Nvidia's fastest ever graphics card, the Zotac-built GeForce GTX 280 AMP went on sale today. It's causing a bit of a stir at the moment, throughout the industry and not least in the TechRadar office.

We're currently benchmarking the overclocked GeForce GTX 280 AMP card and we'll have a definitive review for you on Thursday.

However, that's not the only juicy graphics-related review we've got coming up. We've also got our mits on some very early samples of ATI's 4800-series cards including the Radeon 4850 and 4870.

We can't tell you anything about them yet – even the names are supposed to be a secret – but rest assured we'll be publishing some exciting reviews over the next few days.

We'll also be running a head-to-head feature which pits the nVidia and ATI cards against each other, to decide which is the best.

The GeForce 9-series was disappointing to say the least, so let's hope this new generation of cards gives us something to cheer about.