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The ATI Radeon HD 3870 X2 video card (known internally as the R680) was first seen by the world right here on Legit Reviews a few months ago and was again spotted at CES 2008, where the the retail card was seen. Everyone knew that the launch was close, but today is the day that the card is officially announced. The ATI Radeon HD 3870 X2 is a single-board with multiple-GPUs on it, which is why the card is so interesting.

These days, there are so many mobile GPU models that it has become quite impossible to keep up with the different configurations. Therefore, we decided to compile this guide to provide an easy reference for those who are interested in comparing the specifications of the various mobile GPUs in the market as well as those already obsolescent or obsolete.Currently covering more than 80 mobile GPUs, this comprehensive comparison will allow you to easily compare 17 different specifications for each and every GPU!

We've had ATI CrossFireX running the past couple days here at Legit Reviews and while the drivers are not public yet, things are looking very good from what we have seen. We have slapped together a Radeon HD 3870 X2 with a Radeon HD 3870, which in turn creates a Triple CrossFireX platform with just two x16 PCI Express slots. Read on to see what CrossFireX is all about!

Built with over 1.4 billion transistors, NVIDIA’s GeForce GTX 280 and 260 GPUs are the largest and most complex GPUs ever created. Featuring 240 shader processors, 80 texture processors, and 1 GB of frame buffer, the GeForce GTX 280 better be enough to make you get all hot and sweaty. Read on as we look at the only water cooled GeForce GTX 280's on the market!

NVIDIA just launched the GeForce 9800 GX2 video card with a pair of 600MHz G92 GPUs, 256 stream processors running at 1.5GHz and 1GB GDDR3 memory operating at 2GHz. We have a couple XFX GeForce 9800 GX2 cards on hand and the performance numbers are very impressive. Read on to see how the GeForce 9800 GX2 does against a number of other video cards!

AMD gave us the opportunity to preview its long awaited CrossFireX technology. We liked the Radeon HD 3870 X2 when it launched, but how well will two fare?

This past Tuesday we did an article on the Diamond Viper Radeon HD 3870 1GB video card and it turns out some of the details in that article were incorrect. When the Diamond Multimedia launched the first 1GB ATI Radeon HD 3870 graphics card they had the memory interface incorrectly labeled as 512-bit. Legit Reviews contacted the Diamond Multimedia marketing department and they confirmed it was really just 256-bit.

Last week, we got a chance to look at the XFX GeForce 9800 GX2 graphics card and found that it was a very powerful card for gaming. At the conclusion of that article we stated that we couldn't show Quad-SLI numbers as NVIDIA had them under NDA. The gag order has finally lifted, so we can share with you our thoughts on Quad-SLI with a pair of XFX GeForce 9800 GX2 graphics cards!

The new highest of the high end solution is available in the form of two 9800 GX2 GPUs paired up for Quad SLI. How much performance can we get before we hit bottlenecks?