在内存缓存测试环节，我们选择了科学计算中的Membench项目：
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ScienceMark Membench |
||
| 厂商 | 戴尔 | 双路 X5365平台 |
| 产品型号 | 2950III | 双路 X5365平台 |
| 内存技术参数 | 1GB FBD ECC DDR2 667 SDRAM x 8 |
1GB FBD ECC DDR2 667 SDRAM x 8 |
| L1带宽 | 69757.73 | 83902.59 |
| L2带宽 | 20921.44 | 25120.09 |
| 内存带宽(MB/s) | 3941.99 | 3933.06 |
| L1 Cache Latency(ns) | ||
| 32 Bytes Stride | 1.2 | 1 |
| L2 Cache Latency(ns) | ||
| 4 Bytes Stride | 1.2 | 1 |
| 16 Bytes Stride | 1.6 | 1.34 |
| 64 Bytes Stride | 4.81 | 3.68 |
| 256 Bytes Stride | 4.81 | 3.68 |
| 512 Bytes Stride | 5.21 | 4.01 |
| Memory Latency(ns) | ||
| 4 Bytes Stride | 1.2 | 1 |
| 16 Bytes Stride | 5.21 | 4.68 |
| 64 Bytes Stride | 20.45 | 18.81 |
| 256 Bytes Stride | 66.97 | 60.82 |
| 512 Bytes Stride | 72.98 | 67.84 |
| Algorithm Bandwidth(MB/s) | ||
| Compiler | 3375.97 | 2824.44 |
| REP MOVSD | 3410.57 | 2841.6 |
| ALU Reg Copy | 3120.95 | 2747.44 |
| MMX Reg Copy | 3150.86 | 2794.63 |
| MMX Reg 3dNow | --- | --- |
| MMX Reg SSE | 3932.95 | 3933.06 |
| SSE PAlign | 3939.92 | 3875.5 |
| SSE PAlign SSE | 3923.56 | 3922.27 |
| SSE2 PAlign | 3941.99 | 3860.31 |
| SSE2 PAlign SSE | 3921.63 | 3920.55 |
| MMX Block 4kb | 3206 | 3250.86 |
| MMX Block 16kb | 3494.49 | 3528.15 |
| SSE Block 4kb | 3199.21 | 3183.58 |
| SSE Block 16kb | 3523.46 | 3539.32 |
频率上的劣势和45nm架构的作用混合，让戴尔2950III的性能对比X5365平台略具优势。
