Intel Nehalem-EP Xeon X5570 2.93GHz without SMT
Intel Nehalem-EP Xeon X5570 2.93GHz without SMT
Intel Nehalem-EP Xeon X5570 2.93GHz without SMT
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ScienceMark Membench |
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| 厂商 | Intel | Intel | |
| 产品型号 | Nehalem-EP Intel Gainestown Xeon X5570 2.93GHz |
Nehalem-EP Intel Gainestown Xeon X5570 2.93GHz 无超线程 |
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| 内存技术参数 | 4GB R-ECC DDR3-1333 SDRAM x6 | 4GB R-ECC DDR3-1333 SDRAM x6 | |
| L1带宽(MB/s) | 47880.48 | 47880.48 | |
| L2带宽(MB/s) | 19604.64 | 19584.61 | |
| 内存带宽(MB/s) | 10116.61 | 10160.28 | |
| L1 Cache Latency(ns) | |||
| 32 Bytes Stride | 2 cycles 0.68 ns |
2 cycles 0.68 ns |
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| L1 Algorithm Bandwidth(MB/s) | |||
| Compiler | 43072.25 | 42995.27 | |
| REP MOVSD | 43467.25 | 43441.08 | |
| ALU Reg Copy | 11949.09 | 12074.72 | |
| MMX Reg Copy | 22537.36 | 23200.89 | |
| SSE PAlign | 47773.13 | 47833.39 | |
| SSE2 PAlign | 47880.48 | 47880.48 | |
| L2 Cache Latency(ns) | |||
| 4 Bytes Stride | 3 cycles 1.02ns |
3 cycles 1.02 ns |
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| 16 Bytes Stride | 3 cycles 1.02ns |
3 cycles 1.02 ns |
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| 64 Bytes Stride | 8 cycles 2.73ns |
8 cycles 2.73 ns |
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| 256 Bytes Stride | 8 cycles 2.73ns |
8 cycles 2.73s |
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| 512 Bytes Stride | 7 cycles 2.39 ns |
7 cycles 2.39 ns |
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| L2 Algorithm Bandwidth(MB/s) | |||
| Compiler | 18039.64 | 18129.79 | |
| REP MOVSD | 19604.64 | 19584.61 | |
| ALU Reg Copy | 8788.90 | 8788.33 | |
| MMX Reg Copy | 14083.83 | 14119.38 | |
| SSE PAlign | 18731.92 | 18711.03 | |
| SSE2 PAlign | 5833.93 | 18711.03 | |
| Memory Latency(ns) | |||
| 4 Bytes Stride | 3 cycles 1.02 |
3 cycles 1.02 |
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| 16 Bytes Stride | 5 cycles 1.70 |
5 cycles 1.70 |
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| 64 Bytes Stride | 22 cycles 7.50 |
22 cycles 7.50 |
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| 256 Bytes Stride | 102 cycles 34.77 |
103 cycles 35.11 |
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| 512 Bytes Stride | 117 cycles 39.88 |
116 cycles 39.54 |
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| Memory Algorithm Bandwidth(MB/s) | |||
| Compiler | 9210.17 | 9173.01 | |
| REP MOVSD | 10116.61 | 10160.28 | |
| ALU Reg Copy | 8156.00 | 8207.56 | |
| MMX Reg Copy | 9306.18 | 9366.28 | |
| MMX Reg 3dNow | - | - | |
| MMX Reg SSE | 8781.26 | 8829.73 | |
| SSE PAlign | 8580.24 | 8685.93 | |
| SSE PAlign SSE | 9524.07 | 9572.71 | |
| SSE2 PAlign | 8560.83 | 8605.74 | |
| SSE2 PAlign SSE | 9555.13 | 9625.23 | |
| MMX Block 4kb | 7743.82 | 7776.80 | |
| MMX Block 16kb | 8321.35 | 8383.07 | |
| SSE Block 4kb | 7890.10 | 8011.37 | |
| SSE Block 16kb | 8355.86 | 8367.68 | |
关闭超线程之后，缓存和内存性能着微弱的提升，你不需要关闭超线程。
