The birth of the Celeron was largely due to a desire to not waste wafer space when processors were coming off the line. When a P2 or P3 failed QA due to faulty L2 cache, extra cache could be disabled giving you a workable Celeron. This is very standard in the PC industry, and is currently seen in the Club 3D's X800 GT(now renamed). It is using the standard R480 VPU, but has half the pipelines disabled (8 of 16). It is being dubbed the X800 RX. Apparently, this disabling happens as part of firmware. Which means, feasibly, if you had a good part, you might be able to flash it and get the other 8 pipelines re-enabled. Time will tell. This card is meant to sit in the $100-140 bracket as a midrange card. Check the full article here.