Pre-orders for the 32GB version of Nvidia's Shield Tablet are now open in the US and Europe. Billed as the "ultimate tablet for gamers," the device comes in two varieties: a basic $299 version that ships with 16GB and Wi-Fi, and a $399 32GB model with 4G LTE capabilities.

Featuring a 192-core Tegra K1 processor, the upcoming portable console will come fully unlocked with support for over 70 carriers worldwide. It is the first tablet to have Twitch streaming, as well as the ability to stream games from PCs and the cloud via Nvidia's Grid. In addition, AT&T will give $100 credit to customers that activate their Shield Tablets on qualifying plans, but will also provide the option for subscribers to add the tablet to an existing Mobile Share Value plan for $10 a month. Shipping for the Shield Tablet is expected to begin on September 30th.

Update September 17th, 03:30AM: The post has been corrected to state that the 4G LTE version of the Shield Tablet is available for pre-order. The standard Wi-Fi version was already available.