Notes on the Complexity of Measuring True Performance
Differences with DAW Stress Tests

©AGRONOVA/Anders Fahlén
2006-01-18 First edition

Page 2 of 3
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Impacts of memory timing & bandwidth differences on DAW stress test results

CPU frequency and memory bandwidth/timings have significant impacts on audio stress test results – keeping other variables constant. The performance difference usually increases as latency setting values become smaller as illustrated by the following graphs:

Figure 3. Influence of CPU frequency on CPU load (%) as measured by the Sonar 3 test. All other BIOS/Host software settings and hardware configurations kept constant. Input data based on user reports submitted to the Sonar forum.

Figure 4. Influence of memory timings on CPU load (%) as measured by the Sonar 3 test. All other BIOS/Software settings and hardware configuration kept constant. Input data based on user reports submitted to the Sonar forum.

Figure 5. Influence of host multiprocessing mode on CPU load (%) with AMD 64 X2 dual-core CPU as measured by the Sonar 3 test. All other BIOS/Software settings and hardware configuration kept constant. Input data based on user reports submitted to the Sonar forum.

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