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G4 Digital Audio Overclock problem
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Fresh-Faced Recruit
Join Date: Jan 2005
Status:
Offline
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So I followed this guide to overclock my 733mhz DA to 867mhz. It worked fine at first, so I took it back out to apply arctic silver. Popped it back in, dosen't boot, stuck on the loading screen. I shutdown, repower on, works fine! I look at the system profile, it's rated at 800mhz now! 
The weird thing is that I put that same OCed CPU into another G4, it shows up at 867mhz 
Do I need to reset something? BIOS? (i'm a Mac noob  )
thanks!
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Senior User
Join Date: Feb 2003
Location: Pittsburgh, PA
Status:
Offline
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If your a mac newb why in all earthly creation would u try to overclock and for minimal gain too, ooh 134MHz and a headache, I hate to be a pain but ur lucky enough that the G4 runs and u did gain 77MHz which is a noticible improvment(mmmm sarcasm) OK try resetting the PRAM or CMOS
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15" MacBook Pro 2.0GHz i7 4GB RAM 6490M 120GB OWC 6G SSD 500GB HD
15" MacBook Pro 2.4GHz C2D 2GB RAM 8600M GT 200GB HD
17" C2D iMac 2.0GHz 2GB RAM x1600 500GB HD
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Fresh-Faced Recruit
Join Date: Sep 2004
Location: Atlanta
Status:
Offline
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Originally posted by Joony:
It worked fine at first, so I took it back out to apply arctic silver. Popped it back in, dosen't boot, stuck on the loading screen. I shutdown, repower on, works fine! I look at the system profile, it's rated at 800mhz now!
The weird thing is that I put that same OCed CPU into another G4, it shows up at 867mhz
It's pretty simple--sounds like you need to resolder the one resistor that you moved and make sure it's making a solid connection. If you had removed that one resistor (and not added it to the "0" position), then you would have just an 800 MHz CPU. You would also get the 800 MHz setting if that same resistor wasn't making good solder contact at position "0". The reason for the erratic, random behavior is that the resistor is making contact sometimes but not other times. If it loses contact during a boot, then the machine hangs on a grey screen.
There's nothing wrong with being a newbie--we've all been there at one time. The fact that Joony read first, then modified his hardware, should vindicate him from criticism. Besides, for a "newbie", he's obviously done his homework.
The only way to graduate from newbie to novice is to take that scary first step... Other's may sit by humbly in their urine-soaked pants, typing away happily at their wussified indigo iMac...
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