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CPU and Ram Clock Problems

Bromi06

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#1
ok my problem is my cpu is a quad core q6600 and should be running at 1066mhz my ram is also 1066mhz it is corasair dominator ddr2 if i run both at 1066 it wont Boot up if i run one at 1066 and one at 800 this can be either way roundits fine please help my voltage is 2.2 on the ram and 1.35 on the cpu my motherboard is an abit nforce680i awd9 wifi
please help

Many Thanks
Bromi
 

Tatty_One

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#2
ok my problem is my cpu is a quad core q6600 and should be running at 1066mhz my ram is also 1066mhz it is corasair dominator ddr2 if i run both at 1066 it wont Boot up if i run one at 1066 and one at 800 this can be either way roundits fine please help my voltage is 2.2 on the ram and 1.35 on the cpu my motherboard is an abit nforce680i awd9 wifi
please help

Many Thanks
Bromi
Hi, It would help if you could complete your specs under "user CP" so as I could get a feel for your whole system. I assume you have 2 x 1GB Ram installed? So you can run each stick at independant speeds? or are you saying that if you reduce your CPU FSB to 800 then you can get it to boot?

If all the answers to that are yes, my first suggestion would be, if your memory timings are on "auto" actually change them to 5-5-5-15 @2T to start with, sometimes boards and their BIOS's can default at wrong timings and voltages set on auto, I assume from what you have said that the CPU voltage is not set to "Auto" but 1.35V, as a second attempt if the first does not work, try raising the CPU voltage for now to 1.4V to see if that helps.

The key thing here is that if you reduce FSB as you have indicated that you have and that allows you to boot, then on a memory 1:1 divider you are reducing your memory speed assuming that your memory is "linked" that would indicate either not enuff voltage to CPU or insufficent voltage to memory or as I have said, your memory timings are defaulting at too tight timings to boot.

Let me know how you get on and get back to me.
 

Bromi06

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#3
user cp
2 x 1 gig stick ddr2 corsair dominator ram
Nvidia 8800 gts 320mb bfg OC
1000w north q psu
intel quad Q6600 with non stock heatsink


ok everytime it crashes my cmos has to reset so as standard my ram is running at 533 now and procesor at 1066 266 x 9 = 2.4ghz not overclocked at all temp remains around 30-35 degrees for cpu, i have the latest bios and my ddr2 voltage defaults back to 1.8

cpu core v is 1.35
north bridge v is 1.5
south bride v is 1.2
Hyoer threading v is 1.2
cpu vtt is 1.2

Thanks

Bromi
 
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#4
give more Vdimm.
your 1066mhz ram will never work there with 1.8Vdimm.
they write on them how the default V is.
 
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#6
try 2.3-2.35V.
 
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#7
do waht i did after many months of stuffing around, go 1T if u can and run around the 800fsb mark....( i get better performance at 1T 4-4-4-8 448 mhz 1.9 v then i did 2T 4-4-4-8 1100 mhz 2.3v)
 
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#8

cdawall

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#9
try pushing the lats to 5-5-5-15 2T 2.3v if that wont work woth the ram at 1066 set the timings to 6-6-6-24 2T 2.2v. The other post were 1T was recommended makes no performance difference and just make most systems unstable.
 

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#11
I'm with Rampage on this one. I know people say C2D's like higher frequencies and looser timings, but in my experience, the reverse is true. In everest and superpi, I benchmark best at 4-4-4-6 1T 940mhz, even against 5-5-5-15 1T 1150!
 

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#12
Still not got both to run at 1066 without it freezing any more suggestions

thanks
So have you tried all 3 of my origional suggestions?
 

Tatty_One

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#13
I'm with Rampage on this one. I know people say C2D's like higher frequencies and looser timings, but in my experience, the reverse is true. In everest and superpi, I benchmark best at 4-4-4-6 1T 940mhz, even against 5-5-5-15 1T 1150!
I think that also depends on the chipset etc, I find the opposite.
 

Tatty_One

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#14

GIGGLA

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#15
I suggest to download "memtest" and burn a bootable cd with memtest on there. Run it for a few passes. If it fails that at the recommended timings and voltage, then your ram "may" have a serious problem and will need an RMA (a return because you got a bad stick). If you get errors you can try one stick at a time to see which one is bad. Although if you bought the ram as a set of 2 or 4 sticks I recommend sending all back so you get a real matched pair(s) setup again. Good luck and I hope you get them working!
 

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#16
maybe board issues or the ram is not up to the task...
 

Bromi06

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#17
After a lot of playing around i have clocked my cpu up to 1333 and my ram underclocked slightly to 1000 which im happy with thanks for all your suggestions the problem was some of the other bios settings i had enabled which dont go well with overclocking and my dimm vt was off a little but all sorted now :)
 

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#18
Well done....all's well that ends well! :toast: