Split some graphics cards depending on bus

[Artikbot]

Good evening,


I've been working lately with some old AGP graphics cards, to see how well do I fare in a completely CPU bottleneck free platform, and where the processor clocks aren't as important as in other platforms.

Well, to my surprise, when submitting scores some of the cards I work with don't discrimine between 64 or 128bit bus widths.

On newer PCI Express cards this doesn't pose that much of a threat, but on AGP that memory bus width can (and does) affect performance quite a lot.

For instance, take this FX5200 submission I made:

http://www.hwbot.org/submission/2264...200_7228_marks

I ran the card to the clocks that gave me the best performance (305/500 - 250 DDR).

Now look at, for instance, this submission here:

http://www.hwbot.org/submission/8860...200_9711_marks

He gets more than 2000 points more, while running at remarkably lower clocks.


The only difference between our cards is the bus. He has a 128bit-wide bus while I run a 64-bit narrow bus.

What I mean is, there is no contest for 64bit card users if there are 128 bit versions, because with little effort, a 128 bit card can easily score a 30% more points than a 64bit one overclocked to hell and beyond.



Thanks for your understanding!

[Turrican]

yeah, we always split the buses. but without pointing it out like you did we wouldn't have known it.
i'll look at it the next days.

[Artikbot]

Thanks a lot!

By the way, excellent results you got there on the AGP cards! I look at them with a telescope of how high they are xD