On 10/05/2014 07:34 AM jwyeth.arch@xxxxxxxxx wrote:
... Ken, please provide links to prove your claims that SRAM is still
being used as opposed to asking for links for the opposition. I see
no proof that SRAM is still used at all except for in Xbox One and
CPU's L3 cache, etc. I also see that its much more expensive and when
I attempt to find a laptop using SRAM.. Imagine that, I can't. You
appear to have this process down though, so please provide some
insight.
— Sent from Mailbox
jwyeth,
I never claimed "that SRAM is still being used", though links already
provided do mention that. And I hope you'll understand why I don't feel
it's necessary to provide links for something I didn't say.
While it's okay to question or disagree with something, practicing
polemics for its own sake is quite often not beneficial to anyone. I
asked John for links because he made quite a few claims which asked for
substantiation or, at minimum, more investigation. I don't know why you
would object to that completely valid request, but at the same time am
not asking for a response on that point... or, indeed, anything in this
post. Instead, I'd only suggest that we all consider, prior to posting,
whether a disagreement or other statement is beneficial to the list as a
whole and relevant to the current thread.
Finally, as it seems you may not be aware, it would show consideration
for others if you wouldn't top-post. So, just a suggestion.
On Sun, Oct 5, 2014 at 5:57 AM, ken <gebser@xxxxxxxxxxxx> wrote:
On 10/05/2014 04:58 AM ken wrote:
On 10/05/2014 04:02 AM John R Pierce wrote:
On 10/5/2014 12:48 AM, ken wrote:
I sincerely *hope* that it isn't some kind of trend that
video cards are using shared memory instead of dedicated
memory on the card itself. All machines I've bought or built
since the late '90s have had video cards with a .5G of
dedicated memory. This is mostly because video memory is
physically different, using static RAM rather than dynamic
RAM. The former is something like ten times faster than the
latter.
NO video card uses static ram, at least not since the early
1980s.
Perhaps you're intimately familiar with each and every video
card manufactured since the early '80s except for the ones I
bought with my machines, because I've always insisted on video
cards with static RAM. Or perhaps your understanding of static
RAM is different from what I'm talking about.
the modern CPUs with integrated graphcis controllers such as
the Intel HD4500 stuff is excellent, at least on MS Windows
systems. the main memory controller on these CPUs has HUGE
bandwidth, the video display overhead is lost in the noise
unless maybe you're running dual huge screens. a dedicated
controller might be 2-3X faster or more at 3D gaming graphics,
but its not usefully faster at normal desktop graphics.
dedicated controllers use significantly more battery power than
integrated ones, a consideration on a portable laptop.
It would be nice to have authoritative sources for these
opinions.
Also, the speed of a video card is going to depend a lot on the
instruction set provided by the particular card and and then also
very much on how well the software/drivers make use of that
instruction set. Those factors are going to vary widely, which is
why I spoke only to the speed of the *memory*. So saying "a
dedicated controller might be 2-3X faster or more at 3D" is
meaningless, like saying 'a car with ABC tires might be
faster....'
Dynamic RAM actually uses *more* electricity than static RAM.
Here are some sources which support the statement above that
dynamic RAM uses more electricity than static RAM, making static
RAM more suitable for use in laptops and other situations where
power consumption is an important consideration:
<http://computer.howstuffworks.com/question452.htm>
<http://www.wisegeek.org/what-is-the-difference-between-static-ram-and-dynamic-ram.htm#didyouknowout>
<http://en.wikipedia.org/wiki/Static_random-access_memory>
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