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To: kapkan4u who wrote (37635)	4/27/2001 6:10:14 PM
From: Win Smith	Read Replies (1) \| Respond to of 275872

Those prices just hit pricewatch this afternoon, along with $100 drops in the 1.7 P4 and $60 for the 1.5 P4. Also this odd listing, dated 4/27/01 7:36:13 AM CST avail 4/16/01 accepting preorders-A7M266, Socket A for Athlon/Duron,AMD 761/VIA 686B AGPset with cpu - AMD Athlon Tbird 1.4ghz 266 FSB with heatsink and fan avail 4/16/01 accepting preorders

To: kapkan4u who wrote (37635)	4/27/2001 6:36:00 PM
From: andreas_wonisch	Respond to of 275872

Kap, Re: Either 1.4GHz is coming in a week or two, or the price war is kicking in in earnest. I think the latter is the case. These must be the "surprise" price-cuts scheduled for Monday. Since the prices usually "evolve" over time, I'd expect to see the 1.33 GHz Athlon for around $170 next week or so. Andreas

To: kapkan4u who wrote (37635)	4/27/2001 8:07:41 PM
From: Petz	Read Replies (3) \| Respond to of 275872

<font color=red>NEW P4's USE MORE VOLTAGE AND POWER -- EVEN AT 1.5 GHZ Just looked at the spec sheet for P4 1.3 to 1.7 and it gives strong evidence that the new P4 stepping was designed to increase yields of 1.5 GHz P4's as well as add the 1.7 GHz. 1. The new "voltage ID" 1.75 volts is up from 1.7 volts and applies to all speed grades of P4 (Table 5, page 19, Table 33, page 72), not just the 1.7 GHz. 2. The MINIMUM operational voltage also goes up by 0.05 volts. This should allow more 1.4 GHz P4's to squeak by at 1.4 GHz and more 1.5 GHz to squeak by at 1.7 GHz. 3. The power consumption of P4's is understated by the spec sheet because a CPU with voltage ID of 1.75 volts actually has its power consumption measured at 1.665 volts. Even so, a P4-1.7 draws 83.6 WATTS -- a whopping 50.2 AMPS at 1.665 volts. A quick calculation shows that if Vcc were actually set to its "voltage ID value," like most motherboards probably implement, the DC power consumption of a P4-1.7 would equal 92.3 watts. 4. The P4-1.5 now draws 4.65% more current and disipates 5.67% more "thermal power." The 1.5 GHz now dissipates 57.8 watts compared with the old 54.7 watts. The P4-1.7 is spec'ed to dissipate 64 watts of "thermal design power." But again, if Vcc were set at the voltage ID value, power dissipation would grow to 70.9 watts. 5. The Athlon 1.33 is spec'd at 70 watts thermal dissipation maximum or 63 watts typical -- close to the Intel numbers. However, the Athlon CPU will work up to a junction temperature of 95 degC (CPU package temperature of about 90), but the P4 will not operate, or will be damaged above a CPU package temperature of 76. It takes a much bigger heatsink to keep the CPU temperature that low. 6. The maximum power supply current is 50.2 amps for P4 1.7, 45A for P4 1.5, 42.2A for P4-1.4 and 39.8A for P4-1.3. The maximum power supply current for the Athlon 1.3 GHz is actually less than the P4-1.3 at 39A. 7. For the 1.5 GHz processor I've done the calculations from the spec numbers and come up with this for the maximum Vcc (core voltage) that can be applied. In reality there is a requirement that Vcc be lowered as the current consumption increases, such that, if the CPU is drawing maximum current, the voltage must be less than 1.625 volts. The old spec said this about exceeding 1.7 volts for Vcc: The processor should not be subjected to any static Vcc and Icc combination wherein Vcc >1.6825 - 0.00128Icc. Moreover, Vcc should never exceed 1.7. Failure to adhere to this specification can shorten the processor lifetime.* 8. Now, all of a sudden 1.75 volts is OK, and the above limit is increased. Did Intel really increase the oxide thickness so that "shortening the processor lifetime" does not apply any more? Or do they figure consumers won't care? 9. Some might question whether the 1.75 volt parts are really just intended for the 1.7 GHz "limited edition" Pentium 4. The spec sheet strongly argues, "NO." Here's why: For every speed grade: 1.3, 1.4, 1.5, 1.7, the spec sheet specifies a UNIQUE Vcc_min and Vcc_max. For a 1.3 the voltage range is 1.605 - 1.75. For a 1.4, the voltage range is 1.600 - 1.75, etc. And why would Intel raise the MINIMUM voltages if there weren't something different about the new stepping that required it? Come to think of it, maybe there is really no new stepping at all. Instead, just by raising the MIN and MAX voltages, Intel gets to pull P4's out of the dumpster and reclassify other P4's to higher speeds. Petz