Nvidia shows off multi-GPU notebooks

The discrete GTxx GPU product range can render images up to five times faster than notebooks without the GPU, according to Nvidia. Here, two notebooks with similar specifications compete to render an image.

The notebook on the left, which has an Intel quad-core i5 processor at 2.27GHz and 4GB of RAM, rendered the image in around 10 seconds.  The notebook on the right, which has the GPU a quad-core i5 at 2.53GHz and 6GB of RAM, rendered the image in approximately two seconds. Nvidia claims that notebooks with the GPU will generally be five times faster than any device with an integrated GPU.

The chip's performance gains when rendering images, editing video or boosting GPU-compatible web browsers make it relevant to web developers and businesses which use high-resolution images and video.

Nvidia ran two versions of popular PC game Starcraft 2 on two laptops to demonstrate the chip's performance on intense, graphical applications. All graphical settings were running at the highest possible resolution. One laptop had the processor, and one had an integrated graphics processor. Here, Igor Stanek, European product PR manager, shows that the non-GPU laptop struggled to cope, running the game at 7 frames per second.

An integrated graphics laptop, left, and an Nvidia GPU laptop, right, demonstrate Starcraft 2. The laptop with the GT series GPU inside is demonstrating a consistent frame rate of 50 frames per second, while the laptop on the left is running at between 6 and 7 frames per second.

Six major laptop suppliers - Acer, Asus, Dell, Lenovo, Samsung and Toshiba - are onboard to support the 400 Series of GPUs. Nvidia said that HP was not going to support the GTxx series, but declined to comment further.

The GTxx series all support 3D technology, with some manufacturers fusing the new GPU with specially designed 3D-capable laptops to serve 3D content to users.

The GPUs are compatible with Nvidia's 3D Vision software, which can convert over 400 computer games into stereoscopic 3D on notebooks. Here, you can see a laptop with the GT 425m model displaying the game Trine in 3D.