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To: Tony Viola who wrote (133190)	4/24/2001 2:38:52 PM
From: Paul Engel	Read Replies (1) \| Respond to of 186894

Tony - Re: "the Pentium 4 1.7GHz always operated at 1.7GHz and did not fall victim to any clock throttling because of heat" SCUMbria hasn't responded to your rebuttal - I wonder why? By the way - Tom Pabst did the Quake three Arena test and showed NO slowdown whatsoever on the 1.7 GHz Pentium 4. Paul

To: Tony Viola who wrote (133190)	4/24/2001 8:09:58 PM
From: Ali Chen	Respond to of 186894

"The Pentium 4 1.7GHz on-die thermal diode provided temperature readings close to that of our Athlon 1.33GHz. However, as you will know, the Athlon does not have an on-die thermistor to provide truly accurate core temperature readings but what we can conclude from this is that the Pentium 4 at 1.7GHz is running cooler than the Athlon at 1.33GHz since the latter has a nearly equivalent temperature measured outside of the core which is relatively cool compared to the on-die temperature." Says who? Anand? Tony, come on, you can do better than that, you know! Judging from the above paragraph, the kid has little clue what he is talking about. To determine whether the P4 went into the clock-throttling mode, he needs to monitor the PROCHOT# (Processor Hot) pin, located at F38. Must be very easy even at his "lab", using any VMM. The TCC ("Thermal Control Circuit") can also be activated by system software (most likely by BIOS, to be on the safe side), depending on how paranoid the particular computer designers are. Actually, suspiciously low die temperature of the Anand's CPU might be an indication that the throttling is permanently engaged...