The chaps over at MadShrimps take a look at 4 memory kits that are positioned at the upper end of the performance spectrum. Let's find out which kit comes out on top:

Mushkin PC8000 Redline
+Great looking "frostbite" heatspreader
+Performance scales extremely well with additional voltage
+good price/performance ratio in its class
-Limited voltage warranty
-Lower voltage means (slightly) lower performance than the other kits

OCZ PC8500 Platinum
+Heatspreader design still looking very good
+Honeycomb grille serves cooling very well
+Excellent performance on cas 4
+EPP programming included, SLi certified
+Good price/performance ratio in its class
-cas 3/5 performance not scaling very well
-not much headroom left with (even) higher voltages

Team Group PC6400 "3338"
+The absolute n°1 performing kit so far
+Scaling with additional voltage is exceptional
+EPP programming included (but not nVidia certified)
+Excellent price/performance ratio
-Basic heatspreader design means fanless operation is not recommended
-2.45V warranty, or is it 2.35V ?
-too sober looking for some

Corsair Dominator PC8888C4
+Heatspreader design is ground braking
+Included, silent fan assembly
+Highest scaling kit on cas 3.
+Excellent performance on cas 4
+EPP programming included, SLi certified
-cas 5 performance not scaling very well
-does not scale any further with (even) higher voltages
-expensive compared to the other 3 kits, even counting the fan assembly