M17x overclocking-Read all posts here, asking for advice and clairification

I have a new M17x T9800 (2.93ghz), 4gb 1066 memory, GTX280's sli.

FSB and Memory are stock at 1066 each.

I read about the 1:2 timings and incremental adjustments so i set the FSB and Memory to 1200 to see how it went. System booted fine.

It was now 3.3ghz. Nice. However i recall Mandrake talking about slowing the memory down by increasing the latency. So i took note of the numbers for the memory.

8,8,8,23,31,2t at 1200
7,7,7,21,27,2t at 1066

So what i'm asking is "is this acceptable?" Or should i keep the memory at 1066 and increase the FSB to 1200 or more for the cpu overclock?

Or as some have done should i buy the kingston hyperx 1333 memory and take a new approach by down clocking that memory and oc's the FSB so that they are both 1250. I understand that each chip will perform differently, i'm asking this last question wondering about the method and if i understand what i have read here correctly.

Thank you

M17x, Nebula Red, T9800 2.9ghz, 4gb 1066 ram, 320 gb 7200 rpm hd's Raid 0, GTX280's sli, 1900x1200, Win7 Home Premium, Blue ray rom.

Dell XPS 730x, Nebula Red, Core i7 965 Factory OC to 3.74 ghz, H2c liquid cooling, 300gb velicoraptor, Blueray rom, Gtx280, 6gb 1333 ram, 1000w power, SB Titanium, Vista Ultimate, 28" monitor, 5.1 surround.

Falcon Northwest Mach V, Aluminum, Qx6850 at 3.0, 4gb Dominator 800mhz, hitachi 1tb hd, 8800GTX Ultra's sli, EVGA 780i, DVD-rw, 1000w power, Zalman 9700 cpu cooler, Win 7 Ultimate.