SiSoftware Sandra缓存内存测试主要包括内存带宽、内存延迟等性能的测试。
SiSoftware Sandra Pro Business 2009 | ||
|---|---|---|
测试对象 | PowerLeader PR2012NS 单路Intel Gainestown 至强 E5520 双通DDR3-1066 | 双路Intel Harpertown 至强 E5430 2.66GHz |
Memory Bandwidth Benchmark 内存带宽测试 | ||
Int Buff'd iSSE2 Memory Bandwidth | 13.39GB/s | 6.13GB/s |
Int Buff'd iSSE2 Memory Bandwidth vs SPEED | 9.43MB/s/MHz | |
Float Buff'd iSSE2 Memory Bandwidth | 13.37GB/s | 6.13GB/s |
Float Buff'd iSSE2 Memory Bandwidth vs SPEED | 9.43MB/s/MHz | |
Memory Latency Benchmark(Random) 内存延迟测试(随机) | ||
Memory(Random Access) Latency (越小越好) | 92ns | 108ns |
Speed Factor (越小越好) | 52.90 | 95.20 |
Internal Data Cache | 4clocks | 3clocks |
L2 On-board Cache | 10clocks | 18clocks |
L3 On-board Cache | 47clocks | |
Memory Latency Benchmark(Linear) 内存延迟测试（线性） | ||
Memory(Linear Access) Latency (越小越好) | 10ns | 20ns |
Speed Factor (越小越好) | 5.90 | 17.30 |
Internal Data Cache | 4clocks | 3clocks |
L2 On-board Cache | 10clocks | 13clocks |
L3 On-board Cache | 12clocks | |
Cache and Memory Benchmark 缓存及内存测试 | ||
Cache/Memory Bandwidth | 45.97GB/s | 68.88GB/s |
Cache/Memory Bandwidth vs SPEED | 20.76MB/s/MHz | 26.52MB/s/MHz |
Speed Factor (越小越好) | 32.10 | 111.90 |
Internal Data Cache | 190.37GB/s | 421.23GB/s |
L2 On-board Cache | 169.01GB/s | 122.68GB/s |
SiSoftware Sandra对比
在只有单路处理器的情况下，内存也受到了影响：只支持双通道DDR3-1066，从理论带宽上来看，略不及基准平台的四通道FBD DDR2-667，不过Nehalem结构的内置内存控制器在延迟上有优势，并且不用受FSB总线的制约，因此总体表现上比基准平台略好。
