quick HTT question

[PoopyPants]

this will sound silly but i guess i never really needed to ask.

Is HTT technically your motherboard or your CPU. i guess i know htt is just FSB. but when you talk HTT and you raise HTT is it actually your mobo your messing with. which inturn adjusts the cpu ? or is it a direct kick to the cpu.

like your cpu multi is your cpu and mem freq is your memory.

im asking cuz of things like 250mhz AMD64 bug and HTT limits.

im bout ready to rma this mobo cuz of the 270mhz HTT limit. no matter if i run on a divider or not 270mhz is the tops.
you suppose AMD or MSI would warrenty their product for this issue ? (its not an OC issue that i would rma its the faulty controller)

NEO2 Plat w/ 3500+ Newcastle 1gig OCZ PC4000 EL Gold Rev2

 

[Siddy]

CPU, the mobo figures manipulate the CPU FSB, so u change it by the mobo, but its the CPU that its affecting

 

[Peter]

So many abbreviations, so much bull on the web.

What's being referenced as "HTT" all the time is the system reference clock, 200 MHz normally. This is NOT the frequency of any bus on the system (remember, there is no FSB!). Rather, the actual HyperTransport bus frequency runs at a multiplier from that clock, x4 or x5 depending on CPU model. The CPU core and memory controller frequency are on an independent multiplier, e.g. x12 for a 2400 MHz processor.
With the memory controller inside the CPU core, the memory _bus_ frequency is divided down from CPU core, _not_ at a ratio from system clock. E.g. PC2700 RAM on a 2400 MHz processor would be clocked at CPU/14, PC3200 at CPU/12.

That's how it technically works. Note how completely different that is from north bridge centered previous architectures. People who still say FSB, talk of FSB-synchronous memory, "running on a divider" or similar things have simply failed to grasp the new concept.