This kit has amazing visuals, and it performs very well for the price. OCZ includes a great warranty with these as well as their always - dependable customer support. On the flip side, these modules do not respond in any way, shape or form to higher voltages. Anything above 2.25V for CL4 and 2.2V for CL5 would cause the test computer to crash upon startup. This kit held its ground and reputation when proving to be stable at DDR2-1002, 4-4-4-12 with only 2.25V. There is no need to run a fan above these modules, seeing as they did not heat up too much through several of the vigorous tests (Thanks to the XTC technology).