>: My question:
>: I know there is much fuss about video cards in Linux
>: commumity, but does Linux really benefit from them? and how ?
>: I've read that NeXTSTEP doesn't benefit from video accelator cards
>: because those cards were designed to accelerate MS Windows, but
>: NeXTSTEP uses linear frame buffer which used in workstations.
>: I was wondering how this is not true about Linux.
>: Does anybody have a clear idea about this?
>If you have a card with an accelerator which is supported by XFree86 then Linux
>does indeed benefit from an accelerated card.
Quote:>As well, a VLB card is much faster than an ISA card.
That depends. If we are talking about the different versions (vlb vs. isa)
of the same model, then yes; otherwise the statement is highly speculative
(read: over-hyped). Assume the original poster was asking xf86 performance
(any card will do fine with linux text console, after all), the GUI accelearation
is far more important than the bus speed. For a well designed GUI
accelearator, required bandwidth for running X should be much lower than
that allowed by ISA bus. I had a S3-801 based ISA card running
on a 386-40 system, and it outperforms my friend's CirrusLogic 5428 based
VLB card on a 486dx2-66 system by leap and bounds in X.
I'm not advocating ISA cards, however; heck, I'm hunting a good localbus
(vlb/pci) and motherboard combo myself; but it's not due to need for more
X performance, but for Doom, where bandwidth counts.
I'm just trying to point out that for X performance, GUI accelearator
chip is much more important than bus speed.
Quote:>Check the XFree86 docs for a list of supported accelerators. In general, the
>more expensive the card, the higher the performance. I just have a cheap
>Cirrus Logic 5428, however, and I am quite happy with its performance. It is a
>VLB card and it is accelerated as well. It is fully supported by XFree86.
You will see (pun?) what I meant in the my last paragraph if you try opaque
window movement with the CLGD5428 card. I always use opaque window move, and
I don't have much patience.