| 摘要：Nehalem架构比以往Intel处理器具有了较大的变迁，这个变迁带来了非常直接的性能提升，总结起来，Nehalem-EP/Gainestown（至强5500处理器）比Penryn/Harperton具备的主要优势有三点： |
SiSoftware Sandra是一款可运行在32bit和64bit Windows操作系统上的分析软件，它可以对于系统进行方便、快捷的基准测试，还可以用于查看系统的软件、硬件等信息。SiSoftware Sandra所有的基准测试都针对SMP和SMT进行了优化，最高可支持32/64路平台。我们利用了其中多个性能测试模块对于被测系统的性能进行了快速的测试。
有一点需要说明的是，Sandra的处理器架构性能测试是根据处理器所能支持的所有指令集中选择进行的，不同的处理器支持的指令集不同，测试使用到的指令集也就不同。例如，Nehalem在这个测试当中就可以使用SSE4.2，而Penryn就只能使用 SSE4.1，而Opteron可能就只能使用SSE3了。一般而言，由于可以使用SSE4，Intel的处理器理论性能会比较好。
|
测试对象
|
Dawning I620r-G 双路Intel Gainestown 至强 E5540 2.53GHz |
DELL PE2900 III 双路Intel Harptown 至强 E5430 2.66GHz |
|
| Processor Arithmetic Benchmark 处理器架构测试 |
|||
| Dhrystone ALU | 129014MIPS | 91006MIPS | |
| Dhrystone ALU vs SPEED | 51.05MIPS/MHz | 34.21MIPS/MHz | |
| Whetstone iSSE3 | 111000MFLOPS | 78385MFLOPS | |
| Dhrystone iSSE3 vs SPEED | 43.93MFLOPS/MHz | 29.47MFLOPS/MHz | |
| Processor Multi-Media Benchmark 处理器多媒体测试 |
|||
| Multi-Media Int x16 iSSE4.1 | 269.08MPixel/s | ||
| Multi-Media Int x8 iSSE4.1 | 199.33MPixel/s | ||
| Multi-Media Int x16 iSSE4.1 vs SPEED | 106.48kPixels/s/MHz | ||
| Multi-Media Int x8 iSSE4.1 vs SPEED | 74.94kPixels/s/MHz | ||
| Multi-Media Float x8 iSSE2 |
206.19MPixel/s
|
||
| Multi-Media Float x4 iSSE2 | 108.69MPixel/s | ||
| Multi-Media Float x8 iSSE2 vs SPEED | 81.60kPixels/s/MHz | ||
| Multi-Media Float x4 iSSE2 vs SPEED | 40.86kPixels/s/MHz | ||
| Multi-Media Double x4 iSSE2 |
113.93MPixel/s
|
||
| Multi-Media Double x2 iSSE2 | 55.75MPixel/s | ||
| Multi-Media Double x4 iSSE2 vs SPEED | 45.09kPixels/s/MHz | ||
| Multi-Media Double x2 iSSE2 vs SPEED | 20.96kPixels/s/MHz | ||
| Multi-Core Efficiency Benchmark | |||
| Inter-Core Bandwidth | 63.30GB/s | 20.54GB/s | |
| Inter-Core Bandwidth vs SPEED | 25.65MB/s/MHz | 7.91MB/s/MHz | |
| Inter-Core Latency (越小越好) |
22ns | 90ns | |
| Inter-Core Latency vs SPEED (越小越好) |
0.01ns/MHz | 0.03ns/MHz | |
| .NET Arithmetic Benchmark .NET架构测试 |
|||
| Dhrystone .NET | 29299MIPS | 10562MIPS | |
| Dhrystone .NET vs SPEED | 11.59MIPS/MHz | 3.97MIPS/MHz | |
| Whetstone .NET | 69736MFLOPS | 45399MFLOPS | |
| Whetstone .NET vs SPEED | 27.60MFLOPS/MHz | 17.07MFLOPS/MHz | |
| .NET Multi-Media Benchmark .NET多媒体测试 |
|||
| Multi-Media Int x1 .NET | 53.25MPixel/s | 31.28MPixel/s | |
| Multi-Media Int x1 .NET vs SPEED | 21.07kPixels/s/MHz | 11.76kPixels/s/MHz | |
| Multi-Media Float x1 .NET | 23.09MPixel/s | 8.68MPixel/s | |
| Multi-Media Float x1 .NET vs SPEED | 9.14kPixels/s/MHz | 3.26kPixels/s/MHz | |
| Multi-Media Double x1 .NET | 45.02MPixel/s | 24.75MPixel/s | |
| Multi-Media Double x1 .NET vs SPEED | 17.81kPixels/s/MHz | 9.30kPixels/s/MHz | |
处理器架构性能测试分为整数和浮点两个部分，在频率更低的情况下，曙光I620r-G服务器的测试成绩全面强于对比的基准服务器，领先幅度在50%~100%左右。
评论表单加载中...
