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Overclocking

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M29

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How many of you all do it? I'm sure some of you have all tried it before. :D I constantly like to nudge abit more power out of the box. More so, my video card as well. Haven't had anything fry yet which is good. :)
 
Re: Re: Overclocking

Originally posted by chicken minute


I've done it a couple of times. Only fried my motherboard the once:mad:

Although that was more to do with dust clogging up my heat sink!!

Still I was able to convince the shop that the board was faulty and got the parts replaced for free:D
Click to expand...

Haha.

Paranoid about heat, so I've got a well vented box.
 
Re: Re: Re: Re: Overclocking

Originally posted by chicken minute

You can't be too careful, I'd actually done some research, checked an overclockers site for fan reviews, and got a top of the range Alpha, but that meant it just sucked more dust into the heatsink.

After a long overdue upgrade from a Pentium 133 to an Athlon 1.4 I was expecting to be stymied by dust:eek:
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Yeh, got an athlon 1.7 here.
Old one was a k62 550.
 
All AMD's are notorious for frying.
I don't overclock. In my PC I have a Pentium III,1.2Gb.So I don't have a need.I have 512 Mb of ram and a 400Mx video card.So its fast and has great graphics.
My Laptop is a lot slower, but then its a wee bit older.
 

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Originally posted by topdon
I have everything overclocked! Have to get the most out of this Celeron.
Click to expand...

ditto!
 
I recently bought an AthlonXP 1600+, I don't need to overclock it, I could, but what would the point be ?... its fast enough, and running linux is just as good as overclocking, if not better ;)


RoCKinG^RoNNiE
 
Originally posted by RoCKinG^RoNNiE
I recently bought an AthlonXP 1600+, I don't need to overclock it, I could, but what would the point be ?... its fast enough, and running linux is just as good as overclocking, if not better ;)


RoCKinG^RoNNiE
Click to expand...


I have a 1700XP. Still do it. Only when playing games!
 

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Re: Re: Re: Re: Re: Overclocking

Originally posted by M29


Yeh, got an athlon 1.7 here.
Old one was a k62 550.
Click to expand...
What speed do you get your 1>7 to run at?
Just interested as i just bought a new 1 myself
I had my 800 Duron running at 1.1ghz
 
Re: Re: Re: Re: Re: Re: Overclocking

Originally posted by jay_1972

What speed do you get your 1>7 to run at?
Just interested as i just bought a new 1 myself
I had my 800 Duron running at 1.1ghz
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Hey welcome Jay ;).

I can get it up to 1.8ghz.

Unclocked it sits at 1.47ghz. It used to run at 1.1 but I had the FSB setting at 100mhz, when I should have set it at 133mhz!
 
Originally posted by eagleskickass
how do u overclock, i have always been wondering how you do it. Not that i would, i might, but it would be nice to know how too
Click to expand...

I was wondering too, anyone with a tip on how to do it?
 

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You can also overclock by using a grey lead pencil and a scalple it involves cutting tracks and making new ones with the pencil
You need a very steady hand and big balls because 1 wrong cut and there goes your cpu
As soon as you overclock cooling becomes a major problem
If you want to learn more goto a search engine and type in "overclocking"
There are some really good sites and forums out there
Good luck to anyone who attempts it just don't do it with your brand new cpu
 
OK. This is my first post on bigfooty, so it may as well be in my area of expertise... Geekery :D

Your CPU's speed is determined by 2 things:

#1 is the "frontside bus" which is the speed between the CPU itself and the Northbridge. The Northbridge is the bit that talks to RAM, the AGP port and the Southbridge. The Southbridge talks to your PCI slots, your disk controllers, etc etc etc. Anyway, the frontside bus in my Athlon based system is 133MHz.

#2 is the "multiplier". On my Athlon, the default mulitplier is 10. This means the "internal speed" of the CPU is 10 times that of the frontside bus.

In the examples above, you get a resulting CPU speed of 1333 (coz 133 is actually 133.3333333333333...)

Now the Northbridge, as I mentioned, talks to your system RAM at whatever speed the RAM runs at (this is called the memory bus). Some motherboards can make this different to the frontside bus (fsb) or it can run at a different speed. For example, if you have an older Athlon, it (depending on which one) may run a fsb of 100MHz and your RAM is PC133, which runs at 133MHz. The Northbridge can speak to memory @ 133 and the CPU @ 100 and it basically sits there and synchronises the 2 buses.

To overclock, you'll need to change either the frontside bus or the multiplier. I presently run my CPU with a mulitplier of 10.5 which gives me a CPU speed of 1400MHz. Not a big overclock, but I like stability first and foremost. Anyway, Intel CPU's (Pentium II, III, and 4) are "locked" and you can't change the fsb... too bad. AMD CPUs are generally locked (although the "Athlon C Thunderbirds" 1200,1333 and 1400 came unlocked from the factory) but you can unlock them by doing the "pencil trick" (Look here) or with the later Athlon XP's you need to do some pretty elaborate work with Epoxy and demister kits.
Unlocking the CPU is not enough on its own. You need a motherboard that supports changing the multiplier also. Some do it with settings in the BIOS, others use DIP switches others use jumpers. RTFM to see where to do it with your board.

What about those "locked" CPUs then? You can alter the frontside bus. Eg, I could leave my multiplier at 10 and raise the fsb to 140. I would get the same CPU speed as I do now, and the system would actually run faster doing this because the memory would have to work faster, as would the AGP and PCI buses. However, as everyting in the system is now running faster than it was designed to do, there is a greater chance of failure as more components are under stress.

Some CPUs overclock better than others. All overclocked CPUs will run hotter than at default speed, which is why you need better cooling. Sometimes at a higher speed, the CPU will become unstable. To get around this, you can pump up the juice and give the CPU more voltage, which will make it hotter still, requiring even better cooling.

Cooling: now air is a lousy conductor of heat. It really sucks. I have a WBK-68 heatsink on my CPU. It has a 6800 rpm fan that moves about 38 cubic feet per minute of air over an aluminium bunch of fins that are clamped firmly to the CPU. I can safely run my 1333MHz CPU at 1533MHz, by raising the voltage from 1.75 to 1.85V. It gets hot. Damned hot. So I'm presently building a water cooling system for the CPU. It will have a hollow copper block attached in place of the heatsink which has water pumped thru it. This water is cooled by a radiator (a converted car heater core) and pumped around with a little pond pump. I expect cool and safe overclocks to 1600MHz and beyond.

Anyway, this is the end of my little tutorial. See you round!
I'll happily reply to any questions. I've been overclocking since Moses was a lad and pretty much know the ins and outs of it all.
 

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