To: tejek who wrote (136340 ) 4/16/2001 1:46:12 AM From: richard surckla Read Replies (1) | Respond to of 1584067 tejek... What's up with this? What's up with this? Athlon-Pentium 4 fans overheat, then overclock....theinquirer.net Athlon-Pentium 4 fans overheat, then overclock Huge water cooler or maybe liquid nitrogen needed as tempers fray By Mike Magee, 15 April 2001 11.45 BST AN UNSEEMLY ROW has broken out over on Ace's Hardware Forum following an article posted by Bert McComas, co-founder of market research company InQuest. The piece has generated so much heat on Ace's that we reckon it could give Vesuvius points for noxious sulphurous emanations, heat, and rocks flying in all directions. We referred to that article on our site a couple of days back, - and you can find our account of it here. The thread, which starts at this point, poses the question whether Intel has lied about power dissipation on its Pentium 4 platform. The first post points to an allegation in McComas' article that Intel uses "clock throttling" (we've heard that phrase before somewhere) which limits the Pentium 4's performance if the chip gets too hot, effectively reducing, for example, its clock speed from say 1.5GHz to half of that. That led to accusations that Bert McComas, and Van Smith, who works for InQuest too, are involved in a campaign to rubbish the Pentium 4 and the Rambus platform, with the next poster saying: "Lemme ask again-- who pays van smith and bert mccomas for this stuff? Why is it seemingly quoted around the web like it was unbiased benchmarking? These guys ain't Consumers Report--they are paid guns. Why are they doing this? Why have they been doing it for 3-4 years?." After this point, the discussions fork into two main streams - one where Van Smith denies this poster's response that McComas is in any way a "paid gun", and another, more technical stream, discussing whether the facts of the allegations are true. The attacks in the first fork become ever more personal and we can leave them there. [Are you sure, Mike? Personal attacks are always much more interesting than technical arguments - Ed.] The technical discussions become more interesting for those interested in heat, that is, with engineers and others piling in with their views about the heat generated by Pentium 4s and Athlons respectively. The heat generated by the different views refuses to be throttled, however, with people taking time out from feeding their Easter Bunnies to chip in their views on thermal management and clock throttling. So what does it all mean? This post by sw, yesterday, kind of sums it up: "This is what the article says: "If performance critical applications drive CPU power above its artificially low 54.7 watt limit, the CPU is halted with a 50% duty cycle (alternating 2 microseconds on; 2 microseconds off) until it cools down. This effectively turns your 1.5GHz processor into a 750MHz processor - just at the moment you demand peak performance." This particular poster concludes that, as it stands, all that statement does is generate fear, uncertainty and doubt and he claims that McComas clearly has an agenda. Unfortunately, as this is the season of good will towards all men [wrong season, Mike. Do this once more and you're fired, Ed], neither Intel nor AMD could be contacted to either fan the flames or cool the heat. µ