[CentOS] Centos laptop:: video cards

[ken]

On 10/05/2014 07:34 AM jwyeth.arch at gmail.com 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 at mousecar.com> 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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