Correction...double sided and dual channel. If single channel not much difficulty. Mine I was fortunate to have a good stick of BT-D43's that can push 250Mhz at 2.8v 2.5/3/3/11 timings

What I mean was both using double sided chips and also using dual channels. Not saying that both situations are bad for nF2. Hope that clears things up when it comes to OC'ing the slowly being pushed back platform

Try doing it to the new UTT BH5's. Then you'll understand why. You'd be sweating bricks trying to pull decent speeds beyond PC3200

For nForce 2, it's true as double sided are hindered by talkback and stuff like that and the nF2 archtecture isn't that well designed to cope with such matters. Double sided OC'ing demands greater luck in reaching high FSB's and that also with certain sacrifices. Like for my BT-D43 double sided, I had to disable clocks-per-command in order to hit 250 Mhz.

in my experience with Hynix's, you should be able to push harder. Try 2.5/3/3/10

Up VDIMM to 2.8v and up VCORE by 10%, see how it goes