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Good ol' P4 overclocking

post #1 of 17
Thread Starter 
Hi! As you can probably figure, I'm new to OCing, so my question may seem trvial to you guys.

I've uped my P4 631 FSB from 200 to 245 with a Vcore increase from 1.3000 to 1.3125

However, raising the FSB by only 5Mhz (to 250) won't work even with the Vcore raised to 1.3250

So the question is: should I up the Vcore even more? (It's a 65nm chip)
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post #2 of 17
Pentiums didnt OC very well, and to be honest I havent even heard of your mobo .
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post #3 of 17
Quote:
Originally Posted by Sanders54 View Post
Pentiums didnt OC very well, and to be honest I havent even heard of your mobo .
Well, that's not very nice.

Hello! Welcome to OCN!

65nm chips can take up to 1.55v for 24/7 use. So yes. Crank that baby up!

Realize, however, that as you raise the voltage, and to a lesser degree, the clock speed, your temperatures will rise as well. So be careful, and make sure your cooler is up to par. Try to keep the temperature below 70*c.

Edit: mobo info.

Edit: don't forget about all our guides.
Edited by Wiremaster - 6/9/10 at 8:42am
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post #4 of 17
Thread Starter 
Quote:
Originally Posted by Wiremaster View Post
65nm chips can take up to 1.55v for 24/7 use. So yes. Crank that baby up!
Ok, I'll do that.
Quote:
Originally Posted by Wiremaster View Post
Realize, however, that as you raise the voltage, and to a lesser degree, the clock speed, your temperatures will rise as well. So be careful, and make sure your cooler is up to par. Try to keep the temperature below 70*c.
Right now the CPUcore doesn't get over 50*C when loaded, so there's no worry about that. ...yet.
Quote:
Originally Posted by Wiremaster View Post
Edit: don't forget about all our guides.
Thanks. I've read them. Really useful for a starter like me.


So I'll report back as to how it goes. I have some questions about the RAM, but I guess, I'll tackle one thing at a time
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post #5 of 17
There was a really good guide about RAM on here somewhere...

Edit: right hur.
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post #6 of 17
Thread Starter 
Ok, the road to 250MHz FSB seems a bit rocky...

I tried uping the CPU voltage to 1.4000V - no boot
raising it to 1.4500 resulted in a very pretty orange screen with moving digits and letters.

Tried lowering the Memory multiplier, so it can't be the RAM. Any ideas?


P.S. Noticed a setting named "FSB OverVoltage" (options: "normal", "+0.1V", "+0.2V", "+0.3V") Could that help?
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P4 631 3.00 Gigabyte GA-8I945PLGE (RH) Club3D GF 7800GT 256Mb DDR2 2x1Gb 667 SDRAM 
Hard DriveOptical DriveOSMonitor
WDC WD800JD-00JNC0 HL-DT-ST DVDRAM WinXP SP2 Samsung SyncMaster 206BW 
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Hard DriveOptical DriveOSMonitor
WDC WD800JD-00JNC0 HL-DT-ST DVDRAM WinXP SP2 Samsung SyncMaster 206BW 
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post #7 of 17
You may be having RAM fail if you're getting too far outside of 667. What kind of multiple are you using on your ram, and the resulting speed?

Check the heat coming off that OC'd P4. They are hot as hell.
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post #8 of 17
Try upping your northbridge voltage and see if that helps.

Quote:
Originally Posted by johnyo View Post
Ok, the road to 250MHz FSB seems a bit rocky...

I tried uping the CPU voltage to 1.4000V - no boot
raising it to 1.4500 resulted in a very pretty orange screen with moving digits and letters.

Tried lowering the Memory multiplier, so it can't be the RAM. Any ideas?


P.S. Noticed a setting named "FSB OverVoltage" (options: "normal", "+0.1V", "+0.2V", "+0.3V") Could that help?
Also, that orange screen could be caused by your PSU not putting out enough juice. I've never heard of Ednet. Is that a lower quality PSU?
Edited by RaBidRaBit - 6/9/10 at 1:37pm
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post #9 of 17
Thread Starter 
Quote:
Originally Posted by 2thAche View Post
You may be having RAM fail if you're getting too far outside of 667. What kind of multiple are you using on your ram, and the resulting speed?
By default DRAM:FSB is set to 4:3 (250/3*4*2=667)
Tried setting it to 1:1 (250*2=500) and still no boot
Quote:
Originally Posted by 2thAche View Post
Check the heat coming off that OC'd P4. They are hot as hell.
With FSB 240 it doesn't exceed 50*C. The chipset is hot as hell, but the CPU holds up nicely.
Quote:
Originally Posted by RaBidRaBit View Post
Try upping your northbridge voltage and see if that helps.
I'm not sure my BIOS has such an option. How would it be phrased in the BIOS? (What should I look for?)
Edited by johnyo - 6/9/10 at 1:34pm
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Hard DriveOptical DriveOSMonitor
WDC WD800JD-00JNC0 HL-DT-ST DVDRAM WinXP SP2 Samsung SyncMaster 206BW 
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post #10 of 17
It seems likely that your RAM and/or FSB are unstable. Try isolating the FSB. Drop the RAM multi all the way down, and lower the CPU multi to something lower, then raise the clock and see if it is still unstable. You can use that strategy on all three components, CPU, NB/FSB, and RAM to isolate the problem.
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