toledo_speedo

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I was screwing around with my kids PC (The Green Monster) and for kicks I bumped the CPU from 200Mhz to 240Mhz with a 1:1 Dram ratio and the CPU showed 4.08 Ghz! I played some random desktop game for an hour with the CPU running between 55-75% with no Problem on a decent aftermarket Heatsink & fan. He has a P4 3.4Ghz with a 2mb Cache, I dropped it back down to 220mhz (3.74Ghz) and left the Dram @ 1:1 to see how it works for a few hours with him playing.

Is the 3.74Ghz a good Overclock or should I try to let him run @ 4.08Ghz for awhile and see how it goes?
 

marcellis22

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Question, "he", who? You bumped what on the CPU to 240Mhz? Some random desktop game is a "STANDARDS" test where you come from? No problems are a good thing where I live. A good overclock should put a big grin on your face, go into the bathroom and look in the mirror..
 

toledo_speedo

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"He" is my Son (see the first sentence) and no I didn't test it to make sure it was stable at full load. I can't imagine a P4 running @ 4.08GHz would be stable for any length of time. I am not even sure 3.74GHz on air is very smart. I bumped up the FSB from 200MHz to 240MHz and changed the Dram multiplier from 2:1 to 1:1.
 

kyeana

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test for stability. Download and run Prime95 for roughly 12 hours, and if it gets no errors and the temps stay within reason, then yes the overclock will be stable, if not then it wont be.
 
You should run prime 95 on it to see if it's stable at that speed. Well, even if it's stable the CPU may throttle if it gets to hot so you may want to watch those temps while it goes through prime 95. You can get a P4 to run stable at that speed without throttling, but you need to have good case ventilation.
 

marcellis22

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"He is my son". "My kids computer". Yes I saw your first sentence, nothing after it made any sense. I tried reading your entire post without laughing, sorry, I had a smile when I checked my bathroom mirror...Yeah, don't throttle that P4... and take an ice pick and ram some more holes through the side of your case for better ventilation...
 

toledo_speedo

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Your avitar seems to be pretty accurate; your posts are pointless and you have your head up your ass.

I'll give prime95 a shot and see how it goes, I always thought 4+GHz was only stable on water.
 

toledo_speedo

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I knew it was too good to be true, Prime 95 quickly burst my 4.08GHz bubble and 4.0GHz as well. I must say that 3.91Ghz is stable and quite an improvement over the 3.4GHz stock speed. Not to bad for my first air cooled home built system and I am still running Ram @ 1:1.
 

kyeana

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small ffts. If it failed large ffts then it will almost defenatally fail the small ffts, but go ahead and test it.

The small ffts pretty much only tests the cpu, so it is still possible that the pc could be unstable due to the ram after the small ffts test. To check if the ram is stable run memtest 86+ for a few hours, and if you are error free then you are good to go.

Cheers
 

toledo_speedo

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Running one thread on blend test @ 4.0GHz fails after 45 minutes but is stable for 12+ hours @ 3.91GHz. I might try a better heatsink/fan/thermal paste combo and see if I can't get 4.0GHz to pass.