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For this next batch of results we are using the Unganged mode and locking the memory frequency at 1333MHz. This is a latency test to see how various memory timings impact performance, so we will be testing the DDR3 memory with timings of CAS6, 7, 8 and 9. This will help us determine if the AM3 platform is sensitive to timings.  First up we have used EVEREST Ultimate Edition once again to measure the memory bandwidth of each configuration. Again we find that regardless of the settings, the write performance remains very much the same. The read performance does on the other hand change, with an 8% difference between the CAS6 and CAS9 configurations.  This had a mild impact on the WinRAR performance, and again we saw an 8% performance difference between the CAS6 and CAS9 configurations, at least for the single thread test anyway. When running the multi-thread test there was just a 6% performance margin favoring the CAS6 configuration. There was almost no difference between the CAS6 and CAS7 configurations. However there was a noticeable drop between the CAS7 and CAS8 configurations, and while it was nothing extreme, the biggest single drop was seen here.  However when it came to gaming, the only configuration that was a little off the pace were the CAS9 timings. That said, at 1920x1200 where the GPU was the bottleneck, the CAS9 timings matched the CAS8 and CAS7 configuration. It would seem that those interested in gaming performance should not concern themselves with memory timings on the AM3 platform, and this is much the same case with the latest Intel Core i7 processors. |
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