英特尔至强Sandy Bridge首测(图)(1)(15)
| SiSoftware Sandra Lite 2011 | ||
| 产品名称 | 至强E3-1275 | 至强X3430 |
| 平台类型 | 单路Sandy Bridge | 单路Lynnfield |
| Memory Bandwidth Benchmark 内存带宽测试 |
||
|---|---|---|
| Int Buff'd iSSE2 Memory Bandwidth | 17.37 GB/s | 13.78GB/s |
| Float Buff'd iSSE2 Memory Bandwidth | 17.37GB/s | 13.77GB/s |
| Memory Latency Benchmark 内存延迟测试 |
||
| Memory(Random Access) Latency (越小越好) | 73.3ns | 89ns |
| Speed Factor (越小越好) | 68.20 | 57.50 |
| Internal Data Cache | 4clocks | 4clocks |
| L2 On-board Cache | 11clocks | 9clocks |
| L3 On-board Cache | 35clocks | 47clocks |
| Cache and Memory Benchmark 缓存及内存测试 |
||
| Cache/Memory Bandwidth | 97.76GB/s | 51.08GB/s |
| Cache/Memory Bandwidth vs SPEED | 27.06MB/s/MHz | 21.79MB/s/MHz |
| Speed Factor (越小越好) | 38.10 | 27.10 |
| Internal Data Cache | 427.84GB/s | 205.08GB/s |
| L2 On-board Cache | 287.5GB/s | 175.49GB/s |
内存带宽测试中，同样是双路的两款平台在性能上出现了较大的差异，特别是L3缓存的项目中差距较大，这都是环形总线的功劳。
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