The 2900 XT Toxic. Source: Sapphire.

Like a number of AMD partners, Sapphire introduced its version of the new Radeon HD 2900 XT graphics card today. However, Sapphire has another model up its sleeve. Dubbed Sapphire HD 2900 XT Toxic, this other model will come bundled with a custom water-cooling system that can fit inside a system's 5.25" drive bays. The water-cooling system integrates a reservoir, pump, and radiator, and Sapphire boasts that it's powerful enough to cool "not just the graphics card, but optionally a CrossFire pair of SAPPHIRE HD 2900 XT cards, the system CPU or other components."

This fancy water-cooling system isn't the Sapphire HD 2900 XT Toxic's only interesting trait, though. Sapphire says the card will also come with 1GB of GDDR3 memory clocked at an effective 850-860MHz, up from the standard card's 512MB of 825MHz GDDR3 RAM. Additionally, the Sapphire HD 2900 XT Toxic will be "factory overclocked" to 15% above stock clock speeds. Considering the standard 2900 XT runs at 742MHz by default, that 15% overclock should bump it up to a whopping 853MHz. Sapphire isn't making this card available just yet, though—it says we can expect it "in the coming weeks."