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To much free time.

post #1 of 10
Thread Starter 
There seems to be a never ending flow of questions from new people regarding the impact of command rate and HTT bus speed on performance and I am sure somewhere someone has quantified it, but since I had way to much free time I decided to run a couple of experiments to see if I could quantify what the actual impact of each was.

The first test I set up varied the HTT bus by changing the multiplier. One set of benchmarks was run using a 5x multi (1000mhz) and the second was run using a 3x multi (600mhz).

The second test I set up varied the command rate by simply changing from 1T to 2T.

In both tests all other parameters were left at default settings, the only things changed were the HTT muti and the command rate.

All benchmarks were run three times at each setting and an average established for that benchmark. The two averages were then compared (i.e. 1T vs 2T), and the percentage figured for the difference between the two.

The results of changing the HTT bus speed from 1000mhz to 600mhz were negligible at <1% across all benchmarks.

The results of changing from a 1T command rate to a 2T command rate were a little more visible, but again, with the exception of 2 out of the 6 benchmarks the results were around 1% with Aquamark and Winrar bench showing about 2% and 3% respectively.

This is in no way a definitive evaluation of the impact of these two variables but I think it clearly demonstrates that outside the realm of hardcore benchmarking users are not going to see much difference.

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post #2 of 10
Very thoughtful of you to do a little looking into a fairly common question.
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post #3 of 10
too*

Good effort
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post #4 of 10
Thread Starter 
Thanks
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post #5 of 10
Nice man!
    
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post #6 of 10
Thread Starter 
Thanks again, hope it helps someone .
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post #7 of 10
Nice. Rep +
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post #8 of 10
Nice work
    
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post #9 of 10
Thread Starter 
Thanks again.
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post #10 of 10
ditto.
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