On the cache memory side Intel will use the same cache arrangement AMD is using on their Phenom CPUs, i.e., individual L2 caches for each core and a shared L3 memory cache. Each L2 memory cache will be of 256 KB and the L3 cache will be of 8 MB, at the least for the first models to be launched (Intel may launch Nehalem-based Xeon CPUs with more cache). L1 cache remains the same as Core 2 Duo (64 KB, 32 KB for instructions and 32 KB for data).
Core 2 Duo processors have only one L2 memory cache, which is shared among all CPU cores, but quad-core CPUs from Intel like Core 2 Quad and Core 2 Extreme have two L2 caches, each one shared by each group of two cores. For a better understanding we summarize the available cache architectures on Figures 3 and 4.
- 1. Introduction
- 2. Integrated Memory Controller
- 3. Memory Cache
- 4. Enhancements to the CPU Pipeline
- 5. Power Management Enhancements
- 6. Turbo Mode
- 7. Other Features