X BOX1

FeatureXbox OneOptical DriveBlu-Ray/DVD [1]Game DVRYes, Upload Studio[2]HDCP EncryptionNo for games

RAM

8GB DDR3
Clock: 2133MHz Bandwidth: 68.26 GB/s
+ 32MB eSRAM
Bandwidth: 204 GB/s(102 In/102 Out) [3]

Flash Memory

8GB Flash Memory [4]

CPU
8 Core AMD custom CPU
Frequency: 1.75 GHz [5]
GPU Clock Speed: 853 MHz(originally 800 MHz)

Shader Cores: 768
Peak Throughput: 1.31 TFLOPS [6]

Storage

 1T (5400 rpm) Hard Drive non-replaceable, External Hard Drive support availableSecond Screen
SmartGlass App on Android, iOS, Windows Phone and Windows 8 [7]Cloud StorageYes [8]Mandatory Game InstallsYes [9]
Required Internet ConnectionAfter Day One patch, No [10]
Used Game FeeNo [11]Backwards CompatibilityBackwards compatibilty now avaible for certain games!Cross Game ChatSkype, Party Chat [n]
Motion Control

Kinect 2

Voice CommandsYes, Kinect 2 is needed. [13]Subscription ServiceXbox Live [14]
Required for Online Play 
USBUSB 3.0 x3 [15]
Live StreamingYes, With Twitch.TV
Reputation PreservationAchievements will be ported From Xbox 360. [16]
NetworkingGigabit Ethernet, WiFi (A/B/G/N dual-band at 2.4ghz and 5ghz) includes WiFi Direct support [17]

A/V Hookups

HDMI input and output (4K support)

API 

DirectX 11.2

Mouse and Keyboard Support 

Yes