[CentOS] Centos laptop:: video cards

[jwyeth.arch at gmail.com]

... 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.

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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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