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To: peter_luc who wrote (72908)	3/1/2002 9:41:12 PM
From: TGPTNDR	Respond to of 275872

Peter, re: <May Clawhammer really consume 70W at 1.2 GHz???> Sure, why not? At this point anything is possible. This is very early stage stuff designed to run. That's all they want it to do. That it actually boots an operating system is all to the good. There's plenty of time to get it to run fast & reliably. After that comes the electricity usage. That heat sink is pretty big -- but who knows at what temperature it's running? For right now, there's little but question marks. tgpntdr

To: peter_luc who wrote (72908)	3/1/2002 10:47:35 PM
From: eCo	Respond to of 275872

Peter:May Clawhammer really consume 70W at 1.2 GHz??? I saw that discussion and interpreted it differently. He said the "motherboard is designed with 40A max at 1.7V" - not the cpu. The motherboard would reasonably have some headroom there, so the cpu should come in well under that. eCo

To: peter_luc who wrote (72908)	3/2/2002 12:58:19 AM
From: Dan3	Respond to of 275872

Re: Does this sound credible? May Clawhammer really consume 70W at 1.2 GHz??? Well, the number sounds a little fishy. For one thing, will .13 SOI voltage be as high as 1.7? Maybe they step it down on board for the CPU. Motherboard specs aren't usually seen much, but the motherboard also powers the CPU fan, up to 3 case fans, the memory, the PCI expansion slots, and the AGP slot. AGP Pro slots, alone, can demand 50 watts and more. Add in 2 to 3 watts for each fan powered off the motherboard, and power for the PCI slots and memory, and there's no available power remaining. So that must be a spec for what the motherboard's supposed to deliver to the CPU. Max power for a motherboard indicates what the highest power demanding chip will require for the the market life of that version of the motherboard. If hammer is coming out at 3400+, then the motherboard has to support at least that. The most pessimistic view would be that the first generation of Hammer will ship at, say 2800+ to 3400+ so that 3400+ would be all the mother board needs to support. The optimistic view is that Hammer will come out at 3400+ and quickly ramp to something like 3600+ then 3800+. But 70 watts must then support, at least, a 3400+. That's probably something between 333MHZ FSB times 6.5 for a nominal speed of 2.17GHZ to 333 times 8.5 for 2.83GHZ nominal speed. With the on die DDR memory controller delivering the benefit of memory latency levels formerly seen only in SRAM L3 caches, it those nominal speeds should deliver terrific performance.