# video memory - X

This is a discussion on video memory - X ; How can I find out how much memory is provided by a running video card? Or, how can I calculate how much video memory is needed to run at 1600x1200 resolution with color depth 24? Bob T....

1. ## video memory

How can I find out how much memory is provided by a running video card?
Or, how can I calculate how much video memory is needed to run at
1600x1200 resolution with color depth 24?

Bob T.

2. ## Re: video memory

Bob Tennent wrote:
> How can I find out how much memory is provided by a running video card?

Look in the file /var/log/XFree86.0.log (or /var/log/Xorg.0.log,
depending on which server you're running) for a line with the
word "VideoRAM" in it.

3. ## Re: video memory

On Sun, 03 Oct 2004 13:26:31 +0000, Bob Tennent wrote:

> How can I find out how much memory is provided by a running video card?
> Or, how can I calculate how much video memory is needed to run at
> 1600x1200 resolution with color depth 24?
>
> Bob T.

To calculate how much memory - 1600x1200x24/8 = 5760000 or about 6mbytes.

4. ## Re: video memory

"ray" wrote:

>On Sun, 03 Oct 2004 13:26:31 +0000, Bob Tennent wrote:
>
>> How can I find out how much memory is provided by a running video card?
>> Or, how can I calculate how much video memory is needed to run at
>> 1600x1200 resolution with color depth 24?

>
>To calculate how much memory - 1600x1200x24/8 = 5760000 or about 6mbytes.

Note, however, that virtually every X driver runs its depth 24 modes with
32 bits per pixel, so that would actually be 1600x1200x32/8 or 7,680,000
bytes.
--
- Tim Roberts, timr@probo.com
Providenza & Boekelheide, Inc.

5. ## Re: video memory

begin Tim Roberts dedi ki:
> "ray" wrote:
>>On Sun, 03 Oct 2004 13:26:31 +0000, Bob Tennent wrote:
>>
>>> How can I find out how much memory is provided by a running video card?
>>> Or, how can I calculate how much video memory is needed to run at
>>> 1600x1200 resolution with color depth 24?

>>
>>To calculate how much memory - 1600x1200x24/8 = 5760000 or about 6mbytes.

>
> Note, however, that virtually every X driver runs its depth 24 modes with
> 32 bits per pixel, so that would actually be 1600x1200x32/8 or 7,680,000
> bytes.

Also note that many drivers recommend and work much faster in color depth
16. I would suggest depth 16 by default, if there's no compelling reason.
Even then, reading driver's docs before going 24 bit depth might be a good
idea.

--
Abdullah | aramazan@ |
Ramazanoglu | myrealbox |
________________| D.0.T cöm |__