OT? power reqs of DDR2 chips

[Les]

On Tue, 2007-05-22 at 06:56 -0700, Wolfgang S. Rupprecht wrote:

> potential accesses.


Hi, Wolfgang,
1.     Power factor is the correct term.  Due to transmission line
effects the current leads the voltage, and that error produces the
heating effect that varies with directly with speed and line length.  I
am a test specialist for integrated circuits.  I do use my terms
correctly.

2.  All ram moves are block moves with recent processors.  This is due
to the management of cache memory which may be two levels deep on
current microprocessors.

3.  I believe I did state that hardware was a significant cause of power
demand.  I was illustrating the need for additional headroom on the
supply to deal with the surges that occur during electronics data state
changes.

No one here needs to believe any of this, because in most cases the
participants will order prebuilt systems which will have properly sized
supplies to deal with the board demands.  Generally the designers build
and test the systems with memory demands that are much greater than as
you point out the average demand may be.

    The gentleman here is building a high end system.  4 processors (two
CPU's) is a lot of processing power.  Thus it is reasonable to expect
that the system may be running at high capacity, thus more block moves
and greater throughput demands on the hardware.

Regards,
Les H

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