Lenovo has gone a touch product mad at CES, launching four new IdeaPad laptops all with touchscreens and all running Windows 8.

The IdeaPad U310 Touch and U410 Touch are near identical in both spec and design to the already announced non-touch-capable Ultrabook offerings. The U310 is the smaller of the two at 18mm thick, the U410 is 21mm thick. 

Lenovo has simply introduced touchscreen versions of already available laptops with the 13-inch U310 Touch and U410 Touch. Specifications are an almost perfect match. Both pack the option to have an i7 processor inside and the larger 14-inch U410 can also have a discrete Nvidia GPU. In terms of storage, the U310 has 500GB and the U410 1TB. RAM also doubles on the U410 compared to the U310 from 4GB to 8GB.

As for displays, the U310 Touch is a 13-inch touchscreen with 1366 x 768 resolution and the U410 is 14-inch. Battery life gets a boost on the U410 to eight hours over the U310s six hours.

No UK pricing yet but the U310 will be on sale in March priced at $779 and $850 for the U410 Touch which will arrive in April. 

Also launched is the 14-inch IdeaPad Z400 Touch and the 15-inch Z500 Touch. Both laptops feature i7 processor, optical drives, up to 8GB of RAM, 1TB of internal storage and a 2GB Nvidia GT645M GPU. The Z400 is due in March and the Z500 in April. Prices will start at $699.