AC 15 graphic card testing question. a little ambiguous.?

[Anonymous]

hi to all.
sorry for my bad english, hope you'll understand.

i'm following this forum for long time and i've read a lot of threads and watched AC dream machine video tutorial because i'm going to build a new machine for my friend.
but i have to ask something to you, so i decided to register and post my question.

ok, i've seen archicad tested video cards, and i'm pleased to see gamers cards in your list.
i think i'll build a win7 machine, and i've seen that almost all cards reaches the same performances with AC15.
http://www.archicadwiki.com/VideoCardsForArchiCAD15

and that's why i'm a bit confused:

radeon 6850, 1.1 relative fps
nvidia gtx460, 1.1 relative fps.

radeon 6850, mid-range
nvidia gtx460, high-end.

why, they can run AC at the same speed?? why this difference?

thank to all will help me.


post scriptum:
are really quadros o firepros more accurate in drawings in archicad?
if not, nvidia gt220 (10x cheaper then a quadro) is the best bang for the buck card.
gt220 is also mentioned in a dream machine in graphisoft dream machine tutorial, right?

[Laszlo Nagy]

I would suppose that the reason they give the same performance is because the performance bottleneck is not the GPU. So all these cards are powerful enough for ArchiCAD.
As far as I know ArchiCAD does not require such huge GPU resources like games do.

[Anonymous]

laszlonagy wrote:
I would suppose that the reason they give the same performance is because the performance bottleneck is not the GPU. So all these cards are powerful enough for ArchiCAD.
As far as I know ArchiCAD does not require such huge GPU resources like games do.

thankyou lazlo.
ok, CPU bottleneck seem reasonable.

i'm not going to buy ultra high-end VGA for AC use, that's for sure

and can you explain why all atis are in mid-range and nvidias in high-end (except for few cards)?

is it a driver related question?
i've seen that atis card were buggy, but it was 3 years ago, and now they are "certified".
http://www.archicadwiki.com/Bugs/Tracker%20problem%20with%20ATI%20videocards

[Laszlo Nagy]

I am not sure about this mid-range high-end thing.
I consider the AMD Radeon 6850 pretty high-end, both in terms of price and performance.

[Anonymous]

laszlonagy wrote:
I am not sure about this mid-range high-end thing.
I consider the AMD Radeon 6850 pretty high-end, both in terms of price and performance.

This is exactly what i think..

I've seen that graphic hardware testing results are uploaded by GregKmethy.
I'll ask to him and i'll post the answer, maybe it will be useful for someone else

Thankyou lazlo, i apreciated your help.