openCL: best replacement for ATI Radeon HD 4870?

M.Oostrik's picture

Hi all

I need to upgrade a 2009 macpro with an ATI Radeon HD 4870 so that it will be able to handle openCL.

I'm looking at either the:

  • EVGA GTX 285 Mac Edition
  • ATI Radeon HD 5770
  • ATI Radeon HD 5870

My gut feeling tells me to go with the Geforce (EVGA), but i wonder what you guys think.

Does anyone have experience with one of these cards?


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gtoledo3's picture
Re: openCL: best replacement for ATI Radeon HD 4870?

I have experience with the 5770 and 5870 with openCL. They both handle it well (like, if I do something like a grid getting deformed by perlin noise), but they seem like they are horrible in any scenario that uses image, because they don't handle GL image to CL well. I think they may not support GL image at all(?). Maybe someone that know more than me about those idiosyncratic points might be able to describe that more intelligently.

In my real world scenario, cl depth extrusion that works at 60fps from a 640x480 on the 9400 or 9600(nvidia), runs at ~2-6fps on the 5770 or 5870.

I've heard good reports of that geforce but haven't personally used it.

It sure seems like the ATI cards should be able to do that stuff well though. Maybe it will get resolved at some point.

M.Oostrik's picture
best openCL graphics card for MacPro

Thanx for the quick response!

That's 1 point in favor of the 285 (or more against the ati cards).

almost all of my patches start with an image. and waiting (for a resolve) is not my strongest point ;)

Now i only hope i can still find the card somewhere :(

By the way how does the GeForce GT 120 compare to the 285?