Athlon XP: 30% COOLER than P4???

[vicwang]

I was checking out data on CPU thermal characteristics over at Sandpile.org, and I'm wondering if this info is accurate...

When you compare the Athlon XP at 1.67 ghz (2000+) to the Socket 478 Pentium 4 2 ghz (non-Northwood), here's the data on the two:

Athlon XP 2000+
62.5 W Typical Power
70.0 W Maximum Power

Pentium 4 2 ghz
75.3 W Typical Power
100.45 W Maximum Power

Unfortunately the site doesn't define their terminology or reveal where they obtained the data... But if it's anywhere NEAR accurate, it would seem that Athlon XP's produce far LESS heat than comparable (non-Northwood) P4's. Which, of course, would be completely contrary to the public perception of the two CPU's.

Can anyone back this up?

 

[SmackdownHotel]

Both my Athlon XP 1800+ system and my P4 Northwoodie @ 2166 run at similar load temps (high 40s). The difference though is that the XP is using a huge 7000RPM HSF while the P4 is still using the rinky dink stock fan.

 

[ST4RCUTTER]

Both my Athlon XP 1800+ system and my P4 Northwoodie @ 2166 run at similar load temps (high 40s). The difference though is that the XP is using a huge 7000RPM HSF while the P4 is still using the rinky dink stock fan.

You also have to realize that you're comparing a chip on a .13um process to one that's still on .18um. That said, the P4 has more surface area to dissipate heat so it should run cooler.

 

[SmackdownHotel]

I realize it was like comparing apples to oranges, I was merely giving him some real worlld experience rather than quoting numbers from a spec sheet.

 

[vicwang]

Thanks for the info. What I'd really like to know is the differences in cooling requirements between Athlon XP's and comparable non-Northwood P4's... Since the P4 has almost double the die surface area of the Athlon XP, does that mean it is easier to cool P4's despite outputting more total heat? And is it even correct that non-Northwood P4's output significantly more heat than Athlon XP's, as the data seems to suggest?

 

[Mikewarrior2]

SmackdownHotel,

Not to mention taht the AMD reading is socket-thermistor, while the p4 reading is probably internal diode....



Mike

 

[Aragorn992]

<< Since the P4 has almost double the die surface area of the Athlon XP, does that mean it is easier to cool P4's despite outputting more total heat? >>



In a word, yes. Intel purposely inflated the core size of the P4 to alleviate the problems with the 0.13 process (the problems being reduced core size).