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Technology Stocks : Advanced Micro Devices - Moderated (AMD) -- Ignore unavailable to you. Want to Upgrade?

To: NicoV who wrote (233117)5/18/2007 5:06:32 PM
From: pgerassiRespond to of 275872
 
Dear NicoV:

According to David Kanter and confirmed by AMD, Barcelona has separate power planes for each core. Of course that requires a new socket, AM2+ and F+ fitting the bill. There are plenty of power pins to do that in each socket. Do note that socket F already has a separate set of power pins for each HT link, each memory channel, one for IO, one for the PLLs and, of course, one for the cores. That is eight already. Separating the core power into four groups isn't that hard. The leftovers will be used for the fourth HT link power plane.

One other thing to consider is that there is power used in other areas than the CPU. Beyond a point, you get diminishing returns. Watching a DVD likely would use the UVD in the GPU, so it, the DVD drive, the memory and the LCD would be in use even with the CPU halted. The biggest user of that will be the LCD and a 30% reduction in the CPU power would have little effect on overall consumption. Below a CPU usage of 1-2W, CPU savings for notebooks gain little. For low power embedded services like palmtops and hand helds, it still be significant though.

Pete



To: NicoV who wrote (233117)5/18/2007 5:44:50 PM
From: j3pflynnRespond to of 275872
 
NicoV - My suspicion is that for the majority of the market, until notebook runtime gets up to 6 or 7 hours doing whatever you want to do(besides gaming), power conservation is going to be more important than maximum performance. Now, once we get to that point, performance is going to increase in importance substantially, at which time AMD better have a response.

Right now, the chips we have on both sides do the job most people want to do with power to spare.


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