South Africa’s biggest forum. Discuss, discover, and connect with thousands of members.
I didn't know if you clock the ram down it gives me strain on NB
The northbridge has a series of straps. As you overclock, and the FSB increases the NB strap occasionally will change. What changes in the NB is the NB latencies. If you ever hit a wall and can not even overclock 1Mhz more then it quite possibly could be your NB strap. To get around this you could try a large jump of 10 or maybe even 20Mhz and see if your PC posts. If you are able to run your CPU and NB at a high strap with tighter timings, it is often times faster then running your CPU at a slightly higher clock. For example depending on the CPU, FSB, and multiplier a Core 2 Duo overclocked to 2.8Ghz may be faster than a CPU overclocked to 2.9Ghz.
Essentially, the NB has its own expected, native clock frequency. Run it faster than that (as you crank up the FSB) and you hit some interesting performance changes depending how your northbridge changes its own internal reference clock.
It was more of an issue with the P965 chipset, the current P35, X38, and X48 chipsets seem to benefit less from NB strap tweaking as MB makers have larger sorted this out, plus they also handle very high front side bus speeds much better than P965 does.