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I decided i'd compare the performance of two famous tweaks done to the OS to improve SSD performance. Those tweaks became famous due to the previous generation of laptop chipsets that were limiting SSD performance to preserve battery life. I'll be comparing a Vertex 3 240GB SSD on SATA III (6 GB/s) interface inside the Alienware M17x-R3. (Note : Even though the tests were made on the M17x-R3 the results are almost identical with the M18x, since they use the same chipset. I confirmed it with [MENTION=5]Brian K.[/MENTION]) I measured the performance with CrystalDiskmark in three cases. Default install without any tweaks JJB processor power state tweaks via windows power management IntelPPM tweak, brought to us by our own @StamatisX which for previous chipset models brought the best performance increase. So without further ado, here are the results. As you can see, no much gain there. Here's another look at the results, the graphs are improvement in percents over the default result in read and and write. We can see that the best performance increase is achieved with the intelPPM tweak, at 4K reads. Rest of the improvements are quite negligible - under 5% in in some cases i even saw a decreased performance. One note about intelPPM, it does seem to disable turbo boost on non-extreme CPUs so, it's quite unusable for most of us. You guys can draw your own conclusions of course, but for me, those tweaks are not worth the trouble. Another conclusion is that the current HM67 chipset does not seem to suffer from bad SSD performance, at least not as much as the previous chipset was. Opinions ?