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Amiga computer related discussion => Amiga Hardware Issues and discussion => Topic started by: Helgis75 on June 02, 2003, 03:50:21 PM
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Yes, that's right! I will overclock my forthcoming A1G3XE to 933Mhz. I don't want to risk the CPU by overclocking to 1Ghz. I happen to know that IBM had problems to push the 750FX to 1Ghz, but 933Mhz seem to be the maximum speed the FX can go without getting heater...
Interesting to see is that IBM is working on the 750GX-version of G3, starting at 1.4Ghz, with 1MB L2 Cache among other new things. Say, if you overclock the 1.4Ghz 750GX G3 CPU at twice the clock rate, then you should get speeds up to 2.8Ghz!!!!!!!!! I think so...
But for the moment, i will overclock the G3 to 933Mhz, as most people with G3-XE seem to have done..:-)
Should get my A1G3XE mobo by next week. I was told that Eyetech had delivered them out this week to Gunne...so yes, i guess...next week:-)
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Gee dude, take it easy.
High bloodpressure kills, you know ;-)
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olegil wrote:
Gee dude, take it easy.
High bloodpressure kills, you know ;-)
You're really funny, you know that? ;-)
But don't worry, i will relax:-)
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A G3 at >2GHz ?
Wouldn't that need liquid nitrogen cooling? ;-)
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A PIV at 3.06 Ghz doesn't ;-)
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No, a Picasso IV at that speed will just melt :-)
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When IBM releases the GX-variant of G3, starting at 1.4Ghz, it COULD be possible to overclock it over 2Ghz!!!!!
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Only with some serious cooling I'd guess.
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It is pretty unrealistic to think that you could overclock a processor to twice its clockspeed. If it could go that fast it would be rated at that speed.
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The clockspeed at which a CPU will run at controllable heat and 0% error is the clockspeed at which it is sold.
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Well...the 'controllable heat' part is debatable. *If* you're willing to spend a fortune on cooling equipment.
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The first thing that comes to my mind: why on earth? What will you do with those few extra mhz?
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KennyR wrote:
The clockspeed at which a CPU will run at controllable heat and 0% error is the clockspeed at which it is sold.
Thats bull.. lets take the tbred xp1700 as an example... If you overclock it to the same speed as a xp2400, it will be exactly as hot as the orginal tbred xp2400 unless you fiddle with the voltage.
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Helgis75 wrote:
When IBM releases the GX-variant of G3, starting at 1.4Ghz, it COULD be possible to overclock it over 2Ghz!!!!!
That is being a little too optimistic i think. Usually the newst model is clocked pretty near the edge of what it can do anyways.. maybe 1.5-1.6g if you are extremly lucky.....
Its easier to overclock newer models of the slower proccessors, since they are manufanctored using the same specs as the fastest models. This is the case with amd and such atleast.
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Hooligan_DCS wrote:
The first thing that comes to my mind: why on earth? What will you do with those few extra mhz?
It makes a pretty big difference with cpu intensive programs like for example video encoding and such... Though i doubt os4 will have much applications like that :-) Though it will probably crunch some more seti or dnetc :-D
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@Tomas
Yes, thats what I was thinking too... but isnt everybody left with a pc with no use but encoding video after getting AOne or Pegasos ;-)
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i wonder if the a.one board has any overclocking abilities at all? Anyone knows?
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fine, i'll just keep my G3/A1 running at the standard 800Mhz. In fact this is one of the reasons i'm so looking forwards to my board, a lean system that doesn't need a cooler the size of a house and doesn't consume as much electricity that it requires a small power plant.
I think people are underestimating the effective power of a G3!
Overclocking is soooo PeeCee :-P
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Thats bull.. lets take the tbred xp1700 as an example... If you overclock it to the same speed as a xp2400, it will be exactly as hot as the orginal tbred xp2400 unless you fiddle with the voltage.
What? That doesn't make sense. Underclock a CPU then sell it more cheaply? Now that's bull.
CPUs are tested using certain temperatures and clockspeeds during the development phase. They use statistic analysis to get the chip as fast as possible while keeping the error within defined perameters (i.e. pretty damn close to 0%). The CPU companies want the chip as fast as possible to sell as many as possible, so why would they sell it off at a low speed when it was possible to get more clocks for no performance loss? Answer is, they don't.
Boy, you overclockers are strange. Learn about the manufacturing and quality assurance of CPUs and you'll see what a stupid and unnecessary thing it is to overclock, and to invalidate a perfectly good warranty.
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What? That doesn't make sense. Underclock a CPU then sell it more cheaply? Now that's bull.
Then please explain why my Athlon 650 (classic) has an Athlon 800 core. If I remove the heatplate from it and look at the actual core it is marked K7 800.
CPUs are tested using certain temperatures and clockspeeds during the development phase. They use statistic analysis to get the chip as fast as possible while keeping the error within defined perameters (i.e. pretty damn close to 0%). The CPU companies want the chip as fast as possible to sell as many as possible, so why would they sell it off at a low speed when it was possible to get more clocks for no performance loss? Answer is, they don't.
They do. When you manufacture CPUs you always try to gain the highest yield at as high a clockspeed as possible, anything else would be stupid. When they have been manufactured each and every CPU is tested to verify at wich speed they will perform reliably (The much fabled burn-in).
It costs just as much to produce a 1.8 GHz CPU as it does to produce a 1.5 GHz. However the yields diminsh as the clockspeeds rise, so hence the higher pricing.
Also there is the small fact of product placement. They need to cater for enthusiast, mainstreem and budget CPUs. But sometimes as in the case of my Athlon the yields are so good that they end up with plenty of highspeed CPUs and nearly no lower grade ones. When that happens you would be stupid to lower the prices of the higher speed as that would kill off the budget and mainstream lines.
This is much to they joy of overclockers, as most of the times CPUs will work reliably at a lot higher speed than they were sold at. My Athlon 650 has an 800 core, but I've gotten that thing to run at 950 reliably. (But good grief does that thing generate heat? :) )
//Johan