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To: Dan3 who wrote (20197)11/22/2000 11:16:35 AM
From: DRBESRespond to of 275872
 
re: "No wonder why pauL has been frantic lately."

Such is his "normal" state. No conclusions should be drawn.

Patient Regards,

DARBES



To: Dan3 who wrote (20197)11/22/2000 11:32:03 AM
From: AK2004Respond to of 275872
 
Dan
re:the chips became unstable
hearing that and intels statement about nuclear power in their chips makes me want to run for cover.
Regards
-Albert



To: Dan3 who wrote (20197)11/22/2000 11:51:00 AM
From: Daniel SchuhRespond to of 275872
 
This makes sense, there had to be some reason for that 1lb brick of a heatsink with the big copper substrate. So the P4 starts out its life overclocked. No wonder Dr. Tom thinks it's "cool". Can't wait to see Andrew Thomas's 2ghz unit in Jan.!

Cheers, Dan.



To: Dan3 who wrote (20197)11/22/2000 11:58:32 AM
From: PetzRead Replies (3) | Respond to of 275872
 
Yowsers, Dan! At the nominal voltage of 1.63 volts (midway between min and max voltage), the Icc is 40.6 amps at 1.4 GHz and 43 amps at 1.5 GHz. Thats a power consumption of 66 watts and 70 watts, respectively.

Intel calls that "about 50 watts" in their hype. LOL

The max thermal power is listed as 51.8 and 54.7 watts. I have no clue as to where the extra 15 watts are dissipated. Perhaps the Icc numbers are very much instantaneous peaks. Athlon shows more DC power required as input than max thermal power dissipated, but not to this extreme extent.

The 70 degC and 72 degC case temperature limits aren't quite as bad as the P3 in the sense that they are case temperature limits instead of junction temperature limits. The Tj can probably be 5 degrees higher.

However, your conclusion is valid. The P4 1.5 GHz on 0.18u has extremely little headroom, even for a 1.6 GHz part, unless Intel implements Herculean cooling technology.

Petz



To: Dan3 who wrote (20197)11/22/2000 12:26:37 PM
From: stribe30Read Replies (2) | Respond to of 275872
 
PCWorld - P4 DISAPPOINTS

PC WorldBench tests suggest you'llbe initially served every bit as well, if not better, by older Pentium IIIs and Advanced Micro Devices Athlons.

In PCWorld.com tests, the new chip barely keeps pace with the 1-GHz PIIIs used for comparison, and it even fell behind these older systems on some measures. Matched against a 1.2-GHz Athlon PC with Double Data Rate RAM, the P4 fares worse.

The clear price/performance victor among the machines tested is the $2699 Micron Millennia Max XP, the 1.2-GHz Athlon system. It won nearly every benchmark test and features a combination 12X DVD-ROM and 12X/10X/32X CD-RW drive from Ricoh. Micron says the Ricoh drive's JustLink technology
minimizes the data gaps that often make recorded CDs unusable. The unit's 31GB hard drive is the smallest here, however. All of the P4 systems use expensive RDRAM, while the micronpc.com system uses the new DDR. Micronpc.com is offering DDR upgrades for about the price of comparable PC-133 SDRAM.

Full article here:

pcworld.com



To: Dan3 who wrote (20197)11/22/2000 12:30:43 PM
From: TechieGuy-altRead Replies (3) | Respond to of 275872
 
Wow, great find! Holy cow. I can't believe that. Just 72 dec C (I'm downloading the document now to read it myself). Amazing.

[Edit: The 72 dec is the case temp- not quite the same as the die temp. I could not find the max die temp listed anywhere, but I cannot believe that the die to case drop would be as high as 23dec (95-72). Plus the 1.7 volts is the MAX voltage. Intel is guarenting that the processor will work at 1.55 volts also (vmin).]

Additionally I don't know why the Intelbees are so happy with 2GHz in Q3 next year. Q3 next year is 9 months away. 2GHz would be only a 33% performance increase (assuming linear scaling- which will not happen).

To keep with with the "Moor's Postulate (It's hardly a law!)", they need to double performance in about 18months.

That would mean that they need to be at 3Ghz (1.5 X 2) by mid 2002. That would mean that they need to increase performance by 50% from Q3 next year to mid 2002 (3GHz/2GHz).

That means that they are setting up for a tougher challenge for the 2nd part of the 18 months in which they have to double performance.

Intel should be shit worried.

I've always had this lurking suspicion (see some of my earlier posts), that the P4 at 1.5GHz is already a bit into its "original" headroom. The P4 was originally targeted to debut at 1.1/1.2 GHz. Let's see any of the Intelbees deny that!

TG

>>The P4 1.4 and 1.5 must be cooled to 70 and 72 C to stay within spec. Voltage is already at 1.7