Tom's Hardware > Forum > Overclocking > General Discussions > FSB/HTT
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falsterbo   05-06-2006 at 12:16:09 PM

I got my machine running with these settings:
Core Speed: 2906MHz
vCore: 1,425v
Multiplier: 11x
HTT: 264MHz
Ram: 1,66x (1,66x264 = 438MHz)
vRam: 2,75v

Will I gain anything if I higher it too these settings?:
Core Speed: 2916MHz
vCore: Hopefully the same
Multiplier: 9x
HTT: 324MHz
Ram: 1,33x (1,33x324 = 431MHz)

Will more HTT give me anything? Because I cannot get the CPU to be Prime95 stable over 2930MHz...

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x86_64   05-06-2006 at 11:11:04 PM
- 0 +

First off sir, I think you deserve a medal. Being able to overclock that San Diego on that motherboard to 2.9GHz is a freakin' accomplishment, good job.

On to the topic:

Having a faster FSB (HTT) will provide faster overall performance for the CPU, but it may force you to run the HTT Multiplier (5x by default) from it's stock to probably 3x (3x324) though try 4x and hell, try 5x, if it's stable, run it!

I wouldn't expect a "OMG THAT'S ORGASMIC!" increase in performance, because it won't happen. Only reason I say don't do it is having a higher FSB means "I need more volts!" and you probably will have to hit 1.45v or higher to get 324MHz FSB vs. 264MHz FSB. That, and your RAM is 7MHz slower. I would stick to what you got, unless you can get RAM to 166x324.

-x86_64

Reply to x86_64
mesarectifier   05-06-2006 at 11:49:08 PM
- 0 +

Looking good, but it seems your pushing that system pretty far already. If you're doing that on air, rather than increasing HTT speed the logical advancement would be water cooling.

As far as upping the speed now, if the difference between prime stable and unstable is 26mhz, that should be telling you whether or not to advance it.

Reply to mesarectifier
angry_ducky   05-07-2006 at 12:06:48 AM
- 0 +

Quote :

I got my machine running with these settings:
Core Speed: 2906MHz
vCore: 1,425v
Multiplier: 11x
HTT: 264MHz
Ram: 1,66x (1,66x264 = 438MHz)
vRam: 2,75v

Will I gain anything if I higher it too these settings?:
Core Speed: 2916MHz
vCore: Hopefully the same
Multiplier: 9x
HTT: 324MHz
Ram: 1,33x (1,33x324 = 431MHz)

Will more HTT give me anything? Because I cannot get the CPU to be Prime95 stable over 2930MHz...



I wish my Sandy would overclock like yours.

Reply to angry_ducky
falsterbo   05-07-2006 at 12:28:52 AM
- 0 +

Quote :

First off sir, I think you deserve a medal. Being able to overclock that San Diego on that motherboard to 2.9GHz is a freakin' accomplishment, good job.

On to the topic:

Having a faster FSB (HTT) will provide faster overall performance for the CPU, but it may force you to run the HTT Multiplier (5x by default) from it's stock to probably 3x (3x324) though try 4x and hell, try 5x, if it's stable, run it!

I wouldn't expect a "OMG THAT'S ORGASMIC!" increase in performance, because it won't happen. Only reason I say don't do it is having a higher FSB means "I need more volts!" and you probably will have to hit 1.45v or higher to get 324MHz FSB vs. 264MHz FSB. That, and your RAM is 7MHz slower. I would stick to what you got, unless you can get RAM to 166x324.

-x86_64



Thank´s man!

I am running my HTT at 4x because it feels better than running it at 5x (1320MHz)...

My ram can handle 550MHz, BUT my stupid motherboard cannot handle that speed because of that I have 4x 512Mb... So if I go to FSB 272Mhz and then a core speed of ~3000MHz, it won´t be Prim95, SuperPi and 3DMark stable any more...

So my question is, do I really gain anything of going from FSB 264MHz to 332MHz and lowering my ram to 1,33x and HTT to 3x? Because I am going to lower my Multiplier to 9x...

Reply to falsterbo
x86_64   05-07-2006 at 02:47:56 AM
- 0 +

If your RAM is the problem, try increasing the voltage to the RAM, as well as try to raise the latencies of your RAM, it will increase stability at those higher clock speeds.

-x86_64

Reply to x86_64
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