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Cannot OC CPU

post #1 of 8
Thread Starter 
Hello,

New to the forum, and I came looking to see if I could find some answers to questions that have been buggin me ever since I first TRYED Overclocking my CPU. For now though I merely have one broad question, but I'll throw it out there, hopefully I can work with a few of you to see if there is an answer. I simply cannot at all overclock my CPU, it locks up after I save changes to CMOS and will refuse to boot, and this is after small changes in the CPU Frequency, several Mhz worth, nothing to edgy, I would atleast expect it to boot. I have read several tutorials including one on this forum about overclocking intel CPUs and have followed the directions given yet it still seems to occur.

Here are my specs:

CPU: Intel P4 2.8Ghz 800Mhz FSB
RAM: Kingston ValueRAM 2GB PC3200 (4 x 512MB)
MOBO: Soyo SY-P4I875P Dragon 2 Platinum Edition

P.S. I've been suspecting it could be my RAM, but it's just a wild guess I suppose.
My System
(13 items)
 
  
CPUMotherboardOSMonitor
Intel P4 2.8Ghz 800FSB Soyo SY-P4I875P Dragon 2 Windows XP Pro SP2 Dell 17" 
Power
550W 
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My System
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CPUMotherboardOSMonitor
Intel P4 2.8Ghz 800FSB Soyo SY-P4I875P Dragon 2 Windows XP Pro SP2 Dell 17" 
Power
550W 
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post #2 of 8
Could you tell us WHAT you saved to your cmos? What was stock and what did u change? Did u increase the voltage too?
    
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CPUMotherboardGraphicsRAM
64 FX-55 ASUS A8N Deluxe 256MB 7800 GTX 2GB 
Hard DriveOptical DriveOSMonitor
1 x 150GB and 1 74GB10,000 rpm RAID DVD-Burner XP sp 2 24" Dell 
KeyboardPowerCaseMouse
Logitec Gamer 620WATT Multi-GPU Lien LI Logitec Laser 
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Alienware 
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post #3 of 8
Thread Starter 
Well, I initially tryed to saved 210Mhz as my clock frequency to CMOS, then I even went as far as just saving it as 200Mhz, just to see if i could operate the frequency manually, but it didn't work also, just wouldn't boot. I suppose 200Mhz is stock, unless i'm mistaken, and no I did not touch the voltage.
My System
(13 items)
 
  
CPUMotherboardOSMonitor
Intel P4 2.8Ghz 800FSB Soyo SY-P4I875P Dragon 2 Windows XP Pro SP2 Dell 17" 
Power
550W 
  hide details  
Reply
My System
(13 items)
 
  
CPUMotherboardOSMonitor
Intel P4 2.8Ghz 800FSB Soyo SY-P4I875P Dragon 2 Windows XP Pro SP2 Dell 17" 
Power
550W 
  hide details  
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post #4 of 8
Quote:
Hello,

New to the forum, and I came looking to see if I could find some answers to questions that have been buggin me ever since I first TRYED Overclocking my CPU. For now though I merely have one broad question, but I'll throw it out there, hopefully I can work with a few of you to see if there is an answer. I simply cannot at all overclock my CPU, it locks up after I save changes to CMOS and will refuse to boot, and this is after small changes in the CPU Frequency, several Mhz worth, nothing to edgy, I would atleast expect it to boot. I have read several tutorials including one on this forum about overclocking intel CPUs and have followed the directions given yet it still seems to occur.

Here are my specs:

CPU: Intel P4 2.8Ghz 800Mhz FSB
RAM: Kingston ValueRAM 2GB PC3200 (4 x 512MB)
MOBO: Soyo SY-P4I875P Dragon 2 Platinum Edition

P.S. I've been suspecting it could be my RAM, but it's just a wild guess I suppose.
A few things first, make sure your AGP and PCI clocks are locked at 66.6MHz and 33.3MHz or as close as possible. This will make sure that the system does not crash because of these frequencies going out of range.

Secondly looking at your system configuration I also believe that your memory is the big issue here. When your FSB operates at 800MHz your memory will operate at 400MHz as it will be in a 1:1 ratio (unless you have changed it). This means that increasing the FSB speed will increase the memory speed above what its meant to operate at. As your memory is value RAM it will not run much faster than 400MHz unless you give it more voltage, I would only increase the voltage if you know what your are doing as it will heat up the memory modules pritty fast, and this can lead to thermal issues inside the case as well as permanent damage to the RAM.
A way to cheat here would be to set something called a divider, this will allow you to change the FSB:RAM ratio to a setting that allows you to make the memory run slower while keeping the FSB at its normal settings (and vice versa). For example you could have the memory operating at 333MHz and the FSB at 800MHz, this means you could increase the FSB much more as the memory speed starts out lower. However when you change the divider the speeds of the devices do not increase in sync, so the memory may increase more than the FSB when you increase the speeds, so watch out.

