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New to O/C :Pentium D 805

post #1 of 34
Thread Starter 
Hi everybody, i'm running a pentium d 805 cpu with a P4M89Ot-M2 motherboard (elitegroup), i baught the processor because i heard it was extremely easy to overclock to about 3.0 ghz, and it was within my budget. I was under the impression that i had to up the "cpu frequency" in the bios, but since that was grayed out i decided to look for something similar *of course in the blue screen of death to computers* there was an option in my bios "CPU Over-clocking Func." which was previous disabled. so of course, i enabled it. bringing up another little section right under it, this section had a number "200", i changed that to 150 *thinking 133 frequency plus 17 x 20mult would make it an even 3.0ghz" after i changed it my windows loaded once, then i got a blue screen. so i went back to bios menu and disabled all of it and did the "load optimal defaults" thing and reset. My computer will no longer start up, it doesnt get to the loading windows screen it just kinda stays black. The floppy drive light is on, maybe it's trying to boot from floppy drive? I went to bios and changed it to boot from hard drive first but it didnt solve anything. I'm wondering what i have to do to fix this
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Intel Pentium D 805 EliteGroup P4M89Ot-M2 motherboard NX 7600 GS 1gb DDr2 533 
Hard Drive
320 gb 
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My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Intel Pentium D 805 EliteGroup P4M89Ot-M2 motherboard NX 7600 GS 1gb DDr2 533 
Hard Drive
320 gb 
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post #2 of 34
Quote:
Originally Posted by Kitkat1 View Post
Hi everybody, i'm running a pentium d 805 cpu with a P4M89Ot-M2 motherboard (elitegroup), i baught the processor because i heard it was extremely easy to overclock to about 3.0 ghz, and it was within my budget. I was under the impression that i had to up the "cpu frequency" in the bios, but since that was grayed out i decided to look for something similar *of course in the blue screen of death to computers* there was an option in my bios "CPU Over-clocking Func." which was previous disabled. so of course, i enabled it. bringing up another little section right under it, this section had a number "200", i changed that to 150 *thinking 133 frequency plus 17 x 20mult would make it an even 3.0ghz" after i changed it my windows loaded once, then i got a blue screen. so i went back to bios menu and disabled all of it and did the "load optimal defaults" thing and reset. My computer will no longer start up, it doesnt get to the loading windows screen it just kinda stays black. I'm wondering what i have to do to fix this?
reset your cmon, you must also up your voltage when you do this.
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post #3 of 34
You should be able to get a good stable overclock to 3Ghz without raising your voltage but as was suggested, you'll need to clear your CMOS and start over in order for it to boot. On the Pentium D 805 you'll need a clock of about 160-162 in order to hit the 3Ghz mark.
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post #4 of 34
Thread Starter 
all right, how do i clear my cmod? *guess i'll look this up on google as well*
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Intel Pentium D 805 EliteGroup P4M89Ot-M2 motherboard NX 7600 GS 1gb DDr2 533 
Hard Drive
320 gb 
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My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Intel Pentium D 805 EliteGroup P4M89Ot-M2 motherboard NX 7600 GS 1gb DDr2 533 
Hard Drive
320 gb 
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post #5 of 34
ECS/Elitegroup mobos are crap for OCing -_-

The Pentium D 805 has a 133MHz FSB. The multipliers are locked (downward also, i believe), so you have to toggle the FSB to overclock (FSB x CPU multi = CPU speed). The CPU multi on the 805 is 20. So what you want is a FSB of 150 to get to 3.0GHz. Keep in mind that this is gonna overclock everything, including your RAM (you might have to use dividers) and PCI and PCI-e (you might have to lock these, hope you have those options).

Again, ECS mobos aren't that great for OCing, but hopefully you can pull off a ~400MHz OC.

Edit: To clear your CMOS, you either find a jumper next to the battery (should be labled CMOS) and put it on the middle pin and the pin it's not connected to for a second and then switch it back, or take out the battery for ~15 min or something and then put it back in.
post #6 of 34
I'd actually get a better motherboard thats C2D compatible also. The Bioforce Tforce965PT is a cheap one and it should support your CPU. Not sure if that ECS board you're using is DDR2 though so you might have to get newer ram.
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post #7 of 34
you gotta look at your manual, there is some pins somewhere in the mobo that resets it or by removing the battery for hours.
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My love machine
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CPUMotherboardGraphicsRAM
i7 2.9 MacBook Intel HD Graphics 4000 1536 MB 8GB DDR3 
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512 SSD OSX El Capitan 13.3" 60W 
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MacBook 
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post #8 of 34
Quote:
Originally Posted by Kitkat1 View Post
all right, how do i clear my cmod? *guess i'll look this up on google as well*
You can take the battery out for 30 sec
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post #9 of 34
BTW he meant CMOS.

I had a ECS mobo for an A64 and it was crap for overclocking. Even with an ECS mobo the 805 should overclock amazing, at least the 400MHz mentioned earlier. I was able to have mine stable at around 3.2 GHz with no extra voltage with good ram and a good mobo.
post #10 of 34
Thread Starter 
ah yes, i found my mobo manual and it shows where the clear cmod pins are. It also said that "if overclock fails you must turn computer power off, and hold page up button then turn on computer" apparently that was supposed to be equivalent to "clear cmod" but i got a dumb message and it really didnt do much. anyways, i'm going to try the pin method tmrw. thanks a lot for your quick and knowledgable help
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Intel Pentium D 805 EliteGroup P4M89Ot-M2 motherboard NX 7600 GS 1gb DDr2 533 
Hard Drive
320 gb 
  hide details  
Reply
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Intel Pentium D 805 EliteGroup P4M89Ot-M2 motherboard NX 7600 GS 1gb DDr2 533 
Hard Drive
320 gb 
  hide details  
Reply
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