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缓存的延迟
CPU / CPU-Z Latency | L1 Cache | L2 Cache | L3 Cache | Nehalem (2.66GHz) | 4 cycles | 11 cycles | 39 cycles | Core 2 Quad Q9450 - Penryn - (2.66GHz) | 3 cycles | 15 cycles | N/A |
内存访问速度
CPU / Everest Ultimate 4.50 | Memory Read | Memory Write | Memory Copy | Memory Latency | Nehalem (2.93GHz) | 13.1 GB/s | 12.7 GB/s | 12.0 GB/s | 46.9 ns | Core 2 Extreme QX9650 - Penryn - (3.00GHz) | 7.6 GB/s | 7.1 GB/s | 6.9 GB/s | 66.7 ns |
Nehalem的L3延迟比Barcelona低1/3,不仅内存带宽大得多,而且DDR3内存控制器比Barcelona的DDR2内存延迟还低…… |
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