Just got my 8RDA+ on 6/17/03 from Newegg. C1 stepping on the chipset reported by WCPUID.
Can't hit 200Mhz FSB synced with 512MB stick of XMS3200. I can get 195Mhz rock solid after hours of benchmarking 3D2001SE. Best I've been able to complete a POST with is 198Mhz though. CPU is running at around 36C idle at 9x195Mhz. System temp is about 28C.
Kind of disappointed considering how many others are hitting 200Mhz. It's only 5Mhz, but still. Also hear reports of some people getting the voltage adjustment option with the latest BIOS, but my board didn't have it.
This weekend I'll try putting some AS3 thermal paste on the north bridge and see if it helps any. But I'm afraid my only solution will be north bridge active cooling and a voltage mod (which I'm not too confident about doing).
So even with C1 stepping, you're not assured 200Mhz out of the box.