"cellshock is not bad" ... its rated as one of the best available on the market today. Guaranteed D9GMH, 8 layer PCB, solid heatspreaders. If money isnt such a factor id plump for the Cellshock but if your trying to save the pennys there is nothing wrong with the GSkill or any other memory for that matter. Depends entirely on how high your aiming to get your overclock and at what timings.