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Should an nForce 4 chip run any faster than 246MHz? I decided to try and find my external buses maximum frequency by lowering the memory speed and cpu speed with a divider and lower multiplier, and this is the highest frequency I can get the system to post. any higher and I get jarbled text, or no display at all, or the CMOS states it is putting the system in safe mode due to the frequencies.<br />
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The chipset is running at 30 degrees C. Surely it can go a bit higher than this?
 

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Originally Posted by <strong>alk</strong>

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<div style="font-style:italic">Should an nForce 4 chip run any faster than 246MHz? I decided to try and find my external buses maximum frequency by lowering the memory speed and cpu speed with a divider and lower multiplier, and this is the highest frequency I can get the system to post. any higher and I get jarbled text, or no display at all, or the CMOS states it is putting the system in safe mode due to the frequencies.<br />
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The chipset is running at 30 degrees C. Surely it can go a bit higher than this?</div>

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I've heard that on the Intel based boards it caps at 333mhz...for the ASUS deluxe SLI's anyway.
 

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It shouldn't be limited. I have my FSB at 250 stable. I did some playing one day and saw speeds up to 265 but not very stable. I am limited by my CPU and voltage. You should be able to get higher!!
 

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Discussion Starter #4
Its a budget board (The one in my sig) though. Is there a way to increase the chipsets voltage?
 

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246 doesnt sound high enough? Have you got the PCI at 100 MHz. <br />
Even the little Albatron Micro ATX NF4 I am using will do 340 stable.<br />
Maybe some just won't pull their weight.
 

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Originally Posted by <strong>alk</strong>

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<div style="font-style:italic">Should an nForce 4 chip run any faster than 246MHz? I decided to try and find my external buses maximum frequency by lowering the memory speed and cpu speed with a divider and lower multiplier, and this is the highest frequency I can get the system to post. any higher and I get jarbled text, or no display at all, or the CMOS states it is putting the system in safe mode due to the frequencies.<br />
<br />
The chipset is running at 30 degrees C. Surely it can go a bit higher than this?</div>

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</div>You very well could have hit the max fsb for that motherboard.<br />
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246MHz is low for all the nf4 chipsets I have used. Even my cheap o MSI K8N Neo4-FX will run 295mHz.<br />
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Have you increased the chipset voltage and CPU voltage ?
 

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NF4 is not the cause, as you may have found it's the MB desigh thats limiting it. <br />
Perhaps some digging may find a modded BIOS to allow more adjustments.<br />
Rather odd, most NF4 MBs that OC can do at least 270.
 

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It depends, I can get my Gigabyte GA-K8NXP-Sli board to 310Mhz. Maybe try a bit more voltage to the chipset ?
 

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Discussion Starter #9
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Originally Posted by <strong>The Duke</strong>

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<div style="font-style:italic">NF4 is not the cause, as you may have found it's the MB desigh thats limiting it. <br />
Perhaps some digging may find a modded BIOS to allow more adjustments.<br />
Rather odd, most NF4 MBs that OC can do at least 270.</div>

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</div>I should have maybe made it clearer. I have the latest BIOS, and it allows adjustment of the FSB well beyond 246 MHz.<br />
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EDIT: how do I alter the chipset voltage?
 

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Unsure what it's called in yout BIOS, HTT, NB, LDT...
 

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By the looks of things <a href="http://www.extremetech.com/article2/0,1697,1782881,00.asp" target="_blank">this</a> board if I have the correct one may not be the overclockers friend.
 

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Discussion Starter #12
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Originally Posted by <strong>tuchan</strong>

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<div style="font-style:italic">By the looks of things <a href="http://www.extremetech.com/article2/0,1697,1782881,00.asp" target="_blank">this</a> board if I have the correct one may not be the overclockers friend.</div>

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</div>Yup, I already knew it wasnt a good board. Im just trying to see how far it'll go, and by the sounds of the review (which I have read before) dont seem to know how to use memory dividers! <img src="/images/smilies/tongue.gif" border="0" alt="" title="Stick Out Tongue" class="inlineimg" /><br />
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at least Im not capped at 205 MHz!
 

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Discussion Starter #13
uh oh... Think the PSU is cooking! BIOS is set to +125mV and stock is 1.35V. Gues whats displayed in CPU-Z? 1.35V. Its a cheap PSU, so maybe this is the problem? Also the PSU i throwing out VERY hot air. Which is usually moderately cool.
 
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