What the heck is HTT/FSB for ocing

[videogames101]

i'm learning how to oc, what is HTT/FSB?

 

[Budman]

Have you tried reading the sticky thread at the top of this forum?

 

[videogames101]

thats why i'm asking, it talks about maxing it or something but i don't know what it is.....

 

[Budman]

Originally posted by: videogames101
thats why i'm asking, it talks about maxing it or something but i don't know what it is.....

if you dont know what you're doing then overclocking is not for you.

 

[videogames101]

well if that was true we'd have never overclocked any cpu. I've got to learn sometime, now seems as good as ever.

 

[GuitarDaddy]

It is basically the CPU bus speed. CPU mhz are calculated by HTT x CPU multi. For example a 3200+ has a max CPU multi of 10x and the stock HTT on all AMD chips is 200mhz, so 10x200=2000mhz which is the stock speed

 

[Furen]

The HTT clock generator is a chip (or part of a chip) on the motherboard (I believe) that generates the clock pulses that the CPU uses to calculate its own clock (by multiplying HTT x the CPU multi). It's also used by the hypertransport. Also called external clock, CPU clock, FSB clock, LDT clock, etc.

A thing about ram: The RAM's clock on A64s is derived from the CPU clock (and thus, indirectly, from the HTT clock)

 

[JEDIYoda]

Originally posted by: Budman

Originally posted by: videogames101
thats why i'm asking, it talks about maxing it or something but i don't know what it is.....

if you dont know what you're doing then overclocking is not for you.

Exactly!!
If part of the learning process is comprehending what your reading, then maybe at this moment in time you need to wait a few years until you learn how to comprehend what you are reading!!!

Some people ought not be allowed in a room with a computer unsupervised!!

Also remmeber if you F*$%^ something up your parents will be expecting answers!

No the dog pee`d on the computer is NOT a good excuse!!

 

[xTYBALTx]

Originally posted by: JEDIYoda

Originally posted by: Budman

Originally posted by: videogames101
thats why i'm asking, it talks about maxing it or something but i don't know what it is.....

if you dont know what you're doing then overclocking is not for you.

Exactly!!
If part of the learning process is comprehending what your reading, then maybe at this moment in time you need to wait a few years until you learn how to comprehend what you are reading!!!

Some people ought not be allowed in a room with a computer unsupervised!!

Also remmeber if you F*$%^ something up your parents will be expecting answers!

No the dog pee`d on the computer is NOT a good excuse!!

Lighten up.

 

[Buck Naked]

Originally posted by: JEDIYoda
No the dog pee`d on the computer is NOT a good excuse!!

I take it you are speaking form personal experience. :laugh:

Seriously though, slapping his hands, and telling him no will most likely not stop him from trying. So give usefull info like GuitarDaddy, and Furen.

 

[RichUK]

i would recommend searching google as this is such a broad subject, and you will be able to find a better explaination on the net, which will provide a better understanding.

This is a reply to a thread I gave a little while back. This might help you on your way, with regards to a better understanding.

🙂

 

[JEDIYoda]

actually you all are correct---I was a bit harsh!!

He has probably already used the dog pee`d on the computer excuse!!

 

[Lithan]

Actually, you should know what FSB is before you overclock. FSB exists on stock systems too.

 

[charloscarlies]

I agree with him though that he has to start somewhere. Why not just hang around the forums for a little while and learn a little.

 

[Bona Fide]

FSB = Intel
HTT = AMD

Apart from that, they are exactly alike. It is the frequency at which the CPU sends information. On AMD systems, this is always clocked at 200MHz, and a multiplier is added to generate the necessary speed. By dividing the listed speed by the HTT speed, you can easily find out your multiplier.

AMD64 3000+ = 1800MHz/200MHz = 9x Multi
AMD64 FX-57 = 2800MHz/200MHz = 14x Multi

Those are the lowest and highest multipliers of any AMD64 CPU currently out.

How they relate to overclocking.

Obviously, the easiest way to raise your CPU's overall speed, is to raise the bus speed. AMD's multipliers are downwards-unlocked, which means you can lower them, but you cannot raise them. The FX series is fully unlocked, which means you can raise or lower them as you like. Almost all of Intel's CPU's have locks on the multipliers.

Raising your HTT/FSB can have substantial impacts on speed, due to the nature of the CPU multiplier. For example...

200MHz * 9 = 1800MHz

That is the standard 3000+ processor. But if we raise the HTT by 50Mhz...

250Mhz * 9 = 2250MHz

In this case, a 50MHz increase in the FSB gave us a 450MHz overall increase. And with higher multipliers, you'll get even better results.

Refer to Zebo's guide for voltage, heat, and benchmarking.