techPowerUp posted a review on the Sapphire HD 4890 1 GB GDDR5
A quote from the article:
>> Sapphire HD 4890 1 GB GDDR5 Review
Sapphire's new HD 4890 comes with 1 GB of GDDR5 memory and yet unseen clock speeds offering much better performance at a competitive price. Will that be enough to beat NVIDIA's new GeForce GTX 275 ?
>> Sapphire HD 4890 1 GB GDDR5 Review
