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Athlon XP Overclocking question...

K

kingbob

Member
Hello all...I have a question for all of you overclockers. My system setup is an Athlon XP 1800 in an Abit NV7-133R, which I know isn't great for oc'ing. I decided to try to OC it. In the CPU set up menu I set the FSB up to 147MHz, that was all I could get before Windows wouldn't boot. Then, I tried setting my CPU voltage to "raising" (which is the only CPU voltage adjustment in my BIOS) to take up the voltage 0.05V, I could then get my FSB to 149MHz, effectively making it 1713.5 MHz. Anything after that and Windows would bitch at me before loading. I originally had a stick of Crucial PC2100 RAM, but it died a while back on a different computer, so I went out and picked up a stick of PNY, which had Infinion chips on it. I'm waiting for my Crucial memory to come back. Would using the Crucial memory allow me to go to higher FSB speeds? Or should I just go all the way an unlock it?
 
there are several things that can limit the amount of overclock
memory
cpu
pci/agp devices

as soon as one of those hits it limit then your pc wont work right...
the fact that you were able to raise the vcore and were able to increase your fsb more makes it look like the cpu was the limiting factor

so faster/better ram wont help 🙂 since it wasnt the limiting factor

 
I don't have any PCI cards in right now, and I know it's not my Radeon 8500 because my friends can hit 159MHz without flinching. You're probably right about the voltage. Is there any other way to get over this hurdle? Or is unlocking it the only way to go for faster speeds?
 
pci bus controlls much more then just pci cards 🙂

usb is a pci device and its usually the first to stop working with a high pci bus

your harddrive (ide controller) is also on the pci bus, some harddrives can cause errors and corrupt data if the pci bus is to far out of spec (not to mention just killing the harddrive on occasion)
 
i guess i could try to finish answering your question 🙂

1713mhz could be the limit of your cpu.. if so then unlocking it wont help you overclock higher, all it will do is let you drop the fsb so the rest of your system is closer to spec

but to overclock the chip higher you need to cool it better and pump more voltage to it

if you have a good heatsink/fan then you should be safe in increasing the vcore up to 1.85 (1.85 is probably the limit of your motherboard)
 
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