|"I was searching through Toms Hardware and found some threads, but they didn't exactly answer my questions, and once I registered I get an error when I try to access the blog"|
Why are you searching threads & blogs? The sites I listed regularly test CPUs, overclock the heck out of them & explain the do's/don'ts & why/why-nots...read the articles!
Here's a guide for you...it's a bit dated but should still give you some insight into AMD overclocking theory:
Other than that, you've got two issues that you need to understand:
1. the 1:1 ratio does NOT apply to AMD systems because there is no FSB. By definition, the FSB is the bus by which the CPU communicates with northbridge chipset, but more specifically, the memory controller which is built into the northbridge. The memory controller then communicates with the RAM. For optimal performance, it's best to have both the CPU & RAM communicating back & forth with the memory controller at the same speed...that way, there's no logjams or bottlenecks. This is the way Intel systems are built. So for example, if you have an Intel CPU that runs at 1333MHz FSB & you also have DDR2-800, you'd need to lower the RAM speed to DDR2-667 to attain a 1:1 ratio. You may be asking why? The answer is that is the 1:1 ratio relates to frequency, not DDR or QDR ratings. 1333MHz FSB runs at 333MHz frequency, DDR2-667 runs at 333MHz frequency...put it together & you have 333:333 which is the same as 1:1.
AMD abandoned this technology many years ago. On all AMD CPUs since the release of the socket 754, the memory controller is built into the CPU & they communicate back & forth at full processor speed. In the case of your 6400+, that bus speed is 3200MHz. The CPU/memory controller then communicates with the RAM on the memory bus, which runs at 400MHz for DDR2-800, or 533MHz for DDR2-1066 (Phenom based CPUs only).
2. the X2 6400+ is very close to being maxed out at 3.2GHz, that's why there's no 6600+ or 6800+ CPUs. AMD realized that 3.2GHz was the safe max for the X2 core & stopped at the 6400+. You *may* be able to get your CPU up to 3.5 - 3.6GHz, but that's about it. And that relatively small 300-400MHz increase won't translate into a significant performance boost, plus it *may* cause problems in terms of stability & temperature.