HTT a property of MOBO, right?

Are you referring to HyperTransport, and how fast it runs? In all Athlon 64's, X2's, FX's, it runs at 1 GHz double pumped. (2 GHz effective) The 1 GHz is derived from a HyperTransport multiplier and the FSB of the processor.. a max FSB of 325, from what it sounds like for you, would mean you could have a HT link speed of 1625 MHz (3250 effective) at the standard multiplier of 5x. Hypertransport speed is the same on ALL 64's, X2's, and FX's. I forgot which processors have a lower speed, I think it's the old S754's.

If that doesn't answer your question, sorry.

I a recent tom's article, "overclocking 2", the following was sad:

"Achievable HyperTransport clock speeds average around 350 MHz for this board."

This clearly means that HTT is a property of the board, right?

huh?

HTT refers to Hyper Threading Technology and is used by Intel. HT refers to Hypertranpsort and is *mainly* used by AMD.

Yes. Hypertransport is a property of the mobo. Specifically Hypertransport is a high speed low latency bus interconnect. Here's an article about Hypertransport, give it a read. HT's main implementation for the desktop computer has been for processors with an Integrated Memory Controller (IMC) and works as a front side bus replacement by eliminating the need for a northbridge chip to in order for the proc to communicate with the memory. Most nVidia nForce mobos for AMD are good examples of HT implementation. Also, since HT is an interconnect, it can be used to link the chips on a mobo, like the link between the northbridge and southbridge chips.

As far as a HT limit of 325, you may want to read the mobo manual and be sure you're not looking at the CPU frequency, because the typical HT link BIOS choices are AUTO, 200, 400, 600, 800, and 1000MHz. This is not say that there may not be limits on the speed of the HT link depending on the chipset, implmentation, and mobo maker. Some of the confusion may be in the fact that the cpu to RAM HT link on most mobos runs at the same speed as the processor, and if the processor is limited to only 325MHz, which in turn would reduce the overall speed of the cpu to RAM HT link.