Software: Windows 8.1 with the usual Lenovo device management software.
Expansion and Ports: 2 USB 3.0 ports, mini HDMI, 3.5mm combo audio, OneLink Dock port and
SDXC card slot.
Microsoft Surface Pro 2 Specs:
Display: 10.6" IPS display with 10 points of multi-touch and Gorilla Glass. Resolution: 1920 x 1080. Wacom digitizer and included pen. Intel HD 4400 integrated graphics. Mini DisplayPort. Has ambient light sensor, accelerometer for automatic screen rotation, magnetometer and gyroscope.
Battery: 42 Wh Lithium
Ion rechargeable (sealed inside). Compact power brick with USB charging port for phones and tablets.
Performance: 1.6GHz dual core Intel Core i5-4200U (4th gen Haswell). 4 or 8 gigs of DDR3L RAM (soldered on board). 64, 128, 256 and 512 gig mSATA SSD drive.
x 6.81 x 0.53 inches. Weight: 2 pounds.
Camera: 720p webcams front and back.
Audio: Built-in stereo speakers with Dolby sound, mic and 3.5mm standard stereo headphone
Networking: Integrated dual band
Marvell 350N WiFi 802.11b/g/n and Bluetooth 4.0.
Software: Windows 8.1 Pro 64 bit. 200 gigs of Skydrive storage for two years bundled and 1 year of Skype unlimited world calling.
Expansion and Ports: 1
USB 3.0 port, mini DisplayPort, 3.5mm combo audio jack and micro SDXC card slot.