the 1600 and 2000 figures are not MHz i think, but rather in million transfers per second. Don't you just love marketing speak?

LDT x HTT is the clock speed rite?
HTT x HTT multi is the HTT speed at 1000mhz, etc?

Technically LDT is actually HTT.
LDT = Lightning Data Transport (a previous name for HTT)

As I mentioned in previous posts, HTT base clock is 200MHz. With a multiplier of 4 or 5, it is running at 800 / 1000MHz respectively. It is marketed as 1600MHz / 2000Mhz bcoz it acts like a dual HT bus, each bus transfer data at one direction.

i checked on cpuz .. my HTT is 1000+ like tat ..
is it normal ?

It is normal as long as its -+5% of the original 1000mhz speed.

How do i check the HTT?

You can the HTT using the CPUZ utility.

Hey peeps!, i wanna try o/c my processor.

N00b here, so far i see u all lower down yer HTlink from 1000+mhz to 200-400mhz range to compensate (less burden the mobo?) rams speed increments izzit?..

Btw, do anyone has the same processor i have?.. if yes, could u post here yer settings?..

My cpu-z


Cheers

Yes it's correct to lower the HT multiplier to the closest multiplied value of the equivalent of 1000Mhz. This is because current HT specification states maximum required bus speed is that amount. Exceeding would be pointless as you will not gain anything except possible instabillity. So let's say if you plan to OC your PC to FSB 250Mhz, you should lower that HT multi to 4 (from initially 5) so that 4*250=1000Mhz. Having a lower HT bus speed will not affect your PC's performance as currently, the design is not enough to even saturate the specified bus speed. As for setting's very hard to compare as you would need specify what RAM's you're using as well as the mobo itself. It varies accordingly to be honest.

AAAaah.. finally a reply

Hmmmz... its sounds similar when o/c SocketA (increase FSB or Multiplier), but i read they said differently...

So, basically its the same rite?.. instead of "multiplier" in SocketA, i have to play around with "HT multi" rite?...

Tell me if im going the right way..
First, i try go highest FSB as possible, for example 250, but unstable.
So, i lower down to 244, which its stable.
Then the next thing its to try increase the "HT multi", and so on... right?..

Thx man, i'll try as soon as i can..lol

Cheers

This post has been edited by TomatomanzSeedlezz: Mar 29 2007, 11:47 PM

As you can see from previous posts, increasing HTT speed doesn't have any performance gain at all, and you get higher power consumption. You can just set it as 1x and pump whatever base clock you want as long as your motherboard can handle it. FYI, FSB is FSB, HTT is HTT. There is no relation between them.

I have reason to speculate that when using integrated graphics chipsets, increasing the HTT speed may bring pretty substantial improvements. This is because on K8, the integrated gfx has to go via HTT to the CPU in order to access its memory pool, and this makes it slower than the intel version which allows the integrated gfx to directly access memory because the nb handles memory as well. This may be another motivation for AMD to push their fusion initiative, since it may help boost integrated gfx performance quite nicely.

I'm just speculating, maybe someone who has the time and the means may want to look into this.

Hi, i just got my mobo today, below are the specs.

AMD Athlon 64 x2 4200+ windsor
Kingston DDR2 667 1gb
Asus 7300gt DDR3
Abit Kn9 Ultra

Im new to AMD chips because all this while been using Intel, what is this HTT and FSb and stuff and how to OC it...i still dont understand after reading various threads from google x_x can anyone help me out? thnks!

It is stated quite clearly from page 1 to 2 in this thread. Please state specifically which aspect you don't understand so that we can help you more on problem.

i dont understand that, my cpu/ram ratio is different each time i try to OC, i set it to 533mhz for ram, and the cpu multiplier at 9.5, i managed to get this so far =/

and my 3dmark03 score is 8790 with the above, isnt it a bit low? because i was checking it out at google x_X

another thing is, how come pc wizard says my cpu fan is at 8k rpm? and cpu and mainboard temp at 144 x_X

I think the PC wizard has problem detecting ur latest motherboard, that's y giving weird readings.

For your doubts in HTT, here is the answer:

Base clock = 250MHz. This is the HTT clock you set in BIOS.

CPU = multiplier x base clock
RAM speed = CPU speed / 7 = multi * base clk / 7

'7' is actually determined by your FSB:RAM ratio set from BIOS. This is very misleading because we can NEVER set this ratio, since we no longer has FSB. The ratio are actually a set of numbers called memory speed divider.

For your case, when base clock is 250MHz, and u set set it FSB:RAM = 3:4
FSB: RAM = 250MHz : 333MHz. <- your RAM is suppose to run at 333MHz.

RAM speed is derived directly from CPU speed. In your case, CPU speed = 2375MHz. In order to get 333MHz RAM speed, the divider should be 7.125x. However, there is no 7.125x divider. All dividers are in integer form (1,2,3,4,5,6,7.....), so the closest to 7.125x = 7x.

So your RAM speed now is 2375 / 7 = which is 339MHz.

Ah i see, i think i understand the concept a little more clearly.

But i do have a question, when i set 250 x 9.5 = 2375 right? But when i set 238 x 10 =2370, the memory divider becomes 8 =/ how come ar? is there a reference i can look at?

because your baseclock changed. remember FSB:RAM? it is actually baseclock:RAM.

Using the same 3:4 setting, your target RAM speed at 238MHz is about 317MHz.

10x238 = 2380MHz
2380MHz / A = 317MHz
A = 7.5x

That's why u r rounding to 8x. I don't have the reference table, but i guess simple mathematic can solve your problems

This post has been edited by c38y50y70: Apr 16 2007, 07:15 PM

O, now i know xD, sorry ya, im new to amd procs and its functions =p...thx for the info!

u running single channel instead of dual because of ur single ram...upgrade...hehe...