Originally Posted by Wall
In order to get more memory bandwidth (for better graphics performance) do we need a motherboard that has BIOS options for FSB overclock? That is 2 questions:
Is the FSB clock the one which will also raise memory clocks?
Isn't there any OS-level application that can change these clocks?
One more thing: If I get DDR3-2400 memory which I can find somewhat cheaply here, will I be able to run it at 2400 with any motherboard?
FSB will raise memory clocks, but it is better to set the memory clock directly. There's an option in the BIOS.
Trinity is, I believe, officially rated for up to 1866MHz, but the current JEDEC standards only go to 1600MHz. So, you can do 1600MHz for sure. As demonstrated by the ASRock board, you may or may not be able to hit 1866MHz. I would think it likely you could make it to 2133MHz particularly if you play with timings. Much more than that though, is a much less certain prospect. Additionally, reviews and benchmarks have shown that FPS gains start to fall off at 1866MHz and 2133MHz is about as far as you should bother to go. So, shoot for 1600-2133MHz, depending on what your budget allows.
There are OS level applications to increase clocks, but don't waste your time with them.