AMD or Intel

FUGGER

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The 2.4C is a great overclocker, some breaching 4Ghz with phase change cooling.

Macci got his up to 4.2Ghz

<b>"Granted I dont own a P4. But I read enough stuff and waste enough time on forums newsgroups IRC and computer news sites that I proberly know more then if I DID own a P4." -vk2amv</b>
 

svol

Champion
I hope you mean a peltier element in combination with watercooling... peltiers aren't coolers but just heat pumps. And they generate way to much heat to be used with aircooling on CPUs.

If you want info about peltiers ask me... I did a graduation project about them for physics.

My CPU fan spins so fast that it creates a wormhole :eek:
 

svol

Champion
Well that is what most people say... but then the peltier isn't the cooler (that is the waterblock/heatsink on the hot side) it is the heatpump.

My CPU fan spins so fast that it creates a wormhole :eek:
 

svol

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Well I would say twice the amount of watt the CPU can put out... so around the 160W. And yes you definently need a seperate PSU for it that supplies the specific voltage needed for the peltier you use. So if you have a 15V peltier supply it with 15V, not more, not less.

My CPU fan spins so fast that it creates a wormhole :eek:
 

gobeavers

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sorry, this is a bit late, but in response to "If you want info about peltiers ask me"... We are going to cool an intel 2.4 ghz with an 800 fsb. At Danger Den they have 169 watt and 226 watt peltiers for the same price. What does that mean excactly? Which one should we buy? Also, it says
Vmax = 16.4 Volts
Delta Tmax = 69 (C)
so we need a 16.4 volt power supply right? do we need a specific peltier power supply because the one on danger den is over 115 dollars and if we could use a regular power supply it would be cheaper. And what does Delta Tmax = 69 (C) mean? Sorry about all the questions, I am new to this kind of cooling.
 

pIII_Man

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delta tmax means the max differential in temperatures between the hot side of the plate and the cool side ex 39c hot plate -30c cold plate...this only holds true if the cold side is under NO load...so really the number you want to look at is the watts of the peltier...although most can supply a 69c delta T only the powerful TECs can achieve close to this under load from a cpu. I would also recomend a decently "robust" watercooling setup. I have heard of people running their TECs from a good quallity PS...for most pelts it is fine. You just need to do some creative soldering so that the pelt turns on at the same time as the computer.
 

svol

Champion
The 169W is the Qmax, which is the max amount of heat the peltier can transport from the cold to the hot side.
The Vmax is the maximum efficience voltage... at this voltage you get the max cooling heat pumping power.
DeltaTmax is as said the temp difference between the hot and cold side when Q(heat)=0, and you run at Vmax and Imax.

Yes you want a 16.4V or around the 16V (as long as it isn't higher then 16.4V) PSU. Any stable PSU can do as long as the voltage doesn't go over the 16.4V limit... so not a PSU that does rectify AC to DC... It has to be a clean DC line.

Oh and don't forget that you need plenty of isolation around, inside the socket and at the back of the mobo.

Oh and het the 226W one if they're the same price (unless a PSU for the 226W would be much more expensive) as it will give the best cooling power.

I love my Delta 60HP 7000 RPM fan that puts out more dB then CFM :eek:
 

FDTzeng

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Wait wait go back to the chip discussion. Im fairly sure teh Intel has teh potential to perform better (like with a ABIT IS7) than the 2500+ and an A7N8X rev2.0. The problem is the Intel solution is more money... is that worth it?

Athlon XP 2500+ @ 2225MHz (12.5x178 @1.850v), Volcano 7 w/Smart Fan2, A7N8X Standard Rev. 1.06, Kingston HyperX PC3000 512MB @177MHz, Radeon 9700Pro, SB Live 5.1
 

phsstpok

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Add up the cost of a whole system, case, power supply, memory, drives and yet the main cost difference comes down to just the difference in CPU prices. (Remember the IS7 and the A7N8X ver 2 aren't priced that differently and the A7N8X deluxe ver 2 costs a little more than the IS7). With prices of about $175 USD for P4 2.4 800 Mhz and XP2500+ at about $90 USD that's only a difference of $85 or so out of the total system cost, $85 out of say $700 or more.

Is all that overclocking potential of the P4 2.4 800 Mhz worth $85? I think so.

<b>56K, slow and steady does not win the race on internet!</b>
 

FDTzeng

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while $85 is only a fraction of the $700, its still $85... Also when you say that the only cost difference is in the CPU prices, what about the memory costs? For a 2500+ you would want DDR400 since thats about as much as you can hope for, but on a P4 system would some DDR433 or DDR466 be in order? That adds the cost too... but then again these new P4s outdo anything from AMD...

Athlon XP 2500+ @ 2225MHz (12.5x178 @1.850v), Volcano 7 w/Smart Fan2, A7N8X Standard Rev. 1.06, Kingston HyperX PC3000 512MB @177MHz, Radeon 9700Pro, SB Live 5.1
 

phsstpok

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Sorry, didn't mean to start yet another AMD vs Intel flame war but as longtime AMD user I am finally seeing the futility in these arguments.

I was looking at best reasonable cost but nForce2 rev 2.0 seems capable of going beyond 200 Mhz FSB so why not use faster memory than DDR400.

On the flip side, If you want to take a P4 2.4C toward 4 Ghz you can't run the memory synchronous anyway. You're just not going to find memory that can keep up. At 3.6 Ghz you are already at 300 Mhz FSB. Where are you going to find DDR600?

So take your pick which memory you want/can afford, DDR466, DDR400, whatever...

$85 still seems trivial. I remember the days I couldn't afford a $400 1-ghz P3. I settled for a $70 Duron 600 which I overclocked to 1007 Mhz.

Then it made sense go AMD. (I didn't know about the problems of early VIA chipsets). Today it's a different story.

<b>56K, slow and steady does not win the race on internet!</b>