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2、内存性能测试
浪潮NF5280M2配置了6根2GB ECC PC3-10600R内存,至强5600集成三通道内存控制器,理论内存带宽可以达到32GB/s。SiSoftware Sandra Pro Business 2010中提供了内存带宽、内存延迟和缓存性能的测试,我们继续用这个工具来考量浪潮NF5280M2的内存性能:
SiSoftware Sandra Pro Business 2010内存测试 | 内存带宽测试(越高越好) | Aggregate Memory Performance | 24.23GB/s |
---|---|---|---|
Int Buff'd iSSE2 Memory Bandwidth | 24.22GB/s | ||
Float Buff'd iSSE2 Memory Bandwidth | 24.25GB/s | ||
内存延时测试(随机) | Memory(Random Access) Latency(越低越好) | 120ns | |
Speed Factor(越低越好) | 86.20 | ||
Internal Data Cache | 4clocks | ||
L2 On-board Cache | 9clocks | ||
L3 On-board Cache | 54clocks | ||
内存延时测试(线性) | Memory(Linear Access) Latency(越低越好) | 11ns | |
Speed Factor(越低越好) | 7.70 | ||
Internal Data Cache | 4clocks | ||
L2 On-board Cache | 10clocks | ||
L3 On-board Cache | 12clocks | ||
缓存及内存测试 | Cache/Memory Bandwidth(越高越好) | 119.9GB/s | |
Speed Factor(越低越好) | 26.5 | ||
Internal Data Cache | 425.5GB/s | ||
L2 On-board Cache | 266.78GB/s | ||
L3 On-board Cache | 80.3GB/s |
高内存带宽、低延迟,E5640体现出了Nehalem架构的高带宽优势。虽然无法达到理论值,双路平台中实现这样的内存带宽还是令人满意的。
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