I'm just wondering if there really is any difference between these sticks of memory. Is the only difference as to what they are rated? Cause in terms of performance from the reviews of the cheaper ones people are claiming the same clocks w/ same timings as the more expensive. G.Skill Extreme Series 2x512 PC3200 - rated 2-2-2-5@200mhz ~$152 GeIL One series 2x512 PC3200 - rated 1.5-2-2-5@200mhz ~$189 G.Skill Extreme Series 2x512 PC4400 - rated 2.5-3-3-7@275mhz ~200 All TCCD memory And hell with the 2 cheaper ones I get a heat spreader on them. Which always looks cool.