Hey, anyone here overclocked/overclocking your system before, I find overclocking is cool and really speedup all process......hey significant improvement in encoding speed.

Edit: Overclocking will damage CPU even how good the cooling system is, is it true?

I've never overclocked my system but I think if you slightly overclock by just a little bit you'll only increase the heat build up a little.

Is it true, I don't know, however I think if you go overboard and do some insane overclocking heat will most likely be a serious problem.

Edit: My sentence structure made no sense.

I have to say something about it!
Once I had Slot1 Celeron-333 MHz on i440BX chipset. He works at 66MHz bus, for your know. And I and my family like to view the films on the PC. DivX3, 4, WMV, VideoCD formats seems very good on this PC, yes. But without any quality postprocessing, thats sad. When I set postprocess to 1 or 2 points (at DivX codec properties) video stream starts to lag from sound stream. I know that not just only due to CPU core braked, but RAM bus too - 66 MHz has very slow perfomance! Motherboard had feature to set system bus to 100MHz remaining PCI bus on 33MHz and AGP bus on 66MHz - so, if CPU core could run on 100MHz outer bus, peripheral cards couldn't influenced with overclocking - it is important! But Slot1 CPU couldn't.
Then I set system bus to 75MHz, later, plucking up heart, to 83MHz, and testing, testing ... PC works stable! Despite of high frequency overload of peripheral cards and IDE controller - and drives!
Then, I could set the postprocesing in DivX up to last position without any lags. But, it was a little bad thing - about 1 hour of viewing film in that mode PC hangs. Yes, due to a little overheating of CPU.
Well, it's need to remove regular CPU cooler (do you see this mocking Slot1 Celeron cooler?!) and to mount more plump cooler with good thermopaste (there was a russian development called AlSil). All changes be made with few of cotton threads and some matches - honestly! - and need about 30 minutes.
Yes! All works!


Semiconductor life influenced by, in first, high voltage on p-n-transition, and in second, high temperature. That says cource of physics. So, if you use overvoltaging - this technic supported by many motheboards as overclocking feature - such overcloking will shorten CPU life even how good the cooling system is, it is only case that true.
If you have cooling system that provides for CPU safe temperature mode (that one can be called good cooling system) - any kind of overclocking safe for his life. (Exception with overvoltage, as I say earlier)

Currently running my Thunderbird Athlon 1.4Ghz at 1.54Ghz

And I've got a Thoroughbred (.13 micron) 1800+ on the way to play with!

Overclocking is fun!

So far I've managed to run my 1800+ stable at 140Mhz FSB. Windows recognizes it as a 1900+ and the temp is up by only 4 degrees. But it doesn't want to go above 145Mhz I need to work more on my tuning I suppose....

I have a XP1900 and have had in up to XP2100. I only did that for about 10 minutes as I didnt want to mess the cpu up! Also overclocked my GF4-4200 to GF4-4400!

Original 3D mark 2001 score - 9005
Overclocked 3D mark 2001 Score - 10000+

As I said, only left it running at that speed for 10 minutes, didnt want to burn anything out.

If you are interesed in cooling check out Prometeia

I wish I had new capacitors for my BP6 so I could OC this ol fool to 100MHz FSB :/

At an audio forum, one would think that underclocking would be a popular topic for discussion. Less heat, less cooling, less noise! I have a dual XP1600+ machine, and even though I dropped a ton of money on it, I'm about to drop another truckload to buy a pair of $40 heatsinks, not to mention the expensive fans and thermal compound, all the wiring and switches I might eventually purchase (to toggle fan speeds), the temperature monitors, and perhaps conductive ink. And then I'll have to move on to the video card and hard drives...

There have been multiple reports on this board of "stable" overclocked systems, never crashing on Q3demo loops, never registering an error in Prime95, that will screw up MP3 encodes using Lame, or have trouble encoding FLAC/MAC files flawlessly (that was reported by Annuka once, I believe). So ask yourself: is overclocking really worth it?

