Legit Reviews posted a review on the Palit Radeon HD 4870 Sonic Dual Edition 512MB
A quote from the article:
>> Palit Radeon HD 4870 Sonic Dual Edition 512MB Review
The Palit Radeon HD 4870 Sonic Dual Edition is equipped with 512MB of GDDR5 memory and comes packed with innovative features like a dual bios and dual cooling fans. Palit custom designed this graphics card from the ground up, so no even the PCB is reference designed. Read on to see what Palit changed and how it performs with all the changes!
>> Palit Radeon HD 4870 Sonic Dual Edition 512MB Review