So I'm told . . .

[cmangle]

The Prescott CPU's (Intel P4 775 pin HT) run quite hot, and as a result are somewhat unstable !

What would happen if you UNDERCLOCKED them ?

Would the HT (HyperThread) aspect still function ?

Would this reduce the high operating temperature ?

Considering that I'm upgrading from a 200 mhz Pentium MMX, would I really care (notice) that I'm running a Prescott 2.8 ghz at, say, 2.4 ghz ?

That would be a 14% drop in CPU speed. Could I be so unmathematical(naive)in thinking that would be a 14% drop in operating temperature ?

That would make a 100w consumption CPU a 86 watt consumption CPU ?

I know I'm blowing smoke up my own dress here, but the question I have still remains,

"If I underclocked the CPU would that reduce operating temperature ?"

 

[pat]

You dont have to underclock them...they do that automatically. Would you mind to pay for a 2.8 cpu and running at 2.4??? why not buy a 2.4 instead?? Common...that ridiculous. Better buy an AM64 or a P4 Northwood..but stay away from prescott...

Would you buy a car with a V8 engine to unplug 4 sparkplugs wire to run it on 4 because V8 takes more gas than 4???


LOL...wow. You should think better about that, read about cpu and you'll have your answer.

Sorry to have laught a bit, but...well..

-Always put the blame on you first, then on the hardware !!!

 

[Ned_Flanders]

A*

______________
OK it's your choice:
You can have the boat, or you can have the Mystery Box!
...Hey wait a minute! A boat's a boat, but a Mystery Box could be anything. It could even be a boat

 

[ChipDeath]

somewhat unstable !

They're not unstable as such, as they throttle themselves down as necessary.

What would happen if you UNDERCLOCKED them ?

They would run slower :tongue: . Unless you reduced their voltage too, there would be very little reduction in temperature anyway (Vcore matters much more than clockspeed when it comes to temps)

Would the HT (HyperThread) aspect still function ?

Yes.

Would this reduce the high operating temperature ?

Yes, but it'll only throttle down until it's <i>just</i> under the 'trigger' temperature, and that's still <i>far</i> too high IMO.

Considering that I'm upgrading from a 200 mhz Pentium MMX, would I really care (notice) that I'm running a Prescott 2.8 ghz at, say, 2.4 ghz ?

If you do the sensible option and buy an A64 instead, you'll not give a rat's A$$. Anything new will be so mind-bogglingly faster than that, you'll be too busy being happy to care anyway.

Could I be so unmathematical(naive)in thinking that would be a 14% drop in operating temperature ?

Would be Nowhere near that. See earlier comments re. Voltage & throttling.

Just stay away from Prescotts. If you're a misguided fool who hates AMD because they killed your family or something, then buy a northwood instead. They're good chips (but still not as good as an A64).

---
"Sex without love is an empty experience...
But as empty experiences go, it's one of the best" - Woody Allen

 

[Starfishy]

Take everyone's advice and buy an AMD... they are the obvious choice for gamers.

 

[Logicsequence]

From a previous thread and post of mine:

Sockett 775 Chips are great IF YOU COOL THEM WELL. Make sure to get an aftermarket cooler, i'm using the Zalman CNPS7700 and getting great temperatures, esp if you don't plan to OC, or aren't going to OC to the extreme.

You'll hear often that the LGA775 prescott's put off alot off heat, and they do, but they are well managed with a good cooling system. So if you can afford that, don't rule it out just because of heat.

Also, the LGA775 system is not as fragile as has been first reported in the computer world. I read an article where one site replaced the CPU over 200 times with no problems. And i personally fuddled the pins accidentally when installing a temperature monitor under the CPU, and there weren't any problems. No bent pins or anything. I wouldn't recommend trying that tho .
NOTE: i got an expensive High-end motherboard from Asus tho, so i don't doubt that it may be sturdier than others. :/

ONE NOTE OF CAUTION: MAKE SURE YOU GET AN E0 STEPPING PENTIUM 4 PRESCOTT, if you decide to go LGA775. They handle the heat much better. They are noted by having the letter J after the number, I.E. Pentium 4 550J.

I can't speak for AMD chips tho, you'll have to ask some of the other guys here for more info on those. But i have been happy with my LGA775 system.

 

[endyen]

Just so you know, most of the heat from prescotts does not come from operating the "switches" The prescott has a huge problem with IR losses, or leakage current. Underclocking would not affect this very much. Scince you are only getting a 2.8, a northwood 2.8 would make a lot more sence. They run cooler, and perform better.
It is strange that the Intel 90 nano process caused heat in excess of 100 watts, while Amd 90 nano chips use ~ 50 watts, and perform better.

 

[Crashman]

Underclocking them makes no sense: The Northwood outperforms the Prescott, clock for clock, and produces much less heat. So if you were to buy a 2.8E and underclock it to, say, 2.4, it would still produce more heat than a 2.8C, and be much slower.

If you're just trying to move to PCI-Express with an Intel chipset, there are Socket 478 boards based on the 915 for PCIe.

<font color=blue>Only a place as big as the internet could be home to a hero as big as Crashman!</font color=blue>
<font color=red>Only a place as big as the internet could be home to an ego as large as Crashman's!</font color=red>

 

[cmangle]

thanks all for your input and advice