This option is in the BIOS and I think its a much better was to do it as you could get a FSB speed of 900MHz with the RAM still running at only 400MHz.
post #5 of 8
Thread Starter 
Thank you for your response. I have set the "Async AGP/PCI CLK" option to 66/33Mhz, and the "DRAM/CPU ratio" to 0.8 (I only have the options of 0.8, 1.25, 1.33). I am setting my "Frequency 1Mhz Stepping" to 210Mhz, this thus changes my DRAM:CPU ratio to 336Mhz. I saved to CMOS and it still locks up on restart. Have I entered any setting wrong? does the RAM have to operate at 400Mhz?
My System
(13 items)
 
  
CPUMotherboardOSMonitor
Intel P4 2.8Ghz 800FSB Soyo SY-P4I875P Dragon 2 Windows XP Pro SP2 Dell 17" 
Power
550W 
  hide details  
Reply
My System
(13 items)
 
  
CPUMotherboardOSMonitor
Intel P4 2.8Ghz 800FSB Soyo SY-P4I875P Dragon 2 Windows XP Pro SP2 Dell 17" 
Power
550W 
  hide details  
Reply
post #6 of 8
Quote:
Thank you for your response. I have set the "Async AGP/PCI CLK" option to 66/33Mhz, and the "DRAM/CPU ratio" to 0.8 (I only have the options of 0.8, 1.25, 1.33). I am setting my "Frequency 1Mhz Stepping" to 210Mhz, this thus changes my DRAM:CPU ratio to 336Mhz. I saved to CMOS and it still locks up on restart. Have I entered any setting wrong? does the RAM have to operate at 400Mhz?
The RAM does not have to operate at 400MHz, it can run at a frequency at or below 400MHz with no problems at all. This could mean that there is something else that we are missing.

Trying increasing the CPU voltage (vcore) a notch or two as this could be an issue.

Note:
For Northwood cores keep your CPU's temperature below 55C to be on the safe side, 65C for Prescott cores. This is directly releated to the change in the CPU's voltage and frequency.

Report back after you have tried that
post #7 of 8
Thread Starter 
OK. For the "CPU Vcore select" I have entered 1.600

I kept the same settings as before:

"Async AGP/PCI CLK" = 66/33Mhz
"DRAM/CPU ratio" = 0.8
"Frequency 1Mhz Stepping" = 210Mhz (changes DRAM Frequency to 336Mhz)

Still locks up on restart, it appears as if it just won't let me manual change anthing involving frequencies. I'm using Phoenix - AwardBIOS CMOS Setup Utility if it matters.
My System
(13 items)
 
  
CPUMotherboardOSMonitor
Intel P4 2.8Ghz 800FSB Soyo SY-P4I875P Dragon 2 Windows XP Pro SP2 Dell 17" 
Power
550W 
  hide details  
Reply
My System
(13 items)
 
  
CPUMotherboardOSMonitor
Intel P4 2.8Ghz 800FSB Soyo SY-P4I875P Dragon 2 Windows XP Pro SP2 Dell 17" 
Power
550W 
  hide details  
Reply
post #8 of 8
Thread Starter 
I believe I have discovered the source of my problem. I have flashed my BIOS to the latest version, and I was able to get to 205Mhz (test run), I will now do some trial and error runs to see how far I can push her. Thank you for the information nontheless, now I have the tools necessary to OC, I will report back once I have gone as far as I can, and relay anymore questions I may have in the process.

One thing could be learned from this, UPDATE YOUR BIOS!,
My System
(13 items)
 
  
CPUMotherboardOSMonitor
Intel P4 2.8Ghz 800FSB Soyo SY-P4I875P Dragon 2 Windows XP Pro SP2 Dell 17" 
Power
550W 
  hide details  
Reply
My System
(13 items)
 
  
CPUMotherboardOSMonitor
Intel P4 2.8Ghz 800FSB Soyo SY-P4I875P Dragon 2 Windows XP Pro SP2 Dell 17" 
Power
550W 
  hide details  
Reply
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