ATI's Radeon X550 chip doesn't appear on the company's website, but that hasn't stopped Taiwanese vendor Info-Tek announcing a pair of graphics cards based on the part.
A mention of the X550 has also been found lurking in ATI's latest Catalyst driver, 5.6, verifying that it's a genuine ATI product.
The driver reveals the X550 is essentially a higher-clocked X300.
Read the complete story. (The Register)