If a stock GTX 285 just isn't enough then Asus has released an ROG graphics card. Standing next to motherboards such as the Maximus, Rampage and Crosshair, the Matrix GTX285 promisses enhanced overclocking and has duely been put through its paces in our lab.

MSI has applied its lightning technology to the GTX275. We've put it through its paces to see if it can add more pizazz to the equation than the MSI NGTX260 we looked at in July.

Asus brings something unique to the crowded graphics market with it's take on AMD's Radeon HD 4890. Using the included software you're able to manually alter the card's core voltage, allowing for some serious overclocking. Volt modded overclocks made easy? We find out.

Sapphire has broken the 1GHz core barrier with its latest card, the Radeon HD 4890 Atomic. Does the monster overclock lead to some equally monster performance scores, or is this simply a PR barrier ATI is playing up to be bigger than it really is? We grab the testing gear and find out.

Sapphire has not only added an excellent Vapor-X cooler to this Radeon HD 4870, but it has upped the memory from 1GB to 2GB. Does the extra RAM make a difference, and how effective is that cooler? Read on to find out.