Celeron Dual Core T1400 from 1.73 to 2.16

I've overclocked a T1400 using a the BSEL mod (more about it in my sig).
I was able to push the FSB from 133 to 166 without any problems. I tried 133 to 200 but can't get it to work. The laptop switches itself off after few seconds.

I think that the laptop when running at 200 FSB is running the memory at 400Mhz (1:2 divider). Do you think that the memory is holding me back? what type of memory should I use?

Edit:
The memory I have now is PC5300

 

Doesn't the FSB:dRAM ratio change when you do the BSEL mod?

So the ram should be running at 333mhz even if you take the FSB to 200mhz?

 

I'm not sure if actually the laptop I've used for the mod has a divider to allow the ram to run at 333mhz.

On the post above mine the ram seems to run @ 400mhz (same CPU)

Edit:
The ration was 1:2 with both FSB 133 and 166. So the ram without mod was running at 266 instead of 333mhz

 

Well yeah, there is no real point at running the memory at a higher frequency anyway. I have experimented with this this stuff as well. I got the T1400 running at 2.6Ghz, but it passed POST only a couple of times when I had a desk fan blowing on the heatsink and I undervolted it. These processors were definitely at the bottom of the Merom heap, so no doubt that not all of them can operate at such a high speed. I happen to have a dual-core desktop celeron of the same stepping, and with the stock cooler (still better than any laptop) it can't go over 2.8Ghz, and under a high end heatsink it tops out at 3.2Ghz. Another thing to remember is that the power regulation circuitry on even my cheapest desktop board is far more capable than that of any laptop.

What I really want to find is a decently priced T3300, as I'm sure it will be able to run at 266Mhz FSB. E0 and R0 penryns are far more refined than their predecessors and there is not the discrepancy between the low end and high end products. The Celeron in my sig is a testament to that, but most of my overclocking and tinkering work takes place on the desktop, where I have seen bottom end processors clock on par with higher end processors. Unfortunately, I have been looking for a very long time for a T3300 but have yet to come across one that is cheaper than higher end ES or Apple Core 2.

 

I guess your right. The T1400 is not good past FSB 166.

 

Yes it seems that the T1400 cannot go past FSB 166. I tried a Celeron M540 and it works with FSB200. So now it is running @ 2.8Ghz instead of the original 1.86Ghz