RV740基本上是一个40nm版本的RV770LE核心，640个流处理器，但显存位宽被削减到了一半只有128bit，这个和RV730是一样的，不过RV740搭配了和RV770XT（Radeon HD 4870）一样的高性能GDDR5显存，这样在显存带宽上和RV770LE保持在同一水平，由于位宽只有128bit，Render Back-Ends就只有两组共8个后端渲染单元（VR-Zone的这张规格表有误，注意甄别）。

　　另一方面，由于GDDR5的成本问题，未来也可能看到GDDR2或GDDR3版本的RV740，这样有更多的选择。

　　由于使用了40nm的新制程，功耗上应该低于RV770LE，但Core频率和整卡TDP并未公布。估计RV740的性能会略高于RV770LE（主要取决于Core频率），售价将会低于100美元。

　　消息来源：[vr-zone]

"AMD has identified that, in addition to reference samples of the ATI Radeon™ HD 4830 boards sent to media with a pre-production BIOS potentially impacting the card’s performance, a very limited number of ATI Radeon™ HD 4830 boards were released to market with the same pre-production BIOS. This is in no way hardware related, and an updated BIOS fully resolves the performance limitation.Through consultations with AMD board partners, it has been determined with a high degree of certainty that fewer than 400 ATI Radeon™ HD 4830 boards from one AMD board partner, HIS, have reached the market with the pre-production BIOS incorrectly provided by AMD. As only a small number of HIS-branded ATI Radeon™ HD 4830 cards are impacted, we ask any customers that purchased an HIS-branded ATI Radeon™ HD 4830 to test the board using the GPU-Z utility (available at http://www.techpowerup.com/gpuz). If the GPU-Z utility reports fewer than 640 shaders, please visit the HIS website for information on how to update the card BIOS via a downloadable install utility."

[图片来源：PCDVD]