Tried unlocking it?

Actually I did, yesterday! The thread gave me incentive to look into overclocking again, so I visited a few overclocking sites, did some Google Groups research and then tried to unlock the Athlon. I managed to cover up the laser cuts with super glue and smoothen the gaps between the L1 bridges, but then I apparently failed to connect all the bridges with conductive material because when I set a different multiplier the board refuses to post. I have to work on an assignment for my uni these days, so I didn't take the PC apart to try again, but will do so ASAP. It's not as bad as I thought and I have connected *some* of the 5 bridges, so I will not give up Even getting a 1800+ at 166 FSB (with lower multiplier) to go with my 333DDR RAM would be worth it, any additional overclocking is welcome of course

You took the words straight out of my mouth!

Boy, am I disappointed. You both beat me to it.

- M.

How about getting rid of all fans? Is there any cpu capable of not using a fan at all? Maybe an underclocked celeron with a huge heat disipator? I wonder if we could see any Transmeta, or VIA/Cyrix cpu without fans. I think there is a MicroATX (or smaller) case form with fanless heat transfer. Hmm but then we also have those noisy HDs... not good, seems like a hard thing to do, make a noiseless PC for listening audio. Maybe its better to choose a PDA or Laptop (the ones without fans). I had hope for the transmeta procesors, ah well. (Toshiba Libretto with Transmeta or any other fanless processor... now thats cool, small, powerful )

Now even video cards come with noisy fans, eek.

I overclock a 533MHz FC-PGA Celeron II to 800MHz using the good old 66MHz -> 100MHz bus change. I can't believe I still use this computer since the motherboard has the venerable 440BX chipset and was originally designed for a lowly Celeron 300A. It is still usable, of course, just able to playback a DivX-encoded movie at 100% quality without dropping frames (requiring like 90% CPU utilization).

If I upgraded today I would likely go with a Pentium 4 2.53GHz and 266MHz DDR RAM. What gives me pause is the enormous migration effort I'd have to endure to move 3 years of applications and data off this machine to a new one. I probably would not overclock a Pentium 4. I overclock my Celeron II because it handles it fine and the 50% bus overclock spells a major performance boost.

"No fans" is much more difficult to achieve than "few fans" (meaning, a couple of low-RPM, very quiet fans). To do a fanless system, you probably would have to go with the VIA C3 because of its low heat dissipation, and run a specially-designed fanless power supply, a moderate-speed video card, and a single quiet/cool-running hard drive. And then you'd have to mess around with parts placement to get optimum convection cooling. And even then, things would be running warmer than in a "normal" computer, so your computer's longetivity might be comprimised.

However, if you are willing to put a couple of very quiet fans in the system, suddenly you have many more options. Annuka documented his efforts at quieting his P4 computer, running a quiet CPU fan and a quiet PSU (power supply) fan. I think he said his machine is completely inaudible from six feet away. With the right heatsink, you can even cool a fast Athlon with a quiet fan.

My favorite site for this topic is Silent PC Review. They have detailed success (and failure) stories, good reviews, and a helpful forum.

Now I wish I had edited that first sentence after seeing how awkward it is.

Do you perchance work for intel or amd?

I can see this possibly happening with older athlons - especially the tbird 1.4, as they ran damn hot - but a moderate overclock on later p4s or athlon xps is pretty harmless. Though if you are forced to increase the cpu voltage, you may run into issues down the road.

I'm especially impressed with the p4 for overclocking. After the horror of the aforementioned tbird (which needed a huge double fan just to be stable without overclocking), I've been running the p4 1.6 ghz at 2.12 ghz for about 6 months now with 0 problems, on the stock fan! The stock fan is pretty quiet too... infact, to my annoyance, my harddrive is now the 'weak link' as far as noise decibels go. Lastly, the hsf attachment method for p4 is a huge improvement over the frightening amd experience, where everytime you removed the hsf there was real risk of cracking the cpu because of the massive force required.

