Techgage.com posted a review of Sapphire's HD 5550 Ultimate graphics card

This past February, AMD quietly launched the Radeon HD 5550 alongside the much more touted HD 5570. At about $10 less than that card, the HD 5550 is an unusual breed. To help put all of the pieces together, Sapphire sent us its "Ultimate" edition of the card, which uses reference clock speeds, but features a very effective passive cooler.

Sapphire Radeon HD 5550 Ultimate Review