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550BE Breaking 4Ghz?

post #1 of 18
Thread Starter 
So I'm trying to break 4 on my CPU. You can see the stuff I'm trying with in my machine.
At first I went way over on the voltage. I just went as high as my board allows. It got me to 3.9, and I thought I was stable as I ran P95 for hours with no problems. I usually note that P95 will show instability in my system within about 15 minutes.
Anyway, for some reason I was going to try for 4 and 3.9 BSOD for the first time, then it would do the same with 3.8.
I have absolutely no idea why. Ambient temps were the same, although the temps never got high enough to make a difference in Coretemp or Speedfan.
So I figured I'd try again, and was wondering if anybody was familiar with my mobo or bios enough to give some tips.
I'm currently stable @3.8 with P95 loads around 32C and idles around 24C.
Running 1.425Vcore, and I'm not sure if I can OC my FSB with this board or not...
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post #2 of 18
Whats the stock Vcore on it? It sounds to me like you might need a little more juice, but first check your RAM and make sure when you're pushin the CPU towards 3.9ghz, that the RAM isn't at some ridiculous speed. It's always recommended to lower the multiplier on the RAM to the lowest one when you're OC'ing, especially to these speeds. If the RAM is already set to the lowest multiplier, then you can try gently upping the voltage on the RAM, which I do not recommend unless your RAM has a heatsink. If this is stuff you already know then thats great I'm just givin my 2 cents!
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post #3 of 18
With you cooler you should be able to do it with alot of trial an error.
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post #4 of 18
Thread Starter 
Stock Vcore I think is 1.35
Ram is running @ 400, timings I'm not too sure of, I dunno if my mobo really allows me to set timings. Ram has heatsinks of a sort and an active cooler strapped on it.



I have the NON LED version.

I "think" I may have upped the ram voltage by 33mv, I'ma have to check.
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post #5 of 18
I'm guessing this is DDR2 800mhz RAM right? You should be fine at 400mhz tbh, I don't think its the RAM causing the BSOD. So back to the CPU then. I feel like you COULD go higher on the Vcore, however since I am not familiar with the Asus board you have, it might be too risky or else you could possibly blow a capacitor/transistor.
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post #6 of 18
I got my 550 at 4GHz right now so far Prime stable:

This is under water BUT I found out I was overclocking my CPU wrong since I've had it . I found that just upping the Vcore and multiplier isn't the way to go lol. So if you up the FSB and keep track of your NB speed and up your voltage accordingly you should be able to do it on your ASUS board. Your H50 should be able to do it, as long as your VRM and NB have adequate cooling you should be A-ok.
Edited by Kratthew D. Kraids - 1/1/11 at 2:01pm
    
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post #7 of 18
Thread Starter 
Eh, I can keep it 3.8 and I guess that's good enough for me.
I'm getting a 965 in a couple months anyway, I was just trying to wring this CPU for all it's worth till then.
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post #8 of 18
Quote:
Originally Posted by Nixuz View Post
Eh, I can keep it 3.8 and I guess that's good enough for me.
I'm getting a 965 in a couple months anyway, I was just trying to wring this CPU for all it's worth till then.
What revision is your CPU?
    
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post #9 of 18
Thread Starter 
C2
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post #10 of 18
It is hard to get 4.0ghz out of any C2 cpu. They normally run between 3.7-3.9ghz.
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