The more impressive, and obviously more expensive version known as the Radeon X1900XTX features core frequencies of up to 650MHz, and memory speeds of 1.55GHz. With such specifications it would be difficult for rival products to outperform the Radeon X1900XTX; as a matter of fact NVIDIA barely matches it.
Currently the Radeon X1900XTX is considered the fastest (single) graphics card available in the market. However, more importantly these brand new X1900 products are already available in large quantities. This is easily the most successful aspect of this product launch; it has been some time since ATI pulled off a hard product launch. Thankfully they managed to do it with their most powerful graphics card series yet.
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