Radeon vs FireGL vs Quadro vs GeForce

[lambchops511]

Right now I am writing a custom application (utilizng OpenGL 2.0)

Specifically I am only using PBO and Textures .

There won't be any complex calculations

The app is basically: Move data from ram to PBO to texture to frame buffer

However, the texture and pbo sizes are quite large (1920x1080) and i need to produce extremely high rates ( 120...later on 240 )


which type of video card do u recommend?

I am noticing quite a performance (~2x) difference between Quadro FX 1500 PCIE and ATI Radeo 1650XT AGP . Could this be because of the bus? or the card?

 

[Munky]

The bus will limit your performance if you're transfering large amounts of data from system ram to the video card.

 

[lambchops511]

i need a sustained transfer rate of 750MB/s (unidirectional)

shouldnt AGP be good enough for that?

 

[Munky]

AGP 4x and up would allow that. Note, however, that the performance also depends on how you code and how well the driver is optimized for cpu->gpu transfer.

 

[lambchops511]

my code bypasses the CPU

its DMAed directly from memory to vram (thats why i said i was using PBO)

so u think the performance difference is the card? or the bus?

 

[MercenaryForHire]

A little of both IMO.

Given the sustained bandwidth you're requesting, PCIe should give a bit more overhead.

Also, I'm probably going to get flamed for this, but nVidia's OpenGL implementation always seemed to have been a little more on the ball than ATI's. That's just my personal experience.

- M4H

 

[40sTheme]

Originally posted by: MercenaryForHire
A little of both IMO.

Given the sustained bandwidth you're requesting, PCIe should give a bit more overhead.

Also, I'm probably going to get flamed for this, but nVidia's OpenGL implementation always seemed to have been a little more on the ball than ATI's. That's just my personal experience.

- M4H

No, you're not in the wrong there, nVidia consistently outperforms ATi in OpenGL applications.

 

[Gamingphreek]

As for which card....any of them will be fine. The Quadro's and FireGL's really big main difference (outside of various optimizations) is line-anti-aliasing. Therefore any of them will be fine.

-Kevin

 

[CP5670]

I would think that the gamer cards will be faster here if they're all on PCIE. Most of them have less but faster memory than the equivalent professional ones.

 

[blckgrffn]

Well, the FX1500 is also a simply a beefier card than the ATI one, hands down.

Probably on the order of twice as fast.

Nat

 

[lambchops511]

hmmmmm

do u think the professional cards will be better?

i dont have any antialiasing going on . however, (believe it or not) the NVIDIA OpenGL 2.0 implementation of PBOs are bugged . after a certain size with rgb textures it crashes . ati works fine

i am leaning towards a FireGL card . do u think it'll be better than the Radeon card?

memory bandwidth means nothing to me . since almost no data is stored on the vram . it is almost direct dma from ram to framebuffer

 

[lambchops511]

also . i perfer a single slot solution

 

[lambchops511]

i just ran my test on a x1950xtx

it produced the exact same rates as the x1650pro

the quadro card is MUCH faster

do professional cards make that much of a difference?