I have 2 i7920's clocked around 4ghz and notice that with HT turned on that generally there is no performance increase and possibly even a decrease. This is not the case with simple systems, if i am just running like 5 inputs to test 4 exits or so the HT seems to help.
Seems the higher the generation size and population size (larger search space) that HT seems to not add any benefit.
With this being the case AMD chips become a very interesting alternative. As HT enhances many of the benchmarks that Intel versus AMD chips are compared on.
With HT turned off usually a 30% drop in performance on most benchmarks is exibited. With that in case AMD might actually be much better at $230 versus 600 for a 6 core intel chip.
Any feedback would be great.
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