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Home > Hardware Reviews > PC Parts

Monday, December 05, 2005
Intel Pentium 4 650

3. SiSoft Sandra 2005

SiSoftware Sandra is a 32-bit and 64-bit Windows system analyser that includes benchmarking, testing and listing modules. It also provides information about the CPU, chipset, video adapter, ports, printers, sound card, memory, network, Windows internals, AGP, ODBC Connections, USB2, Firewire, etc.

The CPU Arithmetic benchmark tests how your CPU stacks up against other typical combinations:

Multi-Processor (SMP) support for up to 32/64 CPUs & SMT
- Test takes about 20/30 seconds on P6-class PCs
- Test is repeated 3 to 5 times to get a realistic result
- Results outside the confidence limits (5%) are discarded
- Command Line Switch: CPUAABench
- Requirements: None
- OS (Win32) Support: Windows 2000, XP, 2003
- OS (Win32 CE) Support: PocketPC 2000/2002/2003, SmartPhone 2002, 2003
- OS (Win64) Support: Windows XP/2003

Sandra's CPU arithmetic benchmark suite uses 2 famous benchmarks (Dhrystone and Whetstone) for stress testing the processor. Also, it includes a new version of the Whetstone test that makes use of a processor's SSE2 instructions to show the performance boost an application might gain should it be optimized for SSE2. Unfortunately, this does not always represent true real-life performance, but is useful for comparing the speed of various CPUs.

With Whetstone and WhetstoneiSSE2, both Pentium 4 processors had better performance than the AMD 3800+, which however outperformed the Intel processors in the Dhrystone test.

The CPU Multi-Media benchmark tests how your CPU stacks up against other typical combinations:

- Multi-Processor (SMP) support for up to 32/64 CPUs & SMT.
- Test takes about 20 seconds on P6-class PCs.
- Test is repeated 3 to 5 times to get a realistic result.
- Results outside the confidence limits (5%) are discarded.
- Command Line Switch: CPUMMBench
- Requirements: MMX (Enhanced), 3DNow! (Enhanced) or SSE(2/3) recommended
- OS (Win32) Support: Windows 2000, XP, 2003
- OS (Win64) Support: Windows XP/2003

The test has two parts:

Integer test - using integer data:
- MP SSE3 is used for better performance if supported.
- MP SSE2 is used for better performance if supported.
- MP SSE (Streaming SIMD) is used for better performance if supported.
- MP Enhanced MMX is used for better performance if supported.
- MP MMX is used for better performance if supported.
- MP ALU is used otherwise.
Floating-point test - using floating point data:
- MP SSE3 is used for better performance if supported.
- MP SSE2 is used for better performance if supported.
- MP SSE (Streaming SIMD) is used for better performance if supported.
- MP 3DNow! Enhanced is used for better performance if supported.
- MP 3DNow! is used for better performance if supported.
- MP FPU is used is used otherwise.

This test involves the generation of Mandelbrot Set fractals that are used to realistically describe and generate natural objects such as mountains or clouds. By using various multi-media extensions (MMX), 3DNow! and SSE(2/3), better performance is achieved.

The P4 processors reported much better results, especially in the floating-point department, probably due to SSE3 instruction support.




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