Timothy Miller wrote:
On 7/20/06, James Richard Tyrer <[EMAIL PROTECTED]> wrote:
Timothy Miller wrote:
Yes. This isn't a problem. You just use either 128 MB or 256 MB
chips.
Only power-consumption is any reason to use fewer chips.
Doesn't DDR2 use less power. Having scanned the data sheet, I find
only three major differences:
1. Start up is a different sequence. 2. Lower voltage
(=lower power) 3. Shortest burst is 4
Sure, so perhaps it then becomes a hardware cost issue.
Power dissipation vs. cost is always an issue.
For embedded.
We should ensure OGA-based designs can use 1, 2, or 4 memory
controllers (i.e. pairs of chips), making the configurable bus
widths 32, 64, or 128 bits.
I don't think that that is needed. Even $100 boards have 128 MB of
memory and a 128 bit video memory bus.
This is more of a space and power issue for embedded. Someone might
want to put a TRV chip on their motherboard. If it's low-end enough,
they won't mind the performance hit; they just need to save power
and space.
Possibly, but ... (TM).
Wouldn't an embedded system want unified memory architecture?
If the width of the data bus is going to be configurable, we are going
to have additional issues. Probably not too difficult to deal with but
they do exist.
--
JRT
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