Why can't I use 1:1 FSB/memory setting?

A

Appa

2[H]4U
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Oct 22, 2005
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Ok I'm trying to learn how to overclock this 680i and my e6600. However, I'm having one massive issue. Whenever I set my memory to "Linked" and try to use the 1:1 setting, my Asus striker refuses to boot. I'm setting hte QDR FSB to 1330mhz with 1:1 and I'm using Dominator 8500 memory. So if I understand this correctly:

1330mhz QDR = 332.5 mhz X 9x multi = 2.9GHz


so thats only 665mhz for my memory right? It shouldn't be a problem. So what am I doing wrong? :confused:


Oh, and even if I set 1:1 in bios, CPUz says I'm running at 1:2

wtf I'm so confused.
 
cpuz often reads stuff like memory timings inaccurately at best, especialy with new hardware like this. although im not farmiliar with the 680i chipset, i dont think the equation you are using is correct.

1330mhz QDR = 332.5 mhz X 9x multi = 2.9GHz
Click to expand...

1330mhz QDR does not equal 332.5 mhz X 9x multi which does not 2.9GHz

1330mhz does not equal 2.9ghz either. i think you are on the right track but the numbers arent balancing. i have this formula on my computer, but of course im not at my house :p and cant find it quickly on google. try looking into your formula to start. hopefuly someone who has played with this board can give more specific info.
 
Yeah I thought my math was screwed up. OCing my AMD setup was much simpler than this.

I really need an explaination of what #'s do what.
 
No, actually you're right. 1330MHz/4 = 332.5MHz FSB. 332.5MHz*9 = 2.9GHz. I suggest taking a look at the reccomended memory voltage for your RAM and setting that in the BIOS.
 
I set the MB to "synch mode" and it's working now, at 1:1. However, it's only running at 400mhz (DDR2 800) and my CPU is at 3.6GHz using 9x multi. I'm not sure how to get the memory speed up higher.
 
In synch mode the FSB and RAM speed are linked, so you can't raise them independently of each other. Anyways, I suggest you leave things as they are, since 3.6GHz is generally the max overclock people get with E6600s on air.
 
In that case, jack up the FSB :). That RAM should be good for around 450MHz at least, so you should be able to keep going until you've hit the limit of your CPU.
 
Why do you want 1:1 on 8500 dominators?

I'd put it to 4:5, raise the FSB to 400, choose either the x8 or x9 multi depending on what you want the CPU speed to be, and your RAM will be running at 1000Mhz.

That's what I would have done, but my RAM needs 2.3V to reach 1000Mhz, and I'm not going above 2.1V unless I get some active cooling on it.
 
blade52x said:
Why do you want 1:1 on 8500 dominators?

I'd put it to 4:5, raise the FSB to 400, choose either the x8 or x9 multi depending on what you want the CPU speed to be, and your RAM will be running at 1000Mhz.

That's what I would have done, but my RAM needs 2.3V to reach 1000Mhz, and I'm not going above 2.1V unless I get some active cooling on it.
Click to expand...


Oh, Yeah I had it running at 1066 before, using a 4:5 multi. I thought that using the 1:1 was the best way to go.
:confused:
 
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