ADATA Vitesta Extreme Edition DDR2 800 Memory Reviewajmatson -
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To my surprise, these were a joy to overclock. All I did was add a memory divider to raise the speed of the modules to 1066MHz and up the voltage to the specified 2.1 volts and they booted with no problems at all. This is the first set of ram that I did not have to perform trial and error too much to get them overclocked. That is one of the benifits of having a set of ram with good overclockable chips on them. On a side note, I do recommend active cooling when you are overclocking memory modules, but I especially emphasize it for the Extreme Edition set. These did get quite hot to the touch more than the other two, but I did not have any stability issues with them from the heat. For testing purposes, I only overclocked to 1066MHz with 5-5-5-15 timings stable, which is a 25% increase. However I did get them to boot at 1185 MHz, but Windows would not load, nor did it pass memtest version 1.70. For optimum running performance, I had the RAM set at 900MHz (450x2) with timings of 5-5-4-14 at 2.0v. This offered the best performance to stability ratio and allowed for me to keep this running 24/7 with no problems. The highest that this set would run on the stock timings of 4-4-4-12 were 428MHz or 856MHz. After that, I had to increase the timings to get them to boot up and pass the tests. As a noted, I did find out from ADATA's website that this set is guaranteed to run at 1066MHz with timings of 5-5-5-15 and at 2.2 - 2.3 volts. This information is not posted anywhere on its packaging or the manuals.