在内存缓存测试环节，我们选择了科学计算中的Membench项目：
|
ScienceMark Membench |
||
| 厂商 | 联想 | 双路 X5365平台 |
| 产品型号 | 万全R525 | 双路 X5365平台 |
| 内存技术参数 | 2GB FBD ECC DDR2 533 SDRAM x 8 |
1GB FBD ECC DDR2 667 SDRAM x 8 |
| L1带宽 | 88465.1 | 83902.59 |
| L2带宽 | 26516.84 | 25120.09 |
| 内存带宽(MB/s) | 3909.53 | 3933.06 |
| L1 Cache Latency(ns) | ||
| 32 Bytes Stride | 0.95 | 1 |
| L2 Cache Latency(ns) | ||
| 4 Bytes Stride | 0.95 | 1 |
| 16 Bytes Stride | 1.27 | 1.34 |
| 64 Bytes Stride | 3.8 | 3.68 |
| 256 Bytes Stride | 3.8 | 3.68 |
| 512 Bytes Stride | 4.12 | 4.01 |
| Memory Latency(ns) | ||
| 4 Bytes Stride | 1.27 | 1 |
| 16 Bytes Stride | 5.07 | 4.68 |
| 64 Bytes Stride | 20.26 | 18.81 |
| 256 Bytes Stride | 68.06 | 60.82 |
| 512 Bytes Stride | 74.08 | 67.84 |
| Algorithm Bandwidth(MB/s) | ||
| Compiler | 3409.03 | 2824.44 |
| REP MOVSD | 3429.7 | 2841.6 |
| ALU Reg Copy | 3166.43 | 2747.44 |
| MMX Reg Copy | 3245.07 | 2794.63 |
| MMX Reg 3dNow | --- | --- |
| MMX Reg SSE | 3909.53 | 3933.06 |
| SSE PAlign | 3882.29 | 3875.5 |
| SSE PAlign SSE | 3900.2 | 3922.27 |
| SSE2 PAlign | 3883.97 | 3860.31 |
| SSE2 PAlign SSE | 3889.75 | 3920.55 |
| MMX Block 4kb | 3193.02 | 3250.86 |
| MMX Block 16kb | 3492.09 | 3528.15 |
| SSE Block 4kb | 3179.63 | 3183.58 |
| SSE Block 16kb | 3505.3 | 3539.32 |
毫无疑问，更高主频的45nm Xeon X5460在处理器带宽上快一些。
