Following the recent announcement of the limited edition HD 4890 ATOMIC Edition – the first graphics card to deliver a 1GHz engine clock – SAPPHIRE now offers the HD 4890 TOXIC Edition based on the same high performance components but with slightly lower core clock allowing it to be more widely available The SAPPHIRE HD 4890 TOXIC uses the same configuration of Vapor-X and heatpipe cooling technology as the ATOMIC Edition. It is factory overclocked with a high speed core clock of 960MHz as well as 1GB of GDDR5 memory with clocks of 1050MHz to give stunning performance straight out of the box. Two dual-link DVI ports are provided as well as TV out. HDMI and VGA are supported with adapters.