In Ryzen, AMD implemented its first micro-op cache, which can store recently used instructions, improving performance and reducing pipeline stalls. This gives the Ryzen 7 1800X a total of 16MB of 元, 4MB of L2, and 1MB of L1 cache. Each partition has 8MB of 元 cache, and each core has a dedicated 512KB L2 cache, a 64KB L1 instruction cache, and a 64KB L1 data cache. The eight cores are organized into two partitions. The CPU can also accelerate up to 4.1 GHz in certain work loads.
The top end Ryzen processor, Ryzen 7 1800X, has eight CPU cores clocked at 3.6 GHz. With an uphill battle to remain in the processor market, AMD put its hopes on Ryzen. The company lost significant financial resources and had to sell its silicon fabs. AMD ExcavatorĪMD lost ground to Intel in essentially every area of the CPU market during the Bulldozer years. Rearranging the cache on the APU also helped to lower the power consumption, as cache tends to be fairly power hungry, and this new configuration has less overall cache on die. The graphics processor also gained 512 KB of dedicated L2 cache to increase graphics processing power. Because the L1 cache is several times faster than the L2 cache, this helps to boost IPC performance. The branch prediction target buffer was increased by 50 percent as well, to 768 KB, which further helps to improve performance. The processor has less L2 cache, but twice as much L1 cache when compared to Steamroller. AMD reworked the cache inside of Excavator, too. Carrizo is designed to have significantly higher transistor density (than prior Bulldozer-based processors), which helps to reduce the die area and lower power consumption. Relatively few of these products have been released thus far, so we can't be sure what the clock speed limit will be on these parts. The last architecture that AMD plans to produce based on Bulldozer is known as Excavator, which is used inside of AMD Carrizo-based APUs.
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