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I want 3.0Ghz on my 4800 X2 Brisbane!!!

post #1 of 12
Thread Starter 
Ok im more of a GPU overclocker, but I really want to squeeze every drop of performance out my CPU. I have this AI option in my bios which auto overclocks my CPU 10%, but I want to do it manually. So can anyone supply me the right voltages, Multiplier & FSB settings to make 3.0Ghz? Will be getting an aftermarket cooler soon. REP+
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post #2 of 12
OC'ing isn't that simple. All hardware combinations (not to mention HW generations) will have differing results and limits. It'll never be as cut and dry as "set this to this, this to tha and voila".

I highly suggest you wait to overclock until you purchase a decent after market cooler.

I also suggest consulting the stickied AMD overclocking guide. I'll edit with a link to it in a second.
    
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post #3 of 12
Thread Starter 
And the link Heru?
The Peach
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The Peach
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post #4 of 12
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post #5 of 12
You can safely overclock with the stock heatsink, just watch your temps. Do you have some sort of desktop temp monitor? If so try to keep cpu load temps under 55 celsius. Voltages up to about 1.45v with the Brisbane are safe as lond as your temps don't get too high. You might not be able to reach all the way to 3ghz. on the stock cooler though.
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post #6 of 12
I'll be getting the same CPU. I have some more experience than you I think (no offense), but what I'd do is:

-Bump the vcore 0.1 - 0.15v
-Set FSB to 240
-Drop Ram multi to 2.5-3, maybe bump the vram up 0.1v

It'd be better if you had 800MHz ram

If you want to do this methodically though, you have to figure out individually how far your components can be pushed (FSB, RAM, and CPU, usually in that order)

-Drop your cpu multi down, way down, drop your ram multi way down, and see how far you can push the FSB stable (stable meaning prime 95 stable for, say, 10 minutes)

-Use that FSB, keep your cpu multi the same, and start pushing your ram multi up. see how far you can get it.

-Then drop your ram multi back down, put your CPU multi back up, drop the FSB back to default and start raising it to OC the proc.

CAUTION:
-Don't bump the chipset voltage more than .2v
-Don't bump the vram more than .2-.3v
-don't put the vcore past 1.5

have fun
post #7 of 12
Thread Starter 
Ok I did all the necessary adjustments. I got my CPU to 3Ghz! but it gets too hot, 60C, and then blue screens. I could notice FPS improvement in 3Dmark though. So what aftermarket cooler would you guys recommend?, those zalmans look pretty good.
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post #8 of 12
Zalmans suck

Thermaltake Big Typhoon is good, although the bluescreen could be though not enough vCore or just because your CPU won't take 3 GHz
post #9 of 12
my zalman 9500 is doing a good job, even had my 6400 up to 3.6 ghz (though my tt120 has dropped 7 - 10 cel from the zalman)

Zalman 9500 + C2D 6400 + 3600 mhz
http://www.setel.com/~elminster/c2d/stable.jpg
post #10 of 12
Thread Starter 
my vcore is a 1.45 which im told you shouldnt go past. But I ran 3Dmark for about 2 tests until it crashed, infact 3Dmark got an error, then BSOD'd. CPU HSF was hot to the touch, im sure its just heat. I read 60C in bios after I reboot so im guessing it got hotter than 60C
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