| Bulldozer was mistake that cost AMD years of advancements. They tried to do what Intel did a few years before. Design for clock speed and nothing else, figuring the 4ghz ceiling was easy to break. Intel did this with P4 "netburst" architecture. They hit a frequency wall that made thier new deeply pipelined CPU worthless. This is when AMD caught up last time with the athlon series. Intel actually went back to the design of the Pentium III!! With higher IPC, a few upgrades lifted from the P4, and new processes, it gave birth to the Core series. The Intel processors we have today still share more design history with the P3 than the P4. And since then, Intel has focused on IPC over clock speed. The crazy part was AMD making the same mistake years later with Bulldozer. Makes me wonder if the remedy was the same... Go back and update the Athlon cores. The ancient Athlon/P3 IPC is amazingly good compared to today's chips if you scale them by clock speed and core count. Perhaps half, which is impressive for the age of the chip. All these bugs affecting over a decade of CPU design tells us these chips share a lot of the same logic, if not entire blocks unchanged for more than a decade. |