Sure, the cpu's life is being shortened, but I picked the 1.6 up for pretty cheap anyway, and will likely upgrade to a new HT 3.0 ghz+ cpu before my current one dies.

http://www.hydrogenaudio.org/forums/index....2425#entry23368 :

Many people don't bother with rigorous tests for their overclocked systems. If they can run Q3Demo for half an hour, they assume everything's fine. I suppose I shouldn't have made such a doomsday warning about overclocking, but the benefits of overclocking aren't what they once were because processors are so fast now. But that's just my opinion on the matter, and I'm might think differently if I had a computer that could be overclocked as much as yours.

I perform 48+ test with any new OC and i have to stay that although may people say they have stable overclocks they simply don't stress enough, don't have enough uptime, and don't realise when misscalculations are taking place, because it's not always sytem critical.

I used to overclock my BP6 with daual 433 to 540 and that was 100% stable ALL of the time and never caused ay calculation errors.

With my new P4 though, i cannot overclock the FSB at all without errors occuring. I mean i ran Prime95, one of the best cpu and memory stressers, for 60 hours and then got an derror with a 1FSB increase (PCI/AGP locked to 33/66) and i also get errors with any increase thereafter. My temps, Volts etc. are all ok!

Due to this i don't overclock my CPU, but i DO run my memory at 3:4 CPU:MEM meanign that at 133FSB my memory is at 178MHz with strict timings, but as my ram and motherboard are rated for this i can run Prime 95 for weeks with no errors.

However, one can still have silence with power, and i am going to be watercooling my PC to remove the following fans:

CPU
Dual PSU
GF4
Dual Case



This will take a lot of time plannig and effort though but should be worth it in the end


Kristian

By the way, my sytem configuration is as follows:

Pentium 4 BO stepping 2.53GHz
Abit IT7 Max2
512MB single stick of Corsair 3200 DDR RAM
Western Digital Cavier 8MB 80GB Hard Disk
Lite-on 48X writer and 166s DVD
Enermax 550W PSU
Leadtek A250LE 128MB VIVO GFX
Coolermaster 210 case


If you can see anything that may hold back my colcking faliures, let me know!!!



Cheers,

Kristian

When I'm going with such things I start Motherboard Monitor and whatch closely on the temperature of CPU, HDD and case. I stress CPU with CPUBurn, it makes some calculations and stops when detects error in ones. He has different versions for different CPUs - for integer and float arithmetics both, and version for MMX arithmetic. So I believe that if he doesn't find any arithmetic error when he overheats my CPU, any encoder doesn't too, of course.
And I watch are temperature bounds acceptable - it is about 60-65 C maximal where I sure for my CPU. When not overclocked, temperature of my Athlon1500+ is about 55C when stressed. In normal working mode - I use CPUIdle, and have CPU temperature about 34C, but when I'm dully see into the display about 5 min CPU cools to 28C. It's cool!
And, I have a big cooler with a large fan but fan rotates at 3000 rpm - it is quiet.


With P4 such things are fraught...
When he feels some overheat he silently lowers his internal frequency to level when heat will be acceptable. And you can know nothing that your P4 becomes slow by halves... Oops...

How come your CPU temp is so cool. My P4 Willamate 1.4 MHz on startup will be at 48 C and directly to 49-50C at idle use, 55C at normal use, and maximum at 63C if stressed.

If I overclock it to 1.6 MHz uh oh, burning!
Idle: 58C
Normal: 66C
Stressed : 70C +

If I go to 1.75 MHz, doom
Can't boot windows at all
Something error!~

Cause I use CPUIdle. And use his "chipset optimization" option that exploits VIA chipsets' feature to totally de-energize CPU in idle.
And good cooler (Titan TTC-D5TB) with good thermopaste (Alsil). And my hands that have assembled all this sh|t together

mwahaha...I just upgraded. Now I'm running an AthlonXP 1800+ (1.53Ghz, Thoroughbred-A core) at 2200+ levels (1.81Ghz)