You're Crazy!! It is no different. The processor has never been the issue. What has ever limited the processor was the fact that the chipset was not set up for it. Read around elsewhere, it will just be the "official" t-bird that supports 266(133) You will always be able to manipulate that with the multiplier as will still be the case to set it up properly in the bios. BEEEEEEEEESIDES.....the 266(133) does'nt relate to speed necessarily, just what bus is supports.