Techpowerup gathered some more details and found some performance information about the IGP of Intel's upcoming Clarkdale processors:
Finally, it boils down to performance. The Clarkdale IGP was pitted against Intel GMA X4500HD that's found on current Intel G45 chipset, and NVIDIA GeForce 9400 found on some high-end MCP7A-based motherboards, including the ION platform. While the superior graphics processing capabilities of the GeForce 9400 makes it almost inconsequential, the Clarkdale IGP performs almost twice as fast as GMA X4500HD overall. With HD video playback tests, the objective is to measure CPU usage. Lower the usage, the better. While the GeForce 9400 took the lead in most tests, again, the Clarkdale IGP outperformed its predecessor. It aced the Dual Stream H.264 20Mbps test with the lowest CPU usage.