View Full Version : How to overclock the cpu?
May 18th, 2001, 18:47
How do u overclock the cpu? Is it tough? I have an AMD T-bird at 850 Hz. I want to overclock it but have no idea how to.
By the way, any idea how high it'd go? I have a msi k7t pro mobo.
May 18th, 2001, 20:52
O/C is simple mate. Here's a brief description.
There are many ways of doing it. Through Hardware FSB or software or change multiplier.
I had to change my FSB throgh software on my old system. There was no option to change on the mobo, no jumpers or anything. Plus the multiplyier was locked and BIOS was ****ed.
FSB stands for Front Side Bus. I think yours is at 200 MHz yeah?
This would mean you have a 4.25 multiplyier;
You get the idea, so you find out your FSB and clock multiplier, then increase it. You said that you want to overclcok the CPU so you only need to change the clock multiplier. Overclocking the FSB is better because you change the frequency to all the devices on the mobo. PCI, memory etc... And of course the CPU!
On my old sytem I stuck the FSB to 73.2 MHz from 66 MHz, performce was better than I expected. Far better frame rates, even though it was only a small increasement. I didn't bother with extra cooling though. I have two fans working well anyway.
You should read more on this on many websites that have overclocking articles.
May 19th, 2001, 03:41
Thanx. After that u've explained, I would prefer to overclock my FSB. You mentioned i could overclock using software? Any recommendations?
May 19th, 2001, 10:37
Make sure to run your chip for about a week before trying to overclock as it may be unstable to o/c a new chip. Also it's a good idea to run a program called Prime95. It tests your chip's stability by searching a database for very large prime numbers. You should run it while your not using your PC for about a week before and a week after you o/c. If you try to run Prime95 and your system doesn't boot then you shouldn't overclock.
May 19th, 2001, 10:54
thanx. I read about a program called fuzzy logic II. It's sum overclocker for my msi motherboard. In the review site i visited, they had a image of the program with the FSB able to be manually manipulated by the user. However, when i run the program on my computer, the options such as the manual manipulation of the FSB is disabled. Any idea? Must i do sumthing to the mobo or anything else to be able to change the FSB?
May 19th, 2001, 11:03
I don't recommend you do it through softare, Hardware or BIOS prefered. If you can't, do software. I used a program called SoftFSB, you need to know your PLL or Mainboard manufacture.
Everything you need is @ http://www.tweakfiles.com
I used HOT CPU tester on mine, it tests for errors perfromed by the CPU. I had one error after about 16 hours, so I was pleased.
May 19th, 2001, 19:36
The FSB is 100 MHz by default. You can overclock it to 104 or 107 MHz. But that will not bring much power.
So, if you want 100 to 200 MHz more, you must also increase the multiplier.
Athlon CPUs are protected and their multiplier cannot be changed.
But there is a trick to do it.
You must use a pen (2B is good) and modify the processor.
And then you can modify the multiplicator in the BIOS. I don't recommend more then 104 MHz (FSB) x 10 (multiplicator). Don't forget to get a powerful cooler!
May 20th, 2001, 07:20
That sounds pretty risky, Bobotns. I have mine overclocked by hardware. I have a MSI board that takes a pentium2 slot chip. well that processor kinda died so I needed a cheap processor to replace it. My friend searched online and found me a socket celeron 600 for $60, and a nice alpha heatsink/fan for $40. then I needed a way to stick a socket chip into a slot mobo so he got me a slotket converter from A-bit for $15. The slotket has a frequency jumper on it so I just set it from 66mhz to 100mhz and I suddenly had a 900mhz processor for $115. Of coarse those prices are from 5 months ago so its probably cheaper now.
May 20th, 2001, 15:16
thanx for replying.
I've read about connecting the L1 bridges before. But my bios doesn't seem to have any fuction to change the multiplier settings?
Anyway, I'm having pc 100 ram and issit gonna benefit me if i change the FSB? One more thing, if i change the FSB, won't the PCI Clock change too? Wat frequency would be safe to keep the PCI cLock to besides the default 33 mhZ? (i.e. 34 mhz? ++ )?
May 20th, 2001, 15:45
Remember it's not just the memory that gets effected. Yeah your PCI clock will change on my old PC I got it to 36.6 MHz. You can actually seriously **** up the PCI, if you go to high. Go up in small increasements at a time, until your PC crashes for the first time. I was messing with my PC the other day, I got a bit worried because I wanted to see how far it could go. I was changing some jumpers around, playing with them. Then every time I turned on my PC everytime when it tried to go passed the BIOS it ****ed. I set the settings back to normal, I thought I had completely blown the chip. I turned on my PC again and it kept on making beebing sounds. Seriously I was worried because my PC wouldn't start. I left it for a while, let everything cool down and that. So I waited for 1 hour. **** it still wouldn't start up. I took out the battery on the mobo and cleared the CMOS, hoping this would work. No, I now thought my PC was truely dead. I left it over night having nightmares about it. Started up in the morning. Yes!!! It worked fine. Sweet eh? Information seems to get stored for a while.
Don't be stupid and do what I did, go slowly. OK!
May 20th, 2001, 17:17
As I said, you can overclock the FSB up to 107 MHz without problems. When you change the multiplier better leave it by 104 Mhz. You can change your multiplier on your motherboard. Read your mobo-manual well before doing anything. In most cases, it is a specific jumper that let you change the multiplicator!
May 28th, 2001, 01:01
Now I have a question. I have a AMD K7V 800Mhz, and I believe that the overclocking method would be different for mines. I had its frequency set from 100mhz - 105mhz, which brings my cpu from 800mhz to 840mhz. Is this too much?? Btw the next available frequency would be 107mhz, unfortunatley 107mhz crashed thus I had to go back to 105mhz. Is this the sign of the CPU overclocking limit?? (Also I have 2 working fans, the comp fan and the cpu fan and one empty slot for the 3rd) Since it is a small change will it decrease my cpu lifespan drastically??
Your reply would be appreciated.
May 28th, 2001, 15:12
Originally posted by mecharmor23
Now I have a question. I have a AMD K7V 800Mhz, and I believe that the overclocking method would be different for mines. [snip]
Hi mecharmor23, I wasn't too sure what you meant by 'AMD K7V 800MHz'. Assuming you meant you have a Slot type Athlon @ 800MHz, fitted to a K7V motherboard. If this is the case, then I may be able to help you here. I have a 700 MHz Slot Athlon, with an Asus K7V motherboard. I have bought a device called a GoldFinger and fitted this to the top of my Athlon, this invloved taking the plastic case off of your CPU, cutting the corner off with a junior hacksaw, refitting the case back to the CPU and then pluging in the GoldFinger device. The slot type of Athlon has a small edge connector on the CPU circuit board, with the GoldFinger device you have lots of switches which you can use to set the multiplier frequency of your Athlon. You are able to set the clock frequency from 500Mhz to 1GHz, in 50MHz steps (Assuming you leave the FSB set to 100MHz). You are also able to set the CPU core voltage from 1.6V to 2.2V, in .1V steps. You will need a bigger heatsink if you want to do some heavy overclocking, although I have heard that you should only increase the speed by about 10%-15%. Hope this helps
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