Re: AMD Phenom II X4 965 Increasing Multiplier vs FSB
They're fine with base clock ("FSB") adjustments as long as you set the Hyper transport multiplier lower accordingly. If you don't do that you will get instability at around 220MHz+ because the HTT bus is running out of spec. The gains over using just the multiplier won't be noticable though so most people just use it for small adjustments to get that last bit out of their chip.
You'll see the more gains from finding your max stable overclock for the CPU and then also try overclocking the north bridge clock which controls memory and other functions. Standard it's only set to 2GHz so if you can get it to 2.5-2.8GHz it makes a noticable difference.
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