The device driver, even with the latest stable version, seem to only honor hardware decoding for formats specified in the Blu-Ray and HD-DVD specification. Several reports from owners of HD 2400 Pro suggest the card do not fully support hardware decoding for all H.264/VC-1 videos. Those products were officially supported with the release of Catalyst 7.10 driver, which the cards were named as Radeon HD 2350 series. Reports has that the first batch of the RV610 core (silicon revision A12), only being released to system builders, has a bug that hindered the UVD from working properly, but other parts of the die operated normally.
The core has 16 kiB unified vertex/texture cache away from dedicated vertex cache and L1/L2 texture cache used in higher end model. The official PCB design implements only a passive-cooling heatsink instead of a fan, and official claims of power consumption are as little as 35 W. The Radeon HD 2400 series used a 64-bit-wide memory bus. It had 180 million transistors on a 65 nm fabrication process. Radeon HD 2400 series was based on the codenamed RV610 GPU.
