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Please advise 1st OC 3.0 Northwood system

post #1 of 26
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Hi, this is my first post. I have had my 3Ghz system for a couple of years and am just now getting to the point where games could use a boost (thanks Bethesda). So I just got a GF 7800GS and now I want to OC my puter. The P4P800 board is great, and I can get to 3.3Ghz just by OC10% in the bios, but 20% fails. I have played around for 3-4 hours and managed to manually get to 3.6Ghz (240 FSB, I think), but I had to drop mem to 320 which shows it running at about 190Mhz. I've come across a LOT of great info here today, and I've read the FAQs.

The opinions I seek are in answer to this question: I don't (at this point) want to deal with changing the stock fan--maybe later--and I don't know what is realistic to expect from stock. I am probably suffering on the memory side if I leave it as-is, or I could clock down and leave the mem at 1:1. I may be misunderstanding how this works, but I think ideally I would like to get to 250FSB, which would put me at 3.75Ghz, with my memory (still divided 320) at the stock 200mhz. My temps don't seem to be a problem (at least idling) but I can't even boot past 3.62. I currently have voltage at 1.6

What do you guys think? Leave it where it is? Clock down and have memory at 1:1? Or can I do better?

Thanks for any opinions and if my profile doesn't have info you need I will provide. Great forum.
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Northwood 3.0/800 Asus P4P800 XPSP2 Thermaltake 420W 18A 
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post #2 of 26
.:Welcome to the forums:.
you have a voltage of 1.6?! your temps are fine right?
well anyways, you should be able to be hitting that relatively easily since of your flexible motherboard..hmmm...and your running a divider, always oc from the bios..
your oc you have right now isnt that bad as the matter of fact

but to tell you the truth im leaning towards the power supply in this case..thats some serious power in your system (especially oc'd) for that 420w
    
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post #3 of 26
Well the Northwood cores seem to max out at 3.6 to 3.8 ghz. no matter what the voltage. 1.6v is fine for a Northwood as long as your temps are OK. I think Id try to find stability at 3.6 and mover up from there. Make sure you monitor your temps and use a program like Prime 95 or OCCT to test for stability.
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post #4 of 26
in that case..just increase stability of what you can get max...but i really think that you psu might be A problem either soon or in the future...fyi
    
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post #5 of 26
What is your vcore voltage setting? Is this the maximum you have raised it? You are using stock cooling and the stock heatsink/fan assembly on the Northwood was not a very good one.

I would move to a better cooling device using Arctic Silver 5+ Thermal Adhesive if that was my system. You say that you do not wish to remove the stock one so I would say that you might well be at your maximum overclock. 18A on the 12V rail is minimal with an overclock.
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post #6 of 26
Thread Starter 
Thx, Suthrn & YB.

The power situation may be an issue, hadn't considered all of the gear in there. I may pull one of the 10K RPM SCSI drives (don't need both). I started with 1.6v because Asus Probe told me that was where the board put me on 10% OC. Maybe I'll look at moving down from there (up from there hasn't worked so far). I am getting around 49c idle--don't know what it is under load yet. I'm really unsure of the effect of running memory at 320 instead of 400.

I'm going to play with it more when I get home tonight...we'll see. I suspect this is going to be an obsession that lasts for several days at least.
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Northwood 3.0/800 Asus P4P800 XPSP2 Thermaltake 420W 18A 
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post #7 of 26
oh tonic..youve got to put the oc down if your idle temps are that high..thats about the place where ppl start to worry..id say put it down untill you get mayb 40 - 45c idle and then get a better cooling solution, then taking it higher..we wouldnt want your processor damaged
    
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post #8 of 26
49C for a Prescott at Idle is normal but for a Northwood it is not a healthy proposition. With a decent cooler you can expect idle temperatures to maintain ~32C and load ~42C - 45C.

Why are you so against spending a few dollars on a better cooling device? It makes no sense to me that you are willing to spend that kind of money for the video card but leave your processor overclocked with a stock cooler.

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post #9 of 26
Northwood 3.0 (800FSB) on P4P800SE. Currently running at 3.72 GHz. Testing it with Prime95 as we speak. Temps around 40C idle and 47-48C load. Zalman 7000ALCU CPU cooler.

I think it is worth looking into an aftermarked cooler. Should not cost too much (< $50), and definately worth it.

I probably go down a bit, since I want my system to be quiet. I can run at 3.45 GHz almost silent, with temps below 50 load. (low rpm case fans, and Speedfan knocks down the CPU cooler)

Good luck
    
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post #10 of 26
im telling you tonic you need an aftermarket cooler..the big typhoon would do you wonders with that processor..stay away from the g-power pro like i have though it is the loudest thing in the world
    
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