Getting System to run 1:1

phantasm

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Oct 7, 2006

• Feb 20, 2007

• #1

Ok, so my system right now is running 2 to 3 between FSB and DRAM.

It's the system in my signature, memory has been manually set to 4-4-4-12 and DRAM Frequency is at DDR2 800. I've take nthe advice in this thread(System Rebooting) and can't get it change.

Everything is running at stock speeds right now.

 

largon

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Apr 3, 2005

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Suomi Finland

• Feb 20, 2007

• #2

You'r running stock CPU frequency (9x266MHz) with a divider @ 2:3 (266MHz * 1.5 = 400MHz = DDR800)

In order to get it to 1:1:

1. Raise the FSB to 400MHz and set "DRAM frequency" found in "Extreme Tweaker" to "DDR2-533MHz".

OR

2. Ignore the FSB and set "DRAM frequency" to "DDR2-533MHz" .

 

Last edited: Feb 21, 2007

Volt

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Apr 18, 2006

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Phoenix, Arizona

• Feb 20, 2007

• #3

Check this thread out at XS. I'm positive you'll find your answer there.

http://www.xtremesystems.org/forums/showthread.php?t=125865

 

OP

phantasm

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Oct 7, 2006

• Feb 20, 2007

• Thread Starter
• #4

THanks for the info. I'll dig through the XS thread later. All i got from the first page was a bunch of people yakking about RD600 boards.

 

largon

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Apr 3, 2005

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Suomi Finland

• Feb 21, 2007

• #5

phantasm,
I see in the other thread you were advised to set "DRAM frequency" to "DDR2-800MHz".

OnDborder said:

set it to 800. That means your running 1:1 if you have your, if your bios is like mine, cpu freq set at 400.

Click to expand...

This is why CPU-Z shows "2:3". selecting the "DDR2-800MHz" option forces RAM to a frequency 3/2 x FSB (FSB = "CPU frequency" in Asus bios).
Set it to "DDR2-533MHz" (1 x FSB) and report here.

 

OP

phantasm

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Oct 7, 2006

• Feb 21, 2007

• Thread Starter
• #6

largon said:

phantasm,
I see in the other thread you were advised to set "DRAM frequency" to "DDR2-800MHz".This is why CPU-Z shows "2:3". selecting the "DDR2-800MHz" option forces RAM to a frequency 3/2 x FSB (FSB = "CPU frequency" in Asus bios).
Set it to "DDR2-533MHz" (1 x FSB) and report here.

Click to expand...

Ok, that did it. So if I wanted to keep it at DDR2 800 frequency than i' dhave to OC the CPU correct?

Last time i OC'd anthing it a pressy. lol. Never used an Asus board until now either.

 

largon

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Apr 3, 2005

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Suomi Finland

• Feb 21, 2007

• #7

Yes, if you want to run 1:1 with RAM at DDR800 you have to raise the FSB to 400MHz, thus OC'ing the CPU.

The options in "DRAM frequency" are really just memory multipliers, they do not lock the RAM to a given MHz:
"DDR2-533MHz" = FSB x 1
"DDR2-667MHz" = FSB x 1.25
"DDR2-800MHz" = FSB x 1.5
"DDR2-889MHz" = FSB x 1.67
"DDR2-1066MHz" = FSB x 2

 

OP

phantasm

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• Feb 21, 2007

• Thread Starter
• #8

Ok, makes sense. Now to figure out how to OC the CPU to get it to 1:1 and DDR2 800.

 

largon

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Apr 3, 2005

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Suomi Finland

• Feb 21, 2007

• #9

FSB x multiplier = CPU frequency

Stock E6600:
266MHz x 9 = 2400MHz

->

E6600 @ FSB400:
400MHz x 9 = 3600MHz

FSB is called "CPU Frequency" in Asus Commando BIOS.
Set it to 400MHz and you'r running 3.6GHz.

But be aware that it's highly unlikely that 3600MHz would be anything close to stable on stock vcore and cooling, so prepared to bump the voltag.

 

OP

phantasm

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Oct 7, 2006

• Feb 21, 2007

• Thread Starter
• #10

Bumping voltage shouldn't be bad. I have watercooling still to install in the system aswell. Hopefully i should be alright. I'd love to run this beast at 1:1 with DDR2 800 and the E6600.