刚刚我们看到的是不同状态下E3两款处理器的对比，成绩基本持平。如果同样的情况，它们的性能会有多大的差别呢？
SiSoftware Sandra Lite 2011 | ||
| 产品名称 | 至强E3-1280（关闭） | 至强E3-1275（关闭） |
| 平台类型 | 单路Sandy Bridge | 单路Sandy Bridge |
| Processor Arithmetic Benchmark 处理器算术运算测试 | ||
|---|---|---|
| Dhrystone ALU | 109.75 GIPS | 106.77GIPS |
| Dhrystone ALU vs SPEED | 28.21 MIPS/MHz | 28.86MIPS/MHz |
| Whetstone iSSE3 | 51.68 GFLOPS | 49.57 GFLOPS |
| Dhrystone iSSE3 vs SPEED | 13.28 MFLOPS/MHz | 13.40MFLOPS/MHz |
| Processor Multi-Media Benchmark 处理器多媒体测试 | ||
| Multi-Media Int x16 iSSE4.1 | 168MPixel/s | 163.79MPixel/s |
| Multi-Media Int x16 iSSE4.1 vs SPEED | 65.33 kPixels/s/MHz | 63.69kPixels/s/MHz |
| Multi-Media Float x8 iSSE2 | 114.27MPixel/s | 111.37 MPixel/s |
| Multi-Media Float x8 iSSE2 vs SPEED | 44.44 kPixels/s/MHz | 43.3kPixels/s/MHz |
| Multi-Media Double x4 iSSE2 | 62MPixel/s | 60.16MPixel/s |
| Multi-Media Double x4 iSSE2 vs SPEED | 24.13 kPixels/s/MHz | 23.4kPixels/s/MHz |
| Multi-Core Efficiency Benchmark 处理器效能测试 | ||
| Inter-Core Bandwidth | 9 GB/s | 8.84GB/s |
| Inter-Core Bandwidth vs SPEED | 2.38MB/s/MHz | 2.45MB/s/MHz |
| Inter-Core Latency(越小越好) | 43.1ns | 40.2ns |
| Inter-Core Latency vs SPEED(越小越好) | 0.11ns/MHz | 0.11ns/MHz |
| .NET Arithmetic Benchmark .NET算术运算测试 | ||
| Dhrystone .NET | 16.67GIPS | 15.81GIPS |
| Dhrystone .NET vs SPEED | 4.28 MIPS/MHz | 4.16MIPS/MHz |
| Whetstone .NET | 30GFLOPS | 29.34GFLOPS |
| Whetstone .NET vs SPEED | 7.72MFLOPS/MHz | 7.72MFLOPS/MHz |
| .NET Multi-Media Benchmark .NET多媒体测试 | ||
| Multi-Media Int x1 .NET | 30MPixel/s | 29.17MPixel/s |
| Multi-Media Int x1 .NET vs SPEED | 7.70 MPixel/s | 7.68kPixels/s/MHz |
| Multi-Media Float x1 .NET | 8.24MPixel/s | 8.16MPixel/s |
| Multi-Media Float x1 .NET vs SPEED | 2.21 kPixels/s/MHz | 2.15kPixels/s/MHz |
| Multi-Media Double x1 .NET | 16.57MPixel/s | 16.24MPixel/s |
| Multi-Media Double x1 .NET vs SPEED | 4.26kPixels/s/MHz | 4.27kPixels/s/MHz |
刚刚看到的SPEC CPU测试主要是针对处理器的硬件能力，也就是说处理器本身的性能而进行的，这个测试除了要求内存容量之外，对于其他内容的要求不高。而这次我们测试的Sisofeware则依托于平台整体进行，因此整机性能对于测试成绩也有很大的影响。
从测试中我们发现，2款测试平台的成绩基本是持平的，不过由于所使用的内存规格略有差别，在内存选项中的成绩有所差距，E3-1280平台还略处下风。整体看来，E3-1280的领先优势并不明显，这完全可以解释为两款处理器在主频上只有0.1GHz的差